INFLUENCE OF DIFFERENT COMBINATIONS OF ORGANIC AND INORGANIC FERTILIZERS ON GROWTH AND YIELD OF BLACKGRAM

Abstract

A field experiment was conducted to study the influence of different combinations of organic and inorganic fertilizer on growth and yield of blackgram at the central experimental farm, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh during March to June, 2017. Treatments consisted of two combined organic and inorganic varieties viz. V 1 = BARI Mash-2, V 2 = BARI Mash-3, eight levels of fertilizers viz. F 0 = Control, F 1 = RDF, F 2 = 25% less than RDF + Vermicompost, F 3 = 50% less than RDF + Vermicompost, F 4 = 25% less than RDF + Poultry litter, F 5 = 50% less than RDF + Poultry litter, F 6 = 25% less than RDF + Mixed fertilizer, and F 7 = 50% less than RDF + Mixed fertilize. The experiment was conducted following Randomize Complete Block Design (RCBD) with 3 replications. Results revealed that the growth and yield of blackgram were significantly influenced by organic fertilizer where variety V 2 and fertilizers F 2 , F 1 and F 3 gave the highest seed yield (1.83 t ha , 1.82 t ha -1 and 1.79 t ha -1 , respectively). The highest seed yield of the interaction treatment was attributed to V 2 ii

F 2 followed by V 2

and 1.87 t ha -1 ). It can be concluded that the application of organic and inorganic fertilizer had a positive effect on BARI Mash-3 and 25% less than recommended dose of fertilizer + vermicompost or recommended dose of fertilizer can be suggested to cultivate this crop.