Damage potential of sapota seed borer, Trymalitis margarias and impact of physico-chemical parameters under West Godavari district

Abstract

The studies on seasonal incidence of sapota seed borer, Trymalitis margarias on var. Kalipatti and influence of morphological and biochemical parameters against seed borer on thirteen varieties of sapota during 2023-24 at Dr.YSRHU, HRS, Venkataramannagudem. Per cent fruit damage was maximum (11.00%) during first fortnight of November and minimum (1.00%) in second fortnight of February. Correlation studies revealed that per cent fruit damage had a significant positive effect with maximum relative humidity (0.73**). However, among morphological parameters number of seeds (-0.41NS) showed significant and negative correlation with the per cent leaf damage while, biochemical studies revealed that Total Soluble Solids (0.62*) and reducing sugars (0.70**) exhibited significant positive correlation with per cent fruit damage.