H. NAVEENA, B. G. SHEKARA*, K. N. MANOJ AND N. M. CHIKKARUGI
Department of Agronomy, COA, V. C. Farm, Mandya, UAS, Bengaluru (Karnataka), India
AICRP on Forage Crops, ZARS, V.C. Farm, Mandya (Karnataka), India
Department of Agronomy, UAS, GKVK, Bengaluru (Karnataka), India
(Received : 04 June 2021; Accepted : 25 June 2021)
A field experiment was conducted during kharif and rabi seasons of 2019-20 at Zonal Agricultural Research Station, Vishweswaraiah Canal Farm, Mandya, Karnataka to study the effect of different organic sources of nutrients on production potential and profitability of fodder maize-cowpea cropping system. The experiment was laid out in a randomized complete block design with ten treatments comprising different organic sources of nutrients and replicated thrice. The data revealed that, application of 50% RDN through FYM and remaining 50% RDN through poultry manure as top dress at 30 DAS resulted higher green fodder yield (424.13 and 188.67 q/ha) and dry matter yield (117.13 and 40.18 q/ha) both in fodder maize and succeeding fodder cowpea, respectively. The same combination of organic nutrients sources also recorded higher nitrogen (217.03 and 111.25 kg/ha), phosphorus (21.17 and 6.82 kg/ha) and potassium uptake (208.14 and 69.79 kg/ha) at harvest and also found profitable with higher net returns (Rs. 53043/ha and Rs. 24104/ha) and benefit cost ratio (2.67 and 2.05) both in fodder maize and succeeding fodder cowpea, respectively.
Key words:Green fodder, poultry manure, fodder maize, fodder cowpea, nutrients uptake