Seasonal incidence, correlation and regression among weather parameters against mites on summer okra

Abstract

On summer okra crop seasonal incidence as influenced by weather parameters on mites population reached its peak during last week of April with 8.40 mites in 6.25cm 2 leaf area/ 3 leaves. The correlation between mite population was positively significant against maximum temperature (r= 0.841**), minimum temperature (r= 0.805**), evaporation (r= 0.803**), wind velocity (r= 0.728**) and bright sunshine hours (r= 0.649*), while with morning R.H (r=-0.717**) and evening R.H (r=-0.643*) it was negatively significant. The equations of linear and multiple regression were set of mite population by working out regression coefficient (b) and constant (a) alongwith coefficient of determination (R 2

Occurrence of Natural Enemies of Tetranychus macfarlanei on Okra at Vidarbha Region

“…) showed highly significant and positive association of mite population with Stethorus sp. (r = 0.92** and 0.95**) and predatory mites (r = 0.92** and 0.94**), respectively during Kharif 2013 and 2014 Jadhav, et al, (2016). reported highly significant positive association of mite population with Stethorus sp.…”