Studies on Assessment of Avoidable Yield loss of Sunflower and Groundnut due to Rotylenchulus reniformis

Avoidable yield loss due to reniform nematode, Rotylenchulus reniformis on sunflower for two years revealed significant reduction of yield due to nematode was calculated to be 48.7 and 40.8% in 2002–2003 and 2003–2004 crops season, respectively. The C:B ratio was 1:2.82 and 1:3.11 in two years, respectively. Similarly, groundnut crop was protected with carbofuran 3 G. @ 3 kg a.i./ha and enhanced the yeild of groundnut and significantly decreased the nematode population under field conditions. Avoidable yield loss was 37.7% and C:B ratio was found to be 1:2.73 when the groundnut was sold @ Rs. 20/kg.