Nitrogen management through organics on the basis of soil test values (STV) insorghum (Sorghum bicolor)–lucerne (Medicago sativa) cropping system

A field experiment was conducted at Centre for Research on Integrated Farming Systems, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar during 2017–18 to 2020–21 with effect of nitrogen management through organics on the basis of soil test value (STV) in sorghum (Sorghum bicolor) - lucerne (Medicago sativa) cropping system. Total six treatments were evaluated based on equivalent yield, fodder profitability and possible viability. Result revealed that application of 50% RDN through FYM (9,615 kg/ha to sorghum and 2,404 kg/ha to lucerne) and 50% RDN through vermicompost (3,333 kg/ha to sorghum and 833 kg/ha to lucerne) or 50% RDN through FYM (9,615 kg/ha to sorghum and 2,404 kg/ha to lucerne) + 25% RDN through VC (1,667 kg/ha to sorghum and 417 kg/ha to lucerne) + 25% RDN through castor cake (658 kg/ha to sorghum and 164 kg/ha to lucerne) or 1/3 RDN each through FYM (6,410 kg/ha to sorghum and 1,603 kg/ha to lucerne), vermicompost (2,222 kg/ha to sorghum and 556 kg/ha to lucerne) and castor cake (877 kg/ha to sorghum and 219 kg/ha to lucerne) based on low STV to both the crops for obtaining higher sorghum dry fodder equivalent yield, fodder quality and improving soil fertility.