Friday, December 10, 2010

Dr. M.A.K. Mian is presenting a paper at the International Seminar on Climate and Environmental Challenges of 21th Century held at the University of Rajshahi during 7-9 December 2010. The title of the paper was " Phenological development, growth and yield of lentil genotypes under prevailing temperature at varying sowing time". BARI Mosur 3 showed the best yield performance at 25 November sowing. Optimum growing day degree was 1849 for the higest yield.

Wednesday, November 10, 2010

Recent Research Thrust Addressing Climate Change and how far Agronomists can do?



Recent Research Thrust Addressing Climate Change and how far Agronomists can do?

Dr. Md. Abul Khayer Mian

Agronomy Division, Regional Agricultural Research Station

Bangladesh Agricultural Research Institute, Ishurdi 6620, Pabna

Bangladesh

Introduction

Agronomists are working to meet the challenges of food and nutritional security of the country. Now, it is imperative to change traditional agronomic research and new domain of agronomic research is to be addressed as the changing climate. However, they are devoted to develop demand based technology for sustainable crop production. They are trying to provide solutions of the problems at changing climatic conditions. Consequently, recent agronomic research has addressed new domain and succeeded to some extent.

New research domain and success

1. Screening and adaptation of crop varieties/lines and development of sustainable production technology for costal area.

BRRI Dhan 47 is a salinity tolerant rice variety recommended for boro season. It can tolerant salinity level up to 8 dS/m (Abedin, 2010). Mungbean line (BM-1), barley line (BHL-15), soybean (Shohag and BARI Soybean 5) were found moderately salt tolerant (up to 8 dS/m) (Aziz, 2010a). The potato lines, 86-140 (18.33 t/ha) & 88-163 (18.06 t/ha) and the varieties, Heera (18.61 t/ha), Chamok (18.33 t/ha), Multa (18.06 t/ha), Colombus (18.06 t/ha), Sirinda (19.17 t/ha) & TPS-1 (18.61 t/ha) can be grown suitably at costal area (salinity level from 3.31 to 6.14 m mhos/cm from November to March) (Mian et al. 2005). Green manuring, use of organic materials, ridge-bed planting, mulching, deep ploughing etc. are the agronomic options for management of salinity. Gypsum and silicon application can ameliorate salinity stress in rice and other crops (Kader and Islam, 2010). Salt tolerant crops like cowpea, maize, barley, soybean, sweet potato, sweet gourd etc. should be grown at costal area.

2. Screening of different crop genotypes for drought tolerance and development of technology for drought management.

Mungbean line (BMX 90009-6, BMX 01015 and BMX 01007) (Mian et al. 2010a) and wheat line (BAW 923, BAW 923-4, BAW 923/ BAW 824 and BAW 1138) (Aziz, 2010b) showed moderately drought tolerance. Organic matter, green manuring, mulching, dense plant population, weeds as smothering where the growth of weed is minimum, supplemental irrigation from harvested rain (if possible) etc. are to be used for drought management. Drought tolerant crops like maize, barley, sweet potato, sesame, sorghum, millet, pigeon pea, groundnut should be chosen for drought prone areas.

3. Screening of different crop genotypes for heat tolerance and adjustment of sowing/planting time for avoidance heat stress.

Some wheat varieties (BARI Gom 20, BARI Gom 24, BARI Gom 25 and BARI Gom 26) proved to be moderately tolerant to high temperature (Aziz, 2010b ; Mian and Islam, 2010b). BARI Seam 3, BARI Tomato 3, BARI Tomato 4, BARI hybrid Tomato 3, BARI hybrid Tomato 4, BARI Piaz 2 and BARI Piaz 3 were tolerant to high temperature in summer season (Aziz, 2010b). Optimum sowing (10-15 November) of wheat can avoid heat stress during grain filling stage (Mian and Islam, 2010b).

4. Screening of different crop genotypes for excess soil moisture or water logging tolerance and development of management options for excess soil moisture.

Sesame line (BD 6980, BD 6985, BD 6992 and BD 7010) were identified as water logging tolerant at vegetative stage (Saha, 2010). Mungbean genotype (VC 3960-88 and BARI Mung 4) had tolerance ability of flooding at 21 days old seedling (Pervin et al., 2010).

5. Development of charland through adaptation of improved crop varieties and production technologies.

About 0.83 million ha charland are available in the country (Aziz, 2009). BARI Chola 4, BARI Soybean 5, BARI Mung 6, BARI Til 4, BARI Sarisha 11 and BARI Sarisha 14, BARI Hybrid maize 7 and BARI motorshuti 2 performed better at charland (Aziz, 2010b; Mian, 2010c). BARI badam 5 and BARI badam 6 can be grown successfully at charland (Mian 2010c). There remains greater scope for increasing crop production in the country through adaptation of improved crop varieties and technologies at charland.

6. Improvement of cropping system of hilly areas.

After harvest of T.aman rice BARI Sarisha11, BARI Hybrid Maize 5, BARI Chola 5, BARI Mosur 4, Shatabdi, Sourav and Bijoy of wheat, BARI Hybrid Maize 5 + Bushbean and BARI Hybrid Maize 5 + BARI Falon 1 intercropping were found suitable for increasing production and cropping intensity in hilly areas (Aziz, 2010c). BARI Mung 5 performed better after harvest of mustard against T.aman –fallow-fallow pattern (Aziz, 2010c). More attention is needed for adoption of improved crop varieties and cropping system at hilly areas.

7. Improvement of cropping system of haor areas.

In coordinated research of CNRS (Centre for Natural Resources study) revealed that two crops could be grown in haor areas. BARI Sarisha 11, BARI Sarisha 14, BARI Gom 22, BARI Gom 23, BARI Gom 24, BAR Motorshuti 2, BARI Mung 5, BARI Mung 6 performed better in haor areas (Aziz, 2010b). BARI mung 5 and BARI mung 6 would be grown after rabi crops. There remains scope to cultivate broadcast/transplanted deep water rice after harvest of boro rice (Mian 2010d). There needs to improve the cropping system at low lands using Rhyda or other improved deep water rice. More research thrust should be given in improving the cropping intensity and as well as the cropping system of low lands.

8. Adaptation of submerse rice variety at flood prone areas.

Submergence tolerant gene SUB1 is identified and transferred to 5 mega rice varieties i.e. Swarna, samba mahsuri, IR 64, CR 1009 and BR 11. These 5 mega varieties are widely cultivated by the farmers because of their high yield and good grain quality. However, these varieties were susceptible to flash flood and they could not tolerate more than 4 days of submergence. Now, these SUB 1 gene varieties can tolerate submergence 14-17 days (Singh et al., 2010). IR 64 sub1, Sarna sub1 and Samba sub1 showed submergence tolerant in North-western region of Bangladesh (Mridha, 2010). The adaptability test is going at farmers’ field of different location by BRRI.

9. Development of technology for cyclone prone areas.

The maize variety Pacific 11, Pacific 984 and BARI Hybrid maize 5 were found suitable for cultivation in costal cyclone prone area after harvest of T.aman rice (Aziz, 2010a and Mian, 2008). More research is needed for adaptation of improved production technologies at cyclone prone areas.

