Author(s):

Ashwini TR, Dr. Ganajaxi Math, Dr. HB Babalad and Dr. Jones P Nirmalnath

Abstract: A field experiment was conducted at Main Agricultural Research Station, Dharwad on medium black soil during Kharif-2016 to evaluate the effect of different residue based composts and biofertilizers on seed protein content, protein yield, nutrient uptake and yield of pigeonpea. There were 9 treatments consist of T₁- T₆: sesame, wheat, pigeonpea, cotton and maize residue composts and FYM along with RDF and biofertilizers, respectively and T₇: FYM without biofertilizers along with RDF, T₈-RDF with biofertilizers and T₉-RDF alone. At harvest, T₆ has recorded significantly higher uptake of nitrogen, phosphorus and potassium (143.76, 22.68 and 36.17 kg ha^-1, respectively) over other treatments and While, significantly lower uptake of nitrogen, phosphorus and potassium (92.27, 12.31 and 22.49 kg ha^-1, respectively) were recorded with RDF alone. Significantly higher seed protein content and protein yield (24.38 % and 480.00 kg ha^-1) was recorded in T₆ as compared to T₈ (21.71 % and 307.62 kg ha^-1, respectively) and T₉ (22.19% and 278.61 kg ha^-1, respectively) and all other treatments were found on par with T_6. Similarly significant higher seed yield (2,158 kg/ha) and haulm yield (5,176 kg/ha) was recorded in T₆ as compared to T₈ (1,387 and 4,313 kg/ha, respectively) and T₉ (1,283 and 4,183 kg/ha, respectively) and other treatments were found on par with T_6. Application of crop residue based composts (sesame, wheat, pigeonpea, cotton and maize) or FYM along with biofertilizers and RDF were found optimum to get substantial pigeonpea yield.

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