INFLUENCE OF NITROGEN AND PHOSPHORUS LEVELS ON YIELD AND SEED QUALITY OF BLACKGRAM

Abstract

The experiment was conducted at the research farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh during March to June 2017 to study the influence of nitrogen and phosphorus levels on yield and seed quality of blackgram. The experiment comprised as two factors, i.e. different fertilizer doses i.e. F 0 = all fertilizer except N & P, F 1 = 50% less N & P, F 2 = Recommended dose of N & P with others, F 3 = 50% higher N & P; and two varieties V 1 = BARI mash2, V 2 =BARI mash3. The experiment was conducted following the Randomized Complete Block Design with three replications. Result indicated that the number of pods plant (68.73), number of seeds pod -1 (7.21), 1000 seeds weight (40.79 g) attributed to higher seed yield (2014.70 kg ha -1 ) with fertilizer treatment F 3 . Similarly, number of pods plant

(60.45), number of seeds pod -1 (6.57) and 1000 seeds weight (39.56 g) accelerated higher seed yield (1726.90 kg ha -1 ) of the variety V 2 (BARI mash3). Interaction of F 3 V 2 also gave the higher seed yield and other yield attributes. The seed quality parameters i.e. germination (%), shoot length, root length, shoot dry weight and root dry weight was also highest in the fertilizer F 3 (94.66%, 9.85 cm, 16.41 cm, 17.36 g and 70.96 g) and variety V 2 (86.08%, 8.81 cm, 15.11 cm, 15.33 g and 60.35 g). So, BARI mash3 can be cultivated with higher doses of fertilizer (50% higher N & P) to get maximum yield and quality seeds.

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