Yield and economics of sweet sorghum varieties under varied fertilization grown as main and ratoon crops

Field experiments was conducted at S.V. Agricultural College farm, Tirupati campus of Acharya N.G. Ranga Agricultural University, Andhra Pradesh both during kharif and rabi seasons of 2010 and 2011 to investigate “ Nutrient management in direct sown and ratoon crops of sweet sorghum”. The results revealed that the yield parameters stalk yield, grain yield and net returns of sweet sorghum were recorded highest with variety SPV-422 followed by Madhura hybrid with application of 100-80-80 kg ha−1 N, P2O5 and K2O when grown as main crop. The ratoon crop of sweet sorghum also followed same trend and recorded highest yield and economics with application of 125 per cent of the nitrogen applied to main crop than the other treatments tested in this study.