The experiment was executed at the Agronomy researchfield of Sher-e-Bangla Agricultural University, Dhaka-1207, during the period from November, 2015 to March, 2016 to study the effects of fertilizer management of different combinations of inorganic and organic fertilizers on growth, yield attributes and yield of soybean (var. BARI Soybean 6). The treatment combinations wereT0= Control, T1= fertilization at recommended fertilizer dose (RFD - urea 50 kg ha-1, TSP 150 kg ha-1, MoP 100 kgha-1, gypsum 80 kg ha-1 and boron 500 kg ha-1), T2= Bio-fertilizer + 50% RFD, T3= Biofertilizer + 75% RFD, T4= Mixed fertilizer + 50% RFD, T5= Mixed fertilizer + 75% RFD, T6= Vermi-compost + 50% RFD, T7= Vermicompost + 75% RFD, T8= Poultry litter + 50% RFD and T9= Poultry litter + 75% RFD. Results indicated that application of fertilizer at recommended dose, vermi-compost + 75% RFD and poultry litter + 75% RFD produced higher grain yield 2053, 2073 and 2166 kg ha-1, respectively over control. It was also observed thatconsidering the sustainable yield and environment friendly,poultry litter + 75% RFD (T9) and vermi-compost + 75% RFD (T7) couldbe promising for soybean cultivation. Bangladesh Agron. J. 2018, 21(1): 77-81
Effect of sowing date and weed control method on the growth and yield of soybeanUtjecaj roka sjetve i načina suzbijanja korova na rast i prinos soje EFFECT OF SOWING DATE AND WEED CONTROL METHOD ON THE GROWTH AND YIELD OF SOYBEANAkter, N., Amin, A.K.M.R., Haque, M.N., Masum, S.M. Original scientific paper Izvorni znanstveni članak SUMMARYSowing date and weed management play a significant role in determining soybean growth, development and seed yield. Results showed that different sowing date and weed control methods had significant effect on relative weed density, weed biomass, weed control efficiency, plant height, dry weight plant -1 and seed yield of soybean. Among the infested weed species in the experimental field the dominant weeds were Lindernia procumbens (44.78%), Echinochloa colonum (26.39%) and Cynodon dactylon (16.30%). The results also revealed that early sowing (2 January) brought about the highest seed yield (2.17 t ha -1 ) and sowing delay (1 February) resulted in the lowest yield (1.64 t ha -1 ). Two times hand weeding (20 and 40 DAS) controlled the weeds most effectively and led to highest seed yield (2.23 t ha -1 ) which was statistically similar (2.19 t ha -1 ) with herbicide application. Combination effect showed that the highest seed yield (2.50 t ha -1 ) was obtained from 2 January sowing when the crop was weeded by hand at 20 and 40 DAS.
An experiment was carried out in Agronomy field of Sher-e-Bangla Agricultural University, Dhaka to find out the performance of wheat (var. BARI Gom 27) as influenced by time of irrigation and different mulch materials during 2015-2016. Four levels of irrigation viz. control, one irrigation at CRI (crown root initiation) stage, one irrigation at flowering stage and two irrigations each at CRI + flowering stage; and four different mulch materials viz. control, rice straw, rice husk and plastic sheets were considered as treatment variables. The experiment was laid out in a split- plot design with three replications, assigning irrigation to main plot and mulch materials to sub plots. Results showed that time of irrigation and different mulch materials had significant effect on plant characters, yield and yield components of wheat. Two irrigations given at CRI + flowering stage resulted with significantly higher plant height, number of spikelets spike-1, number of grains spike-1, 1000- grain weight, grain yield, straw yield and harvest index over one irrigation and control plots. Among mulch materials, black plastic mulch resulted with significantly higher grain yield of wheat. The highest grains (4.15 t ha-1) and straw yields (4.25 t ha-1) were obtained with two irrigations at CRI and flowering stage with black plastic mulch for achieving higher productivity. Bangladesh Agron. J. 2018, 21(1): 71-76
A field experiment was carried out at the Agronomy Field, Sher-e-Bangla Agricultural University, Dhaka from December, 2011 to May, 2012 to study the yield of Boro rice under system of rice intensification (SRI) with different water regimes and manural status. The experiment consisted of two factors as three water regime viz., waterlogged condition (W1), saturated condition (W2) and alternate wet and dry condition (W3) in the main plots, and six manure and fertilizer combinations viz., cowdung 100% (F1), compost 100% (F2), chemical fertilizer 100% (F3), 50% chemical fertilizer + 25% compost + 25% cowdung (F4), 50% chemical fertilizer + 50% cowdung (F5) and 50% chemical fertilizer + 50% compost (F6) in the sub-plots. Water regime had significant effect on yield and yield components except number of effective tillers m-2, filled grains panicle-1, weight of 1000-grain and harvest index. The highest grain yield (5.74 t ha-1) was obtained from the waterlogged condition that was statistically similar with saturated condition (5.69), whereas alternate wet and dry (AWD) gave the lowest grain yield (4.36 t ha-1). Manural status also significantly influenced yield attributes except 1000-grains weight. The combination of chemical fertilizer, cowdung and compost showed the best performance compared to other manural status. The highest grain yield (5.81 t ha-1) was obtained from chemical fertilizer 50% + cowdung 25% + compost 25% and the lowest grain yield (4.71 t ha-1) was obtained from compost 100%. The highest number of effective tillers hill-1 (33.71) was obtained from compost 100%. Chemical fertilizer 50% + cowdung 25% + compost 25% showed the highest harvest index (46.78%). In case of interaction effect of water regime and manural status the highest grain yield was observed in chemical fertilizer 50% + cowdung 25% + compost 25% of saturated condition (6.80 t ha-1).Bangladesh Agron. J. 2014, 17(2): 1-8
An adequate supply of phosphorus (P) is important for the proper growth and yield of lentil, particularly in poor fertile soil. As such an experiment was carried out to evaluate the effects of phosphorus (P) fertilizer application on growth, yield, and yield components of lentil at the agronomy research field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during 2013-201. Four lentil varieties (BARI Masur-4, BARI Masur-5, BARI Masur-6, and BARI Masur-7) and four levels of P (0, 20, 40 and 60 kg P2O5 ha-1) were used in this experiment as treatment variables. Interaction of cultivar and P levels showed a significant influence on all the plant characters studied except plant height and branch production. The highest seed yield (1.98 t ha-1) was obtained from the combination of BARI Masur-7 with 40 kg P2O5 ha-1, and the lowest (1.08 t ha-1) was from BARI Masur-5 with 0 kg P2O5 ha-1. Addition of P fertilizer beyond 40 kg ha-1 decreased seed yield irrespective of varieties. Results revealed that the application of P fertilizer offers a large scope for obtaining a higher yield of lentil in Bangladesh. However, the application of P fertilizer at the rate of 40 kg P2O5 ha-1 would be the optimum for achieving higher yield irrespective of varieties. Bangladesh Agron. J. 2020, 23(1): 29-36
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