Control of Potato Tuber Moth, Phthorimaea Operculella (Lepidoptera: Gelichiidae) in Rustic Farm Storage and Field by Means Biological and Cultural Practices.

Abstract

The present work was conducted in Qalubyia Governorate during 2010 to control the potato tuber moth, Phthorimaea operculella (Zeller) (Lepidoptera: Gelichiidae) in rustic farm storage and potato fields. Results showed that, double release of the parasitoid, Trichogramma evanescens Westwood and the predators, Chrysoperla carnea (Stephens) and Orius albidipennis (Reuter) were effective as biological agents against P. operculella under straw-cover heaps. The highest reduction percentage occurred with application of both T. evanescens and C. carnea, they reduced the infestation to 75.56% whereas application of both T. evanescens and O. albidipennis reduced the infestation to 56%. Application of O. albidipennis alone gave poor reduction percentage (5.1%). One release of O. albidipennis reduced the infestation to 21% in the field. However, application the agronomic cultural practices reduced rate of infestation to 45% at the trail end in the storge.

Intraguild interaction between the entomopathogenic fungus Beauveria bassiana and two aphid predators

“…They have a wide prey range such as aphids, whiteflies, mites, and eggs of lepidopteron insects so, Ch. carnea is used in IPM programs Gaber et al, 2012). Coccinella septempunctata, (L.) (Coleoptera: Coccinellidae) commonly known as the seven spotted lady beetles, are the majority of ladybird beetles that work as predators of aphids, whiteflies, jassids, thrips, mealybugs, leafhoppers, scale insects and mites (Elheneidy et al, 2008), both adults and larvae of C. septempunctata have a great potential to feed on aphid population.…”