The present study was stimulated by the problem of onion seed production where seed production is possibly only winter period after whichrapid increase in temperature as well as early shower adversely affect the quality of seed. To overcome this situation a field experiment wasundertaken to find out the optimum planting time for maximizing quality true seeds of onion. The experiment was laid out in a randomizedcomplete block design with four replications. The treatments were five planting dates viz. 1 October, 15 October, 30 October, 15 Novemberand 30 November to achieve the objective. The research work was done at On-Farm Research Division, BARI, Bogra during September, 2010to June, 2011. The results revealed that the growth parameters, seed yield components, health and quality of harvested seeds were significantlyinfluenced by the different treatments. Results showed that among different planting dates, 15th November was the best for seed and quality.DOI: http://dx.doi.org/10.3126/ijasbt.v3i1.11847 Int J Appl Sci Biotechnol, Vol. 3(1): 67-72
The effect of two planting methods (direct seed sowing and transplanting of seedlings) and seven dates of planting (8 Oct., 2 Nov., 27 Nov., 22 Dec., 16 Jan., 10 Feb. and 5 March) on the production of lettuce was compared. ‘Green Wave’ a loose leaf Japanese variety was used. The average yield of the direct seeded crops (17.16 t/ha) was found to be almost double than that of the transplanted crops (9.08). The yields (t/ha) from different dates of planting were 13.7 (8 Oct.), 15.04 (2 Nov.), 8.94 (27 Nov.), 14.54 (22 Dec.), 21.45 ( 16 Jan.) 10.16 (10 Feb.), and 8.02 (5 March). The highest yield of 24.0 t/ha was obtained from direct seedling on 16 January. Key Words: Method; date; planting; production of lettuce. DOI: 10.3329/bjar.v34i1.5756Bangladesh J. Agril. Res. 34(1) : 75-80, March 2009
The experiment was conducted at Shibganj upazila under Bogra district during October, 2014 to January, 2015 to observe the effect of planting dates on the yield of mustard seed. There were five planting dates viz. 25 October, 30 October, 05 November, 10 November and 15 November. Significant variations due to different planting dates were observed in plant height, number of leaves plant-1, number of siliqua plant-1, number of seed siliqua-1, 1000 weight plot-1, yield plot-1and yield ha-1of mustard. Results showed that the highest seed yield was1.50 t ha-1 obtained from 30 October. The lowest seed yield was 1.0 t ha-1 from 15 November. From the results, the best planting date of mustard is on 30 October in the northern parts of Bangladesh. Int J Appl Sci Biotechnol, Vol 3(4): 651-654
A field experiment was conducted at the Multiplication Testing Site (MLT), Joypurhat Sadar upazila with Potato-Mugnbean -T. Aman rice cropping pattern during November/2007 to November/2008 to verify different nutrient management approaches and to determine the economic dose of fertilizer for the said cropping pattern. The experiment was designed with five treatments for whole of the cropping pattern in a randomized complete block design with six replications. The treatments were, soil test based fertilizer dose for moderate yield goal, soil test based fertilizer dose for high yield goal, integrated plant nutrient management, farmers' practice, and control. Cowdung was applied at the first crop potato only in the cropping sequence. The varieties for potato, mungbean and T. Aman rice were Diamant, BARI Mung-6, and BR11, respectively. The results demonstrated that the tuber yield of potato, seed yield of mungbean, and grain yield of T. Aman rice were significantly influenced by the different treatments. The highest tuber yield (25.01 t/ha) was obtained from integrated plant nutrient management treatment. In mungbean, the highest seed yield (1384 kg/ha) was also recorded from NPKS for high yield goal with residual cowdung treatment. The results of NPKS application for high yield goal with residual cowdung had a positive effect on seed yield of mungbean. Grain and straw yields of T. Aaman rice were also significantly influenced by different treatments. The highest grain yield (5.68 t/ha) and straw yield (5.82 t/ha) were also observed in NPKS for high yield goal with residual cowdung treatment. The results also indicated that the residual cowdung had a positive effect on grain and straw yields of T. Aman rice. Cost and return analysis of different nutrient management packages for the whole cropping pattern showed that the highest marginal benefit cost ratio (8.64), gross return (Tk. 3,79,960/ha) and gross margin (Tk. 3,43,360/ha) were obtained from integrated plant nutrient management treatment and the lowest from soil test based fertilizers for moderate yield goal treatment. So, considering crop productivity, economic return, and soil fertility, integrated plant nutrient management for high yield goal with 5 t/ha cowdung could be recommended for the Potato-Mungbean-T Aman rice cropping pattern at Joypurhat and similar soils of Level Barind agroecological zone for sustainable higher yield.
The present study was stimulated by the problem of onion seed production where seed production is possibly only winter period after which rapid increase in temperature as well as early shower adversely affect the quality of seed. The experiment was laid out in a randomized complete block design with four replications to determine optimum doses of manures and fertilizers for maximizing quality true seeds of onion. Six treatments viz. T1= Only inorganic fertilizer recommended by Spices Research Centre (SRC), T2 = T1 + Cowdung manure 7.5 t/ha, T3= T1 + Poultry manure 5 t/ha, T4= T1 + Mustard oil cake 5 t/ha, T5= T1 + Dhaincha 5 t/ha and T6= Control (No manures and fertilizer application)were consisted to achieve the objective. The research work was done at On-Farm Research Division, BARI, Bogra during September, 2010 to June, 2011. The results revealed that the growth parameters, seed yield components, health and quality of harvested seeds were significantly influenced by the different treatments. Results showed that among different treatments, inorganic fertilizer Urea, TSP, MoP, Gypsum, Zinc oxide and Boric acid @ 250, 275, 150, 110, 3 and 5 kg/ha, respectively along with Cowdung 7.5 t/ha was the best for true seed production of onion at Bogra region in Bangladesh.Int J Appl Sci Biotechnol, Vol 3(2): 162-166 DOI: http://dx.doi.org/10.3126/ijasbt.v3i2.12279
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