M MADHU, M VENKATA RAMANA, S SREEDEVI. Influence of different preceding crops and N levels on productivity and profitability of zero-till rabi castor (Ricinus communis L.): INFLUENCE OF DIFFERENT PRECEDING CROPS AND N LEVELS ON ZERO-TILL RABI CASTOR. J. Oilseeds. Res. 2017;34(3). doi:10.56739/jor.v34i3.137758