Effect of Integrated Nutrient Management Practices on Growth, Yield Attributes, Yield and Economics in Greengram (Vigna radiata L.)-Sorghum [Sorghum bicolor (L.) Moench] Sequential Cropping System under Rainfed Conditions

Abstract

A field experiment was conducted at Agricultural Research Station, Tandur, Professor Jayashankar Telangana State Agricultural University during 2018-19, 2019-20 and 2020-21 to evaluate the response of greengram - sorghum cropping sequence to integrated nutrient management in terms of yield attributes, yield and economic returns. The field experiment was laid out in split plot design with 3 replications. In Main plots three treatments for kharifgreengram: M1-FYM @ 5 t ha-1 + 0 kg N ha-1, M2-FYM @ 5 t ha-1 + 10 kg N ha-1 and M3-FYM @ 5 t ha-1 + 20 kg N ha-1 and four sub-plot treatments for rabisorghum: F1- 0 kg N ha-1, F2-20 kg N ha-1, F3- 40 kg N ha-1 and F4- 60 kg N ha-1.Pooled data results indicated growing of kharifgreengram with application of FYM @ 5.0 t ha-1 and N (0, 10 & 20 kg N ha-1) levels were not significant on rabisorghum growth & grain yields, but stover yields (3412 kg ha-1) and sorghum equivalent yields (4475 kg ha-1) were significantly higher with application FYM @ 5 t ha-1 + 20 kg N ha-1.  The economic returns and BC ratio also highest with application FYM @ 5 t ha-1 + 20 kg N ha-1. Among the N levels, application of nitrogen @ 60 kg ha-1 was significantly recorded highest pooled data on plant height (197.7 cm), panicle length (19.69 cm), panicle width (11.55 cm), biomass (5.61 t ha-1), grain yields (1950 kg ha-1), fodder yields (3663 kg ha-1) and sorghum equivalent yields (4586 kg ha-1) of rabisorghum. The highest grass returns (Rs.61,570ha-1), net returns (Rs.37,870ha-1) and BC ratio (1.60) was recorded with application of 60 kg N ha-1.