10. Development of agro-climatological model for crop yield at changing climate.

“Enso effect on rice production in Bangladesh” was studied by Biswas et al. (2010). Regression equation expressed that 1 0C rising at July, August and September SSTA decrease 2.947%, 3.210% and 2.544% yield respectively. New research approach is taken to quantify the effect of climatic factors like temperature, rainfall, day length etc. on crop yield (Mian, 2010). “Effect of temperature and rainfall on summer mungbean”, and “Development of yield model of wheat under late sown irrigated condition” are taken as considering climate change (Mian, 2010e). Research programme on “Effect of temperature on phenological development, growth and yield of lentil” is going on. Agro-climatological model is the tool that can explain the influences of climatological factors on the crop yield and associated performance. The agronomist should give recent research thrust on agro-climatological modeling.

Conclusion

The Agronomists should give research thrust in aforesaid new domain of agronomic research more effectively than at present cope with changing climate. So, they should acquire sufficient knowledge about the relevant field of research for better contribution for the nation. They need capacity building through advanced agronomic research regarding climate change. They should have sufficient physical facility and financial support for need based research for solving the present problems. Our government and relevant authority should have consider the matter very seriously.


References

Aziz A. 2009. Training course on environmental stress tolerant crop production technology development for scientists and NGO officers. Agron. Div. Bangladesh Agril. Res. Ints. Joydebpur, Gazipur 1701.p.1.

Aziz A. 2010a. Salt tolerant mechanisms and development of salt tolerant variety/ technology of different crops for costal area of Bangladesh. . Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 4.

Aziz A. 2010b. Climate change and environmental stress research for sustainable crop production in the problem areas of Bangladesh. Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 4-5.

Aziz A. 2010c. Climate change and hill agriculture: Rural livelihood improvement. Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 5.

Abedin M Z. 2010. Climate change and impact on agriculture and food security in Bangladesh. Inter. Confer. Bangladesh Soci. Agron. 2010. Souvenir. pp.29-36.

Biswas J K, D Dawe, P M V Casal and M S H Bhuiyan. 2010. Enso effects on rice production in Bangladesh. Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 40-41.

Kader M A and N Islam. 2010. Improving salinity tolerance in crop plants: How far agronomy can go. Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 2.

Mian M A K, K U Ahmmad, M H Hossain and M A Hossain. 2005. Screening of potato genotypes for salinity tolerance. Bangldesh J. Bot. 34 (2):129-130.

Mian M A K. 2008. Ph.D. Dissertation. Dept. of Agronomy, BAU Mymensingh. pp. 36-145.

Mian M A K, M R Islam and Aziz A. 2010a. Screening of mungbean genotypes for drought tolerance. Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 1

Mian M A K and M R Islam. 2010b. Performance of wheat varieties under late sown condition. Res. Report Agron. Div., Regional Agril. Res. Station, Ishurdi 6620. pp. 1-2.

Mian M A K and M R Islam. 2010c. Adaptation of BARI released crop varieties at charland. Regional Res. Report Agron. Div., Regional Agril. Res. Station, Ishurdi 6620. p. 5.

Mian M A K. 2010d. Improving cropping intensity at low lands. (http://makhayermian.blogspot.com/).

Mian M A K and M R Islam. 2010e. Development of yield model of wheat under late sown irrigated condition. Res. Programme (2010-2011). Agron. Div. Bangladesh Agril. Res. Institute. Gazipur 1701.

Mridha A J, K M Iftekharuddaula, M A Mazid, M S Zahan and I A Bari. 2010. Submergence tolerance rice varieties and their management options for north-western regional of Bangladesh. Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 31.

Pervin T, M R Islam, A Hamid, M M Hoque and J U Uddin. 2010. Soil flooding tolerance in mungbean under field conditions. Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 23.

Saha R R, B Ahamed, A Aziz and M A Hossain. 2010. Screening of sesame genotypes to water logging tolerance. Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 4.

Singh U S, M A Bari, H D Monzoor, A Ismail and D J Mackill. Adaptation to climate change: Flood tolerance rice for enhancing and stabilizing rice productivity in south Asia. Inter. Confer. Bangladesh Soci. Agron. 2010. Abstracts. p. 44.

Possibility of improving cropping intensity at low lands



Possibility of improving cropping intensity at low lands

Dr. Md. Abul Khayer Mian
Agronomy Division, Regional Agricultural Research Station
Bangladesh Agricultural Research
Institute, Ishurdi 6620, Pabna, Bangladesh

At present the cropping intensity of the country is about 176% (BBS, 2008). Horizontal increasing of production is not possible due to limited cultivable land area of the country. Now, it is imperative to go with the vertical increasing of production. This is possible only by increasing cropping intensity. Multiple cropping is the way to increasing cropping intensity. Agronomist/Agronomic research can play key role for improving the cropping intensity of the country. Bangladesh occupies 2791228 ha low lands (25.29%) including medium low land and very low land (BBS, 2008). Improvement of cropping intensity at low land is very hard task. Farmers grow there only boro rice. After the harvest of boro rice the land remains fallow. Research findings indicates that short durated mustard varieties (BARI sarisha 9 and BARI sarisha 14) can be grown successfully at medium low lands before boro rice. But in the low lands and some of very low lands, farmers grow there only boro rice. But recently, the farmers practice to grow broadcast aman rice after harvesting of boro rice at low lands in Faridpur and some other parts of the country (Practical experienced of the author). Rhyda (local deepwater rice) can be grown with boro rice in mixture. After the harvest of boro rice, rhyda gets opportunity to full growth and heavy tillering, ultimately covers the field. Deep water rice is photosensitive and yielded about 2.25-3.0 t/ha (www.banglapedia.org.httpdocs/HT/D_00096.HTM) There remains scope for rice breeder to develop high yielding variety of deep water rice. Deep water rice can also be grown with aus rice as intercropping. After harvest of aus rice deep water rice covers the field by good growth and tillering. In coordinated research of CNRS (Centre for natural resource study) revealed that two crops could be grown in haor areas. BARI Sarisha 11, BARI Sarisha 14, BARI Gom 22, BARI Gom 23, BARI Gom 24, BAR Motorshuti 2, BARI Mung 5, BARI Mung 6 performed better in haor areas (Aziz, 2010). BARI mung 5 and BARI mung 6 can be grown after harvest of rabi crops in Syllet haor area. More research thrust should be given for increasing cropping intensity and cropping system at low land.
References

1. BBS, 2008. Statistical Year Book of Bangladesh. Bangladesh Bureau of Statistics. PP. 11-122.
2. Aziz A. 2010. Climate change and environmental stress research for sustainable crop
production in the problem areas of Bangladesh. Inter. Confer. Bangladesh Soci. Agron. 2010.
Abstracts. p. 4-5.
3. Deep water rice. (www.banglapedia.org.httpdocs/HT/D_ 0096.HTM.)

