Residual effect of integrated nutrient management practiced in sudan grass on growth and yield of succeeding fodder oat

摘要

Field experiments were conducted at B.H.U., Varanasi, Uttar Pradesh, India during 2015-16 and 2016-17 to evaluate the residual effect of INM practiced in kharif sudan grass on growth and yield of succeeding fodder oat crop. Treatments comprised combination of two inorganic fertility levels viz. 75 RDF and 100 RDF, and four levels of organic manures viz. 20 kg Nha~(-1) through FYM, 20 kg Nha~(-1) through vermicompost, 40 kg Nha~(-1) through FYM, 40 kg Nha~(-1) through vermicompost laid out in factorial RBD with three replications. Among two inorganic fertilizer levels, maximum growth and yield of oat was registered under100 RDF. The application of organic manures in preceding sudan grass also had significant effect on succeeding oat crop. The maximum plant height, tillers count/linear meter, leaf area index, dry matter accumulation, green fodder yield (569.51 qha~(-1)) and dry fodder yield (113.63 qha~(-1)) were recorded with the application of 40 kg N ha~(-1) through FYM to preceding sudan grass. Though it remained at par with application of 40 kg Nha~(-1) through FYM but proved significantly superior to application of 20 kg Nha~(-1) through FYM and application of 20 kg Nha~(-1) through vermicompost. Thus, it may be concluded that the application of organic manures had long term positive effects succeeding oat crop.