Studies on the Pest Complex of Potato Genotypes for Processing Purposes

Abstract

The present study investigated the pest complex associated with processing potato genotypes under natural field conditions in the Indo-Gangetic plains. Field observations across two consecutive seasons revealed a diverse pest spectrum, including aphids (Myzus persicae), whiteflies (Bemisia tabaci), jassids (Empoasca spp.), cutworms (Agrotis ipsilon), and potato tuber moth (Phthorimaea operculella). Significant variation in pest incidence was observed among genotypes, with Kufri Chipsona-2 and Kufri Frysona exhibiting lower infestation levels compared to local checks. Despite natural pest pressure, these processing genotypes maintained higher yields and acceptable processing quality, with dry matter content above 20% and reducing sugars below 0.25%. Pest incidence correlated positively with temperature and humidity, while tuber moth damage increased with delayed harvests. The findings highlight the importance of selecting resistant varieties and eco-friendly management practices for sustainable potato production aimed at the processing industry.