Wednesday, October 27, 2010

Abstract of Ph.D. Thesis of Dr. Md. Abul Khayer Mian

ABSTRACT
Four experiments were carried out at the Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Jessore in two consecutive years of 2004-2005 and 2005-2006 to evaluate the agro-economic performance of several maize oriented cropping patterns under different nutrient management. Maize-Mungbean (green manurng, GM)-T.aman rice was found to be the best cropping pattern under high nutrient level of 266-46-132-28-2.10-0.60 kg ha-1 of N-P-K-S-Zn-B for maize and 100-13-43-6.0-0.70 kg ha-1 of N-P-K-S-Zn for rice and moderate nutrient level of 186-34-95-20-1.60-0.60 kg ha-1 of N-P-K-S-Zn-B for maize and 74-11-33-4.5-0.40 kg ha-1 of N-P-K-S-Zn for rice showing better growth behaviour, yield performance, productivity, land use efficiency, production efficiency and profitability as compared to the existing cropping pattern of Wheat-Fallow-T.aman rice. This pattern rendered 89% higher maize equivalent yield (MEY) than the existing pattern. Furthermore, Maize-Dhaincha (GM)-T.aman rice and Maize-Soybean (GM)-T.aman rice proved to be better cropping patterns in respect of the aforesaid parameters under high and moderate nutrient levels. Maize-Mungbean (GM)-T.aman rice, Maize-Dhaincha (GM)-T.aman rice and Maize-soybean (GM)-T.aman rice patterns produced higher grain yield of maize (9.91-10.39 t ha-1 ) and rice (5.22-5.90 t ha-1) in high nutrient level due to improvement of yield components. Inclusion of mungbean (GM i.e. brown manuring) in the sequence provided an extra remuneration with seed yield of 530-1056 kg ha-1. Maize+ Sweet potato, Maize+ Soybean and Maize+ Cowpea were found to be suitable intercropping representing higher productivity (10.92-11.99 t ha-1 of MEY) and monetary advantage in high and moderate nutrient levels. Maize showed better yield performance (9.07-10.34 t ha-1) in intercropping with legumes (soybean, blackgram and cowpea). Maize+ Sweet potato-Mungbean (GM)-T.aman rice, Maize+ Soybean-Mungbean (GM)-T.aman rice and Maize+ Sweet potato-Dhaincha (GM)-T.aman rice under high nutrient level and Maize+ Sweet potato-Mungbean (GM)-T.aman rice under moderate nutrient level emerged as further improvement of Maize-Mungbean (GM)-T.aman rice cropping pattern. There existed better relationship of grain yields with growth parameters and yield components of maize and rice in maize oriented cropping patterns and intercropping under different nutrient levels. Dry matter partitioning into reproductive organ at later growth stages was higher in higher nutrient levels contributing to increased grain yield of maize and rice. Grain yield as well as system yield response to nutrients applied in maize and rice were significant representing variable coefficient of determination. Contributions from GM in the sequence and incorporation of legume residues from intercropping towards nutrient balance in the soil were found to be positive. Balance of P and S was more favourable than that of N, K and Zn in the soil. Inclusion of GM or incorporation of legume residues in the system improved organic matter content of the soil. Nutrient returned to soil from GM or legume residues was correlated with the nutrient balance in soil indicating improvement of soil health. Among the GM crops, mungbean ranked first in respect of nutrient concentration in plant tissue and nutrients returned to soil. It is concluded that Maize-Mungbean (GM)-T.aman rice or Maize+ Intercrops (sweet potato or soybean)-Mungbean (GM)-T.aman rice cropping patterns would be more productive and profitable technology for future crop production in Bangladesh.

Tuesday, October 26, 2010

Dr. M.A.K. Mian is discussing with BTV along with his collegues

BTV personells have visited the RARS of BARI and made Videos on research activities of the station on 23.10.2010. They discussed with the scientists and CSO (head of the station) gave briefing through multimeda presentation. Then they videoded the Plant Pathology Laboratory and ICT room and activities. Afterwards they went to the research field. They videoded the Blackgram filed and Papaya field incliding other research activities of the station. Major activities and success of RARS is suppled to them in printed form. Breeding division developed heat tolerant wheat varieties named BARI Goam 25 and BARI Goam 26. Horticulture division developed BARI Potol 1, BARI Potol 2 and BARI Batabilau 1. Agronomy division found MBX 90009-6, BMX 01007 and BMX 01015 lines for drought tolerance. Mukhekachu+Mungbean and Pionted gourd +red Amarenth/Spinach+Ginger/turmaric intercropping are profitable technologies. They also worked on charland development. BARI mosur 6, BARI Sarisha 11 and BARI Sarisha 14 are suitable for growing at the charland. Soil Science division developed nutrient management packages for sustainable production in Wheat-Mungbean-T.aman rice and Mustard-Mungbean-T.aman rice. Entomology and Plant Pathology divisions wroked on pest management. PGRC collects, characterizes and conserves genetic resources.

Dr. M.A.K Mian is with his collegues of BARI in a papaya field.

Dr. M.A.K Mian is with his collegues of BARI in a papaya field.
Papaya is a very good friut. It also can be used as vegetable. It contains Vitamin A in rippening condition. It contains Pepsin enzyme which is very important for human digestion. Papaya is used as liver tonic. It is usefull to remove constipation of man. It is a proverb that take a papaya everday and keeps the doctors away. A papaya plant can bears about 10-20 papaya or more in a seasons or year. A farmer can get Tk. 600.00/(20x30=600.00) per plant in annum easily. Two-three plants of a famer house can fullfil the demands of the family. Moreober, he can sell some portion and can earns money. There needs no more management in papaya. Fafmers can grow 4-5 plants easily at the sourrounding of the house. Boron deficiency sometimes desafed the fruits and leaves and also the stem. So the farmers should add 1-2 g boric acid per adult plant. The news will be broadcast through BTV channel of National Assembly at off time.

Monday, October 25, 2010

Dr. M.A.K. Mian is with BTV anong with his collegues

Dr. M.A.K. Mian is with BTV along with his collegues of Bagladesh Agricultural Research Institute, Ishurdi, Pabna on 23.10.2010. He is talking about significance of blackgram cultivation and its problems in farmers' field of Bangladesh. Dr. Jalal Uddin (CSO) is talking about varietal improvement of Blackgram. The crop can be grown sucessfully in charland area and it has grater significance to increse pusle production in Bangladesh and utilization of fallow land at char area. Desssimination of this technology is urgent need for charland development. DAE personells and researchers should work together for dessimination of technology.

Thursday, October 21, 2010

Abstract of Conference Papers

Abstract of Conference Papers


Abstract-1


Crop weed competition in groundnut (Arachis hypogaea L.)


Twentieth Bangladesh Science Confereence, Bangladesh Association for the Advancement of Science (BAAS) 1998 (November 28-30).14(1):6


M. A. K. Mian

Agronomy Division, Regional Agricultural Research Station, BARI, Jessore-7400, Bangladesh.


Agronomy Division, Regional Agricultural Research Station, BARI, Jessore-7400, Bangladesh.
A field experiment was conducted at the Regional Agricultural Research Station, Ishurdi during February to July of 1996 to observe the critical period of weed competition on yield of groundnut. Groundnut variety “DM-1” was tested in a RCB design with three replications. The 11 weeding treatments were: continuous weed free, weed free upto 15 DAE, upto 30 DAE, upto 45 DAE, upto 60 DAE, weed free after 15 DAE, after 30 DAE, after 45 DAE, after 60 DAE, no weeding and earthing up only. The crop was sown in flat method at 25 cm × 15 cm spacing on 19 February. Nutrients @ 50-90-40-20-4 kg/ha of N-P2O5-K2O-S-Zn were applied. Weeding was done by indigenous hand weeding just after collecting the weed samples by quadrate method. Dry matter weight of weed and yield of groundnut was recorded. The results indicated that critical period of weed competition was 15 DAE to 45 DAE in groundnut in the early kharif season. The yield loss due to weed competition was about 89%.






Abstract-2


Use of nitrogen and weed control in mustard


Twentieth Bangladesh Science Confereence, Bangladesh Association for the Advancement of Science (BAAS) 1998 (November 28-30).20(1):9


M. A. K. Mian


Agronomy Division, Regional Agricultural Research Station, BARI, Jessore-7400, Bangladesh.

