Effect of in situ moisture conservation practices and nitrogen levels on growth, yield and economics of rabi sorghum under rainfed condition.

摘要

A field experiment was conducted to study the effects of in situ moisture conservation practices and nitrogen levels on the growth, yield and economics of rabi sorghum under rainfed vertisol during rabi 2002 at the Main Agricultural Research Station, University of Agricultural Sciences in Dharwad, Karnataka, India. Among the different in situ moisture conservation practices, formation of ridges and furrows (15.78 q/ha) and compartment bunding (14.96 q/ha) recorded 34.4 and 27.4% higher grain yield, respectively, over the flat bed (11.74 q/ha) method of sowing. Broad bed and furrows (13.56 q/ha) were at par with compartment bunding. Application of 75 kg N/ha produced higher grain yield (15.12 q/ha) over the application of 25 kg N/ha (12.53 q/ha), but was at par with 50 kg N/ha (14.38 q/ha). Ridges and furrows and compartment bunding with 50 kg N/ha recorded 49.47 and 37.99% higher net returns, respectively, compared to flat bed method of sowing (farmers' practice). Interaction effects were found non-significant.