Effect of crop stand establishment and nutrient management of Rice on growth, yield and economics of rice fallow sunhemp

A field experiment was conducted for two consecutive years (2017 -18 and 2018-19) at the Agricultural College Farm, Naira. The treatments consisted of two main plots Wet seeded rice (Drum seeding) and transplanting method and four sub plots viz. S1: 100% RDF (Chemical fertilizers); S2: 75% RDF+ 25% RDF through FYM; S3: 75% RDF + 25% RDF through green manure crop (Sunhemp); S4: 50% RDF + 25% RDF through FYM + 25% RDF through green manure crop (Sunhemp). During rabi sunhemp is sown as rice fallow crop for seed purpose. Significant increase in growth and yield attributes of rice fallow crop sunhemp remained with the treatment, which received 50% RDF + 25% RDF through FYM + 25% RDF through green manure crop (S4) which was however at par with 75% RDF+ 25% RDF through FYM (S2) during both the years of study. The residual effect of INM treatments imposed in kharif rice on succeeding rice fallow sunhemp, resulted in recording higher net return and higher return rupee-1 investment with 50% RDF along with 25% RDF through FYM + 25% RDF through green manure crop which was at par with 75% RDF + 25% RDF through FYM during both the years of study.