A 2-year field trial was conducted at Regional Agricultural Research Station, Ishurdi having Calcareous Grey Floodplain Soils during the rabi seasons of 1994-95 and 1995-96 to find out the suitable dose of N with weed control for obtaining higher yield of mustard. In a split plot design, five N doses viz. 0, 60, 90, 120 and 150 kg/ha was assigned in the main plots and weeding viz. weed free upto 0, 15, 25, 35, and 45 days after emergence (DAE) of crop in the sub-plots. A high yielding variety of mustard ‘Sonali Shorisha’ was line-sown at 25 cm apart with a seed rate of 8 Kg/ha at irrigated condition. Nitrogen, weeding and interaction between them had significant effect on the yield and yield attributes of mustard. The results indicated that weed free upto 35 DAE with 120 kg/ha N produced 78.6% higher yield (2150 kg/ha) over the control treatment.




Abstract-3


Some aspects of agronomic management for higher yield of chickpea at barind tract

Annual Bangladesh Botanical Conference 2001 of Bangladesh Botanical Society. 58.

M. A. K. mian, M. A. Matin, M. A. Aziz and M. N. Islam

RARS, Ishurdi, Pabna, Bangladesh


Two field experiments were conducted an Saroil, Farming System Research (FSR) site of Bangladesh Agricultural Research Institute in Barind Trace to observe the performance of chickpea under different management practices. In one experiment, five planting methods for chickpea were broadcast (T1), line sowing (T2), dibbling (T3), dibbling and mulching (T4) and line sowing and mulching (T5). The experiment was laid out in a RCB design with four replications and plot size of 5 m × 4 m. Among the above treatments, T5 produced the highest seed yield (1398 kg/ha) which was closely related to T2 (1365 kg/ha). These two treatments also rendered the maximum dry matter weight of chickpea. In another experiment, three soil moisture regime viz. no irrigation (I0), irrigation at 80% depletion of available soil moisture (ASM) (I1) and irrigation at 60% depletion of ASM (I2) were studied for chickpea. The experiment was laid out in a split plot design with four replications and plot size of 5 m × 4 m. The treatment, I2 gave the highest seed yield (1623 Kg/ha) contributed by the highest yield components. Similar trend of yield and yield components was followed by the treatment I1 where I1 and I2 were identical.




Abstract-4




Screening of potato genotypes for salinity tolerance

Annual Bangladesh Conference 2003 of Bangladesh Botanical Society.72.

M.A.K. Mian, K.U Ahmed and M.H. Hossain
RARS, BARI, Jessore, Bangladesh

Thirty four potato genotypes were evaluated in the farmers field at Shahos (Dumuria), Khulna during rabi of 2002-2003. The unit plot was 30.0 m × 2.4 m with maintaining plant spacing of 60 cm × 25 cm (non replicated). The planting was done on 12 December 2002. Fertilizers were applied @ 160-105-150 kg/ha of N-P2O5-K2O respectively (as per recommendation of Tuber Crop Research Centre, 2003). Full dose of P2O5, N and K2O were applied as basal. The remaining N and K2O were incorporated at 35 days after planting. Plant protection and other intercultural operations were done as and when necessary. Salinity ranged from 3.31 to 6.14 m mhos/cm from November to March at the experimental field. The experimental was harvested on 21 March 2003. Most of the genotypes performed well. The tuber yield ranged from 8.89 t/ha (line 98-420) to 19.17 t/ha (Sirinda) with an average of 15.43 t/ha. The yield was produced more than 15.00 t/ha by 23 genotypes and more than 18.00 t/ha by 8 genotypes. The high yielder genotypes were the lines, 86-140 (18.33 t/ha) & 88-163 (18.06 t/ha) and the varieties Heera (18.61 t/ha), Chamok (18.33 t/ha), Multa (18.06 t/ha), Colombus (18.06 t/ha), Sirinda (1917 t/ha) & TPS-1 (18.61 t/ha). The highest yield was mainly contributed by the higher number of tuber per hill. The results revealed that potato might be commercially cultivated in the coastal area.





Abstract-5




Screening of mungbean genotypes for drought tolerance

Annual Botanical Conferance 2009 of Bangladesh Botanical Society (Janury 9-10):32


M.A.K. mian
RARS- Ishurdi, Pabna, Bangladesh Agricultural Research Institute,


A screening trial of mungbean varieties/lines for drought tolerance was conducted at Regional Agricultural Research Station, Ishurdi, Pabna. Eighteen varieties/lines were screened in pot culture under controlled condition. The rainfall was controlled by polythene tunnel. Pots were filled with soil and manure mixture including fertilizers. Sowing was done on 8 April 2009. Five mungbean seeds of each varieties/lines were placed in the individual pot with three replications. The pots were watered for ensuring germination of seeds. After germination, no water was applied. Pots were kept weed fiee till harvest. Total dry matter (TDM) of mungbean and soil moisture was recorded at 35 days after sowing. Soil moisture level ranged from 6.21-9.03% among the pots. Collected TDM of mungbean was subjected to statistical analyses. The TDM showed significant variation among the varieties/lines. BMX 01008, BMX 01013, BMX 01014 and BMX 01015 showed more tolerant (TDM of 0.390-0.420 g/plant) to drought and BARI mung 3, BU mung 1, BU mung 4, BINA mung 5 and BMX 01007 showed moderately tolerant (TDM of 0.247-0.337 g/plant) on the basis of dry matter production and physical field observation. BARI mung 5 and BARI mung 6 produced the lowest TDM yield.


Abstract-6


Weed growth in transplanted aman rice ecosystem as affected by cultivar


Annual Botanical Conference 2009 of Bangladesh Botanical Society (Janury 9-10):37


M.A.K. mian and M. A. Samad
RARS Ishurdi and Dept. of Agromony, Bangladesh Agricultural University

Mymensingh-2202, Bangladesh.


An ecological study of weed was undertaken to know the type of weed species as well as nature of weed vegetation in T.aman rice ecosystem as affected by cultivars and also to observe the relationship between weed growth and grain yield of rice. The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University. Mymensingh. Four cultivars viz. BR 11, BR 22, Nizersail and Biroi were taken into the investigation under RCB design with four replications. Weed samples were collected at 20 and 55 days after transplanting by quadrat (1.00 m × 1.00 m) method. Eight weed species belonging to six families were observed in the experimental plots. Grass type included the Paspalum scrobiculatum L. and Echinochloa colonum L. of Gramineae whereas sedge included Fimbristylis littoralis (L.) Vahl. and Cyperus iria L. of Cyperaceae. The broadleaf type comprised with Alisma plantago L., Jussieua decurrens (Walt.) DC., Polygomm orientale L. and Sphenoclea zeylaica Gaertn. of the family Alismacae, Onagraceae, Polygonaceae and Sphenocleaceae respectively. Among them, Paspalum scrobiculatum L. was the most dominating species in respect of summed dominance ratio (SDR of 41.71) and relative dry weight (RDW of 60.18%). All weed species except A. plantago L. and J. decurrens (walt.) DC were found dominant in semi-dwarf modern cultivars (BR 11 and BR 22) than in traditional tall cultivars (Nizersail and Biroi). The highest co-efficient of similarity was rendered by BR 11 versus BR 22 (91.22%), similarly by Nizersail versus Biroi (90.22%). All the cultivars demonstrated a positive relationship (r= 0.71 at p<0.01)between>



Abstract-7

Screening of mungbeangenotypes for drought tolerance
International Conferance of Bangladesh Society of Agronomy 2010 (October 6-7):1

