Certain essential plant oils, widely used as fragrances and #avors in the perfume and food industries, have long been reputed to repel insects. Recent investigations in several countries con"rm that some plant essential oils not only repel insects, but have contact and fumigant insecticidal actions against speci"c pests, and fungicidal actions against some important plant pathogens. As part of ...

A field experiment conducted during the kharif 2018 evaluated seasonal incidence of insect pests mungbean. The results revealed occurrence major sucking viz., whitefly Bemisia tabaci (Genn.), leafhopper Empoasca kerri Pruthi, aphid Aphis craccivora Koch from vegetative stage to maturity stage. lepidopterans tobacco caterpillar Spodoptera litura (F.) and blue butterfly Lampides boeticus L., were...

Haemolymph associated phenol oxidase is a critical component of invertebrate immune reaction and cuticle sclerotization. Phenol oxidase catalyses the conversion of mono-phenols to diphenols and quinones which finally leads to melanin formation. We have cloned the c-DNA encoding phenol oxidase from the haemocytes of Spodoptera litura and expressed it in Escherichia coli. The encoding gene is 245...

Feeding deterrents or antifeedant chemicals are those chemicals which inhibit feeding of insect on a treated food material without necessarily killing or repelling them. Plants with ant feeding properties are increasingly being used against phytophagous insect pests for protection of crops. In the present study of growth regulating action of Leaf extract of Catharanthus roseus on development st...

Penelitian ini bertujuan untuk menegetahui efikasi ekstrak buah bintaro terhadap tingkat mortalitas larva ulat grayak (Spodoptera litura F) secara in-vitro dan konsentrasi yang tepat meningkatkan in-vitro. Rancangan digunakan dalam penelitian adalah Acak Lengkap (RAL), terdiri dari 5 perlakuan, yaitu: B0 = Kontrol, B1 Ekstrak 30% (30 ml + 70 air), B2 50% (50 50 B3 70% (70 30 B4 90% (90 10 air) ...