M.A.K. Mian, M.R. Islam, 2M.S. Alam and 1M.A. Aziz

RARS-Ishurdi and BARI-Joydebpur



The experiment was conducted at the Regional Agricultural Research Station of Bangladesh Agricultural Research Institute, Ishurdi, Pabna during early kharif season of 2009 to select suitable mungbean genotype for drought tolerance. The experiment was laid out in a RCB design with three replications. Eighteen genotypes of mungbean were screened for drought tolerance. The genotypes were sown on 24 March 2009 and harvested on different times (55-65 DAE) according to maturity. Pre sowing irrigation was applied for ensuring seed germination afterward the crop was subjected to drought. The same genotypes were grown in normal condition where two irrigations applied at 15 and 30 DAE for calculation drought indices. The results revealed that lines, BMX 01007, BMX 01015 and MBX90009-6 performed better for drought tolerance in respect of relative yield (71.37-73.35%), stress tolerance index (0.76-0.80) and stress susceptibility index (0.77-0.82). Relative water content of leaf was also higher (93.33-96.55% at 27 DAE and 83.61-87.11% at 33 DAE) in those lines and it was positively correlated with the seed yield (r=0.33-0.46 at p=0.05). The selected lines, BMX 01007, BMX 01015 and MBX90009-6 produced better seed of 1112, 1123 and 1159 kg/ha respectively.



Abstract-8


Spacing and nitrogen-phosphorus requirement of dwarf pigeonpea for rainfed cultivation



International Conferance of Bangladesh Society of Agronomy 2010(October 6-7):2

M.S. Alam, M.A. Islam and M.A.K. Mian
PRC & RARS, Ishurdi, Bangladesh



The experiment was conducted at the Pulses Research Centre, Ishurdi, Pabna during the growing season of 2008-2009 to find out the optimum spicing and nitrogen-phosphorus (NP) level for higher yield of pegionpea in rainfed condition. The experiment comprised of four spacing viz. 20 cm × 15 cm (S1), 20 cm × 20 cm (S2), 30 cm × 20 cm (S3) and 40 cm ×20 cm (S4) and four nutrient levels viz. 0-0 kg/ha of N-P (L1) 20-25 kg/ha of N-P (L2), 30-35 kg/ha of N-P (L3) and 40-55 kg/ha of N-P (L4). The experiment was laid out in a split-plot design assigning spacing in the main plot and nutrient level in the sub plot. The crop was sown on 5 October 2008 and harvested on 24 March 2009. The highest branches/plant (6.54) and pods/plant (54.44) were observed in 40 cm × 20 cm (S4) but the highest seed yield (1212-1237 kg/ha) was obtained from 20 cm × 15 cm (S1)cm and 20 cm × 20 cm (S2). Seed yield (1333 kg/ha) and yield components were the highest in 40-45 kg/ha of N-P (L4). In interaction, spacing of 20 cm × 15 cm (S1) and 20 cm × 20 cm (S2) with 40-45 kg/ha of N-P (L4) produced the highest seed (1419-1440 kg/ha) mainly attributed by the higher plant population and 1000-seed weight.














Monday, October 18, 2010

Paper Presentation-2

Dr. M. A. K. Mian is presenting a paper entitled " Spacing and Nitrogen-Phosphorus requirement of dwarf pigenpia for rainfed cultivation" at the International Conference of Bangladesh Society of Agronomy 2010 at BARC, Farmgate, Dhaka, Bangladesh. Plant spacing 20 cm x 20 cm with 30-45 kg/ha of N-P is suitable for dwarf pigeonpea cultivation under rainfed condition.

Paper Presentation-1

Dr. M. A. K. Mian is presenting a paper entitled " Screening of mungbean genotypes for drought tolerance" at the International Conferance of Bangladesh Society of Agronomy 2010 at BARC, Farmgate, Dhaka, Bangladesh. BMX01007, BMX01015 and BMX90009-6 were drought tolerent genotypes producing yield of 1112, 1123 and 1159 kg/ha respectively.

Abstracts of Publications in the Journals

Abstracts of Publications in the Journals
Abstract-1:
Effects of foliar application of nitrogen fertilizer on grain yield of wheat
Thai J. Agric. Sci. 29 (July 1996): 323-328

M.N. Islam, R.K. Paul, T.M.K. Anwar and M.A.K. Mian.
Regional Agricultural Research Station
Ishurdi-6620, Pabna, Bnagladesh
A 2- year field experiment showed that application of ½ N as basal and ½ N as foliar spray at growth stage 3 increased grain yield of wheat by 43.2% compared to the obtained by applying full N (100 kg N/ha) as basal (normal practice). Foliar spray without starter N reduced the yield by 14.9% (1710.5kg/ha) compared to normal practice. Foliar application of ½ N at growth stage 3 along with ½ N as basal was found to be profitable in terms of gross margin ($ 401.05) and benefit cost ratio (3.60); this treatment gave additional income of $160.02/ha.

Abstract-2:

Mixedcropping lentil with linseed at different seeding rates
Thai J. Agric. Sci. 29 (October 1996): 527-530

M.N. Islam, R.K. Paul, M.S. Borhan, M.O. Ali and M.A.K. Mian
Agronomy Division, Regional Agricultural Research Station
Ishurdi 6620, Pabna, Bangladesh
Different combinations (100:33 and 75:50) of lentil (Lens culinaris Medik) and linseed (Linum usitatissimum L.) were compared to corresponding monocrop in an experiment. This highest seed yield (1.01 t/ha) was obtained from sole lentil followed by the ratio of lentil: linseed = 100:33. The highest land equivalent ratio (LER), gross return, gross margin and benefit cost ratio were obtained from the mentioned ratio of lentil and linseed.

Abstract-3:

Suitability of intercropping flue-cured tobacco (Nicotiana tabacum) with lentil (Lens culinaris)
Indian Journal of Agricultural Sciences 67 (6): 256-8, June 1997

MN Islan, MAK Mian, RK Paul and MO Ali
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Ishurdi 6620. Bangladesh
In a 2-year field experiment, tobacco (Nicotiana tabacum L.) was intercropped with lentil (Lens culinaris Medikus). Significantly highest yields of cured tobacco leaf (1970 kg/ha) and lentil (980 kg/ha) were obtained from the pure stand. Among intercropping treatments, tobacco paired row+50% lentil gave the highest land-equivalent ratio (1.49), tobacco-equivalent yield (2109kg/ha), net return (Rs 52864/ha), monetary advantage (Rs 20804/ha ) and benefit: cost ratio (6:08).


Abstract-4:
Intercropping Cigarette Tobacco with Chickpea
Bangladesh J. Sci. Ind. Res. 32(3) 1997

M.N. Islam, R.K. Paul and M.A.K. Mian
Agrinomy Division, Regional Agricultural Research Station
Iswardi-6620, Pabna, Bangladesh

A field experiment was conducted at Iswardi for two consecutive years to find out the rows of chickpea to be intercropped profitably within the interspace of two set of paired row tobacco. Paired row tobacco+4 row chickpea produced yield of 1871 kg/ha of tobacco and 1202 kg/ha of chickpea in 1993-94 and 1845 kg/ha of tobacco and 1282 kg/ha of chickpea in 1994-95. This combination produced average advantages of 53% in yield and $ 859 per ha in return over sole cropping. The highest tobacco equivalent yield (2479 kg/ha), benefit cost ratio (8.98) and replacement value of intercropping (1.45) were also recorded in the same treatment.


Abstract-5:
Intercropping Papaya (Carica papaya L.) with mungbean (Vigna radiata (L) Wilezek)
Ann. Bangladesh Agric. 7(2): 89-93, 1997

M.N. Islam, M.A.K. Mian, R.K. Paul, R. Rabbani and Md. Amin.
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Ishurdi 6620 and IPSA, Gazipur. Bangladesh

A field experiment was conducted at BARI Regional Station, Ishurdi for two consecutive years to find out the optimum number of rows of mungbean that could be intercropped within papaya rows for higher profitability. Among five intercropping combinations, papaya + 6 rows of mungbean produced maxiumum papaya equivalent yield (100,623 kg/ha) and the highest land equivalent ratio (1.91). The same combination also produced the highest net return (US$ 12,720/ha), benefit cost ratio (8.29), replacement value of intercropping (1.19) and monetary advantage (US$ 6,892/ha).

Abstract-6:

Effect of stem pruning and spacing on the growth and yield of tomato
Bangladesh Hort., 25(1&2):41-46, 1997

M.R. Uddin, M.A. Hossain, M.A.K. Mian, M.Z. Uddin, M.H. Reza and A.K.M. Mahtabuddin
Regional Agricultural Research Station, Jessore-7400

The effect of pruning (one stem, two stem, three stem and no pruning) and plant spacing (40 and 50 cm) on the yield was evaluated on indeterminate type F1 hybrid tomato variety FMTT22 at ARC-AVRDC experimental field of Kasetsart University. Kamphaeng Saen campus, Thailand from October 1995 to February 1996. Tow stem pruning yielded the highest (56.20 t/ha). Closer spacing (40 cm) gave higher yield (55.34 t/ha). Two stem pruning along with 40 cm plant spacing showed superior interaction.


Abstract-7:

Yield of sesame as affected by sowing dates and variety
Bangladesh J. Agril. Res. 23(4):641-646, December 1998

M.A. Aziz, M.A. Khyar (M.A.K.Mian), A.B.M. Abul Khyar and M.A. Ahad Miah
Bangladesh Agricultural Research Institue, Gazipur 1701 and Ishurdi 6620

A field trial was conducted with three varieties of sesame and six dates of planting at Ishurdi. Yield and yield attributes were significantly affected by sowing dates and cultivars. Significantly the highest seed yield (1130 kg/ha) was obtained from 15 March sowing due to higher number of pods per plant, seeds per pod and individual seed weight which was identical to 1 March sowing (1095 kg/ha). Among the cultivars, T-6 produced highest yield (1140 kg/ha) but it did not differ significantly form that of Jamalpur. Compared to the sowing date of 15 March, other dates of sowing reduced yield by 0.03 to 85.86%. The first fortnight of March was found to be the optimum time of sowing. The cultivar T-6 performed best followed by Jamalpur.

Abstract-8:
Effects of irrigation and nitrogen on the yield of barley in high ganges river floodplain soil
Bangladesh J. Agril. Res. 26(1):47-51, March 2001

M.A.K. Mian, M.N. Islam and A. Matin
Regional Agricultural Research Station, Ishurdi 6620 and Bangladesh Agricultural Research Institue, Gazipur 1701

A 2-year field trial with barley (Hordeum vulgare L.) was conducted at Regional Agricultural Research Station, Ishurdi during 1996-97 and 1997-98. One irrigation at crown root initiation (CRI) stage accompanied by 80 kg/ha nitrogen produced the highest grain yield. The control treatment with no irrigation and no nitrogen gave the poorest yield. The higher yield was associated with increased number of ears/m2, grains/ear and increased 1000-grain weight.


Abstract-9:
Effect of row orientation and weed control method on the yield and yield components of mustard
Bangladesh J. Agril. Res. 26(1):137-145, March 2001

M.A.K. Mian, M.A. Khaleque and M.M. Rahman
Regional Agricultural Research Station, Jessore

The experiment was conducted to find out the effect of row orientation (E-W, N-S and bidirection) and weed control methods (hand, mechanical, pre and post emergence weedicide and control) on weed growth, yield and economics of mustard at Regional Agricultural Research Station, Jessore for two consecutive growing seasons 1997-98 and 1998-99. Among the major identified weed species, Cyperus rotundus L. was the most dominant one (79%). Dry matter of weed was found minimum (63 g/m2 at 20 DAE and 61 g/m2 at harvest) in bidirection and maximum (72 g/m2 at 20 DAE and 88 g/m2 at harvest) in north-south row direction. Per-emergence “Ronstar” (@ 2 L/ha) application rendered less (35 g/m2) weed growth at early growth stage i.e. 20 DAE) and hand weeding at 20 DAE gave minimum (27 g/m2) weed growth at later growth stage (i.e. harvest) of the crop. North-south row direction gave significantly highest yield 1286 kg/ha) than other two directions. Hand weeding at 20 DAE, mechanical weeding by BARI-weeder at 20 DAE and pre-emergence “Ronstar” application produced 21% and 18% higher yield over control treatment. These three weed control methods gave the highest yield (1428, 1402 and 1397 kg/ha) in north-south row direction compared to other treatment combinations. But from economic point of view, mechanical weeding by BARI-weeder at 20 DAE and per-emergence “Ronstar” application in north-south row direction were found superior in respect of higher net return (Tk 13543 and 13438/ha) and BCR of 2.16 and 2.15, respectively.

Abstract-10:
Weed infestation and performance of mustard as affected by type of plough and number of ploughing
J. Asiat. Soc. Bangladesh, Sci. 27(2): 189-194, December 2001

M.A.K. Mian, M.N. Islam and B.C. Kundu
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Jessore and Hathazari, Bangladesh

An investigation was carried out to assess the effect of type plough and number of ploughing on weed infestation and performance of mustard (Brassica campestris) in Calcareous Gray Floodplain soil of Bangladesh at Regional Agricultural Research Station, Ishurdi for 2 consecutive seasons of 1995-96 and 1996-97. BARI plough with 6 ploughing rendered less weed infestation (393.0 m-2) and produced maximum weed dry weight (99.7 g m-2). BARI plough produced 15% more yield over country plough while the highest yield was observed in 6 ploughing. BARI plough was found superior at 4 ploughing in respect of higher gross margin (Tk 8431/ha) and benefit cost ratio (1.97).

Abstract-11:

Fertilizer management in hybrid maize with soybean intercropping system under irrigated condition
Online journal of biological sciences 1(9):812-814, 2001

Saha, R.R., M.A. Quayyum, S. Alom, P.C. Sarker, A. Khayer (M.A.K.Mian)
and A. F.M.F. Rahman
Agronomy Division, Bangladesh Agricultural Research Institute, Gazipur,
Regional Agricultural Research Station, Jessore and Hathazari, Bangladesh

A field experiment was conducted to find out a suitable dose of fertilizer for hybrid maize (var. Pacific 11) intercropping with soybean (var. Sohag), two planting system and four fertilizer levels were used as treatment variables. Highest grain yield of maize was obtained from the highest does of fertilizer. But soybean yield was the highest in lower doses of fertilizer at Jessore and Hathazari but at Joydebpur 250-120-120-40-5 of N, P2O5, K2O, S, Zn Kg ha-1. Yield attributes increased with the increase of fertilizer in case of maize but reverse in soybean. From economic point of view, the highest benefit cost ratio was obtained from the fertilizer dose 250-120-120-40-5 of N, P2O5, K2O, S, Zn Kg ha-1 in both normal and paired row systems at Joydebpur of Bangladesh. But at Jessore and Hathazari fertilizer dose 200-80-80-20-5 of N, P2O5, K2O, S, Zn Kg ha-1 was found profitable.

Abstract-12:

Effect of potato leaf roll virus and potato virus y infected seed tubers on the growth and yield of potato
Bangladesh J. Agril. Res. 26(3):351-356. September 2001

M.H. Hossain, A. M. Akanda, M.A.K. Mian and I.H. Mian
Regional Agricultural Research Station, Jessore and BSMRAU,Gazipur

Healthy, PLRV and PVY infected second generation seed tubvers of four potato varieties, namely Ailsa, Binella, Cardinal and Diamant were planted in the field. Under natural conditions, appearance of visible symptoms of PLRV and PVY infection was significantly delayed in all the varieties. Both the viruses caused significant reduction in plant height, number of fubers per plant, tuber size and yield per plant over control (healthy seed). The reduction in plant growth, tuber yield and tuber size was significantly higher due to PVY infected seed tubers as compared to PLRV infected seeds. The percentage of marketable size tubers (28-55 mm) was maximum in healthy seed tubers which was followed by PLRV and PVY infected seeds.

Abstract-13:

Performance of four potato cultivars as affected by different levels of concentration of potato virus Y
Bangladesh J. Agril. Res. 26(4): 573-578, December 2001

M.H. Hossain, A.M. Akanda, M.K.A. Bhuiyan, M.A.K. Mian
Regional Agricultural Research Station, Jessore and BSMRAU,Gazipur


Healthy and PVY infected second generation seed tubers of four potato cultivars, namely Ailsa, Binella, Cardinal, and Diamant were planted in the experiment field. The effect of three different levels of concentration of PVY on growth, yield components, and yield were studied on four potato cultivars. The results indicated that PVY at different levels of concentration reduced plant growth and yield associated with yield components of four potato cultivars. The increasing levels of concentration PVY showed the higher trends of reduction in growth, yield and yield components.


Abstract-14:

Growth, yield and economics of hybrid maize as affected by rate and time of nitrogen application
Bangladesh J. Agril. Res. 27(1): 41-46, March 2002

M.A.K. Mian, A. Ahmed and A. Matin
Regional Agricultural Research Station, Jessore

A two-year field experiment with hybrid maize conducted at Regional Agricultural Research Station, Jessore showed that 350 kg/ha of nitrogen when applied 1/3 as basal + 1/3 at 35 DAE + 1/3 at 60 DAE was found optimum for higher grain yield (10.62 t/ha) and higher number of cobs/m2. Grain yield was significantly correlated with total dry matter weight. CGR and N rate. The same treatment also showed higher gross return (Tk. 88063/ha), net return (Tk. 66264/ha) and benefit cost ratio (4.04) indicating economic viability of hybrid maize production.


Abstract-15:

Physiological Behaviour of Mungbean Cultivars Due to Sowing Time
Bangladesh J. Agril Res. 27(1): 75-84. March 2002

M.A.K. Mian, M.A. Aziz, M.A. Hossain and M.R. Karim
Regional Agricultural Research Station, Jessore

Field experiments with three mungbean cultivars viz. BARI mung-2, BARI Mung-3 and BARI Mung-4 under four times of sowing i.e. 15, 30 August 15, 30 September were conducted at the Regional Agricultural Research Station (RARS), Jessore during 1998 and 1999. 30 August sowing of BARI Mung-3 and BARI Mung-4 recorded better plant growth indicating better dry matter production. The same treatments also produced the superior seed yield (1538 and 1409 kg/ha, respectively) contributed by higher number of branches per plant (4.77 and 4.70, respectively), number of pods per plant (27.41 and 26.63, respectively) and 1000-seed weight (43.06 and 43.39 g, respectively).

Abstract-16:

Response of Chickpea to Management Levels in Barind Tract
Bangladesh J. Bot. 32(2): 77-79, 2003 (December)

M.A.K. Mian, M.N. Islam, M.A. Matin, K.U. Ahammad and M.A. Aziz
RARS, Jessore 7400, BARI, Joydebpur, Gazipur 1701, Bangladesh

Field experiments were conducted in the Farming System Research site of Bangladesh Agricultural Resarch Institute in Barind Tract at Saroil, to study responses of chickpea to different levels of field management. In one experiment, five planting methods, viz. broadcasting, line sowing, dibbling, dibbling followed by mulching, mulching and line sowing followed by mulching; and in another experiment, three soil moisture regimes, viz. no irrigation, irrigation at 80% depletion of available soil moisture (ASM) and irrigation at 60% depletion of ASM were studied for chickpea cultivation. Line sowing followed by mulching produced the highest seed yield (1398 kg/ha) followed by line sowing (1365 kg/ha) and dibbling followed by mulching (1302 kg/ha). These three treatments produced maximum dry matter weight per plant. Line sown crop performed better than broadcast crop. Irrigation at 60% depletion of ASM gave the highest seed yield (1623 kg/ha) followed by irrigation at 80% depletion of ASM. The highest seed yield was associated with the production of greater yield components.

Abstract-17:

Studies on Production Factors Limiting Yield of Chickpea
Bangladesh J. Agril. Res. 29(3): 409-418, September 2004

M. Altab Hossain, M.S.A. Khan, M.S. Alom, M.A.K. Mian and S.Ahmed
Bangladesh Agricultural Research Institue, Gazipur 1701 and Regional Agricultural Research Station, Jessore
Field experiments were conducted at the experiment stations of BARI at Joydebpur and Jessore during the winter (rabi) season of 2000-2001 and 2001-2002 to study the production factors limiting performance of yield attributes and yield of chickpea (var. BARI Chola-5). The treatment were T1= complete package of practices (CPP) which included line sowing of treated seeds of chickpea @ 40 kg/ha, with fertilizers (20kg N, 18 kg P, 25 kg K and 20 kg S/ha), timely sowing (15 November), one irrigation at 55 days after sowing (only at Joydebpur) and need based plant protection measures, T2= CPP with 30days delay sowing, T3= CPP minus chemical fertilizers, T4 = CPP plus cowdung @ 5 t/ha only but omission of chemical fertilizers, T5 = CPP plus use of inoculum instead of N, T6= CPP with low seed rates (30 kg/ha); T7= CPP minus irrigation (Joydebpur), T8= CPP minus seed treatment, T9= CPP minus plant protection measures, T10= Farmers’ practice (FP) which included broadcast sowing of untreated seeds of BARI Chola-5 @ 40 kg/ha sown on 15 November with 9 kg P/ha and plant protection measures, and T11= FP minus plant protection measures. Averaged over years, CPP resulted in 69 and 93% higher seed yields (1708 kg/ha at Joydebpur and 2715 kg/ha at Jessore) compared with those of farmers’ practice (1010 kg/ha at Joydebpur and 1405 kg/ha at Jessore). Contribution of organic manure only was positive in increasing seed yield (7-20%). Use of inoculum (instead of N) gave statistically identical yield in both the locations. Reduction in mean seed yield was recorded due to delayed sowing (42%), without plant protection measures (38%), withdrawing chemical fertilizers (31%), using non-treated seed (25%) and low seed rates (24%) at Joydebpur. At Jessore, the corresponding values were 49, 46, 35, 33 and 28%, respectively. Delay in sowing and omitting plant protection measures, chemical fertilizers and seed treatments from CPP were the production factors limiting yield of chickpea.


Abstract-18:

Fertilizer Management in Hybrid Maize-Bush Bean Intercropping Systems
The Agriculturists 3(1 &2): 78-83 (2005)

M. Nurul Islam, M.A.K. Mian, R.U. Choudhury, M.S. Alom and M.S. Aktar
Agronomy division, BARI; Gazipur, RARS. Jessore; PGRC, BARI Gazipur, PRSS, BARI Gazipur
An experiment was conducted at Regional Agricultural Research Station, Jessore during rabi seasons of 2001-2002 to determine optimum fertilizer dose for hybrid maize-bush bean intercropping system. Effects of four fertilizer levels (150-26-50-20, 200-34-66-33, 250-52-100-40 and 300-65-125-50 kg NPKS ha-1) were tested on two planting systems (maize normal row +2 rows bush bean, and maize paired row +4 rows bush bean) of hybrid maize-bush bean intercropping systems. In both the planting systems, the highest yield of maize (9.41 t ha-1) was obtained with 300-65-125-50 kg NPKS ha-1 while bush bean produced the highest green pod yield (8.57 t ha-1) with 200-34-66-30 NPKS ha-1. The highest maize equivalent yield (16.65 t ha-1), gross return (Tk 116550 ha-1) and gross marigin (Tk 89126 ha-1) were recorded from maize paired row + 4 rows bush bean with 250-52-100-40 kg NPKS ha-1 but the highest marginal rate of return (429%) was achieved from maize paired row + 4 rows bush bean with 200-34-66-30 kg NPKS ha-1 (T6). The treatment T6 would be the most economically profitable for hybrid maize-bush bean intercropping system. The results also reveled that 50-18-34-10 kg NPKS ha-1 of fertilizer could be saved by growing bush bean as intercrop with maize.

Abstract-19:
Effects of herbicides on weed control in maize (Zea mays L.)
J. Bangladesh Soc. Agric. Sci. Technol., 3(3 & 4): 209-212, 2006

M.S. Alom, M.A. Hossain, M.A.K. Mian and B.L. Nag
Regional Agricultural Research Station, Jessore

A field experiment was conducted during March-July of 2002 and 2003 at the Regional Agricultural Research Station, Jessore to evaluate the efficacy of herbicides in controlling weeds in maize (cv. Barnali). Treatments consisted of pre-emergence application of U-46, Ronstar, Round up, Raphit and post-emergence application of U-46, Ronstar, Round up and Rephit herbicides. These treatments were compared with the weedy check (no weeding), weeded by hand at 25 and 45 DAE and weeded by BARI weeder at 25 plus one hand weeding at 45 DAE. Among the weed species, Cyperus rotundus L. was found dominant in respect of absolute density, relative density and infestation of weed followed by Cynodon dactylon (L.) Pers, in both the years. Pre-emergence application of U-46 herbicide effectively controlled the weed population and dry weight compared with the unweeded (control) and also other weed control treatments. Weed free treatment generally increased yield components and yield of maize. The plots weeded by hand at 25 and 45 DAE gave higher yield but it was identical with that of the plots weeded by pre-emergence application of U-46. Among the weed control methods tried, U-46 at pre-emergence application had a pronounced effect on gross margin and benefit cost ratio followed by two hand weedings at 25 and 45 DAE.


Abstract-20:

Effect of population density and nitrogen fertilizer on the yield of sweet corn
Bangladesh J. Prog. Sci. & Tech. 5(1): 101-104; January 2007

MS Alom, M Aktheruzzaman, M A Hossain, M A K Mian and M A Rahman
RARS, BARI, Jessore; Agron. Div. BARI, Joydebpur, Gazipur

An experiment was conducted to know the effect of three population densities (66667, 88889 and 133333 plants ha-1 corresponding to 60 cm ´ 25 cm, 45 cm ´ 25 cm and 30 cm ´ 25 cm spacing, respectively) and four N levels (150, 200, 250 and 300 kg ha-1) on sweet corn (cv. 141 BRIXL-10) at the Regional Agricultural Research Station, Jessore during two consecutive rabi (winter) seasons of 2002-2003 and 2003-2004. The results revealed that green cob yield and yield attributes were significantly influenced by the variations of population density and N level. The plant density of 88889 plants ha-1 (45 cm ´ 25cm) recorded significantly higher green cob yield than lower (66667 plants ha-1) and higher 133333 plants ha-1) plant densities in both the years. Significant response to N application was noticed up to 250 kg ha-1. Plant density 88889 ha-1 or spacing of 45 cm ´ 25 cm coupled with 250 kg N ha-1 was optimum for sweet corn variety 141 BARIXL-10 for higher yield during rabi season.



Abstract-21:

Effect of Different Planting Systems in Maize/Spinach-red Amaranth Intercropping
Bangladesh J. Agric. and Environ. 2(2): 69-76, December 2006

F Ahmed, M A Rahman, M A H S Jahan, M Ahmed and M A Khayer (M.A.K. Mian)
Agronomy Division, Bangladesh Agricultural Research Institute
Joydebpur, Gazipur,1701, Bangladesh

An experiment on maize/spinach-red amaranth intercropping was conducted to find out suitable planting system in two successive rabi seasons (2002-2004) where spinach and red amaranth were intercropped one after another with normal and paired row planted maize. Sole plots yield was higher than that of intercrop plots. Although intercropping system reduced maize yield by 4 to 19% in different treatments but total productivity and profitability was increased with an additional yield of spinch (2.84 to 7.08 t/ha) and red amaranth (1.05 to 2.33 t/ha). Intercropping system also increased land equivalent ratio (LER), maize equivalent yield (MEY) and monetary advantage. The highest LER (1.99), MEY (17 t/ha), gross return (129075 Tk/ha), net return (100181 Tk/ha) and benefit cost ratio (4.47) was obtained where 3 rows spinach followed by red amaranth was intercropped with normal row maize. All the intercropping system showed higher BCR than sole maize.


Abstract-22:

Weed Control Methods and Crop Performance in Cabbage
Eco-friendly Agril. J. 2(1): 346-349, 2009 (January)

M N Islam, M A K Mian, M S A Khan, M S Alam and M Azizur Rahman
OFRD, BARI, Commilla

The experiment was done at the farmers field of Kashimpur, Gazipur during winter season, 1998-2001, to find out the most effective weed control method for cabbage cultivation. Weeds were controlled by (i) hand weeding at 15 days after transplanting (DAT) (ii) hand weeding at 15 DAT + 35 DAT (iii) weeding by BARI weeder at 15 DAT + hand weeding at 35 DAT (iv) farmers practice (v) continuous weed free and compared with (vi) no weeding (control). Results revealed that weed population and growth were minimum in weed free, farmer’s practice, two hand weeding and BARI weeder + one hand weeding treatments. Consequently yield, yield attributes and economic performance was better in these weed control treatments. Higher yield of cabbage 56-61 t ha-1 was observed in weed free, farmer’s practice, two hand weeding and BARI weeder + one hand weeding treatments. Co-relation trend indicated that yield of cabbage was negatively correlated with weed growth ( r=-0.76 at p=0.01). However, about 46% yield loss was estimated due to weed competition in cabbage. Thus two hand weeding at 15 DAT and 35 DAT or BARI weeder at 15 DAT + one hand weeding at 35 DAT or farmers practice (4 weeding) was most as suitable weed control method for cabbage cultivation.
Dr. Md. Abul Khayer Mian
Dated: 18 August 2010.