Abstract The Scuttle fly, Eurygaster integriceps Puton (Hemiptera: Scutelleridae) is a key pest of wheat and barley. univoltine migrates from fields following harvest to high elevations; then, the spring it moves back fields. Natural enemies may have an important role in decreasing population’s level overwintering sites. In present study, adults E. were collected sites Isfahan province, Iran, O...

Several potential cover crops were evaluated for their susceptibility to Meloidogyne arenaria race 1, M. incognita race 1, and M. javanica in a series of five greenhouse experiments. No galls or egg masses were observed on roots of castor (Ricinus communis), cowpea (Vigna unguiculata cv. Iron Clay), crotalaria (Crotalaria spectabilis), or American jointvetch (Aeschynomene americana). Occasional...

A potential strategy for controlling pests is through the use of "companion plants" within a crop system. This strategy has been used in several trials to fight against a major crop insect pest: the aphid. We reviewed the literature to highlight the major mechanisms by which a companion plant may act. Trials carried out under laboratory or field conditions revealed that companion plants operate...

Background: Sunn hemp (Crotalaria juncea L.) is an important annual legume used as green manure. It contains pyrrolizidine alkaloids, which are apparently effective in suppressing nematodes. pertinent to know the growth stage during alkaloid concentrations become higher. Methods: The period of days necessary for flowering, pod and one pods at different stages five sunn cultivars with May July s...

ooencyrtus fecundus ferriere & voegele (hymenoptera: encyrtidae) is one of the gregarious egg parasitoids of sunn pest that can superparasitize the host. superparasitism has inverse effects on fitness, reproductive potential, competition ability and adult size of gregarious parasitoids. in this study, the effects of superparasitism and its intensity (four levels including singleton, twin, tripl...

Crop rotation is a common means of reducing pathogen populations in soil. Several rotation crops have been shown to reduce soybean cyst nematode (Heterodera glycines) populations, but a comprehensive study of the optimal crops is needed. A greenhouse study was conducted to determine the effect of growth and decomposition of 46 crops on population density of H. glycines. Crops were sown in soil ...

virulence of blastospores and conidia of the fungus metarhizium anisopliae were investigatedon different instar nymphs and adults of sunn pest, eurygater integriceps. experiments werecarried out through a factorial arrangement in a completely randomized design of threereplications. the bioassays were performed through immersion method. results revealedsignificant differences among virulence of ...

Maize is an ideal forage crop for ensilage because of its high levels fermentable carbohydrates, although it low in protein. Sunn hemp a legume with crude protein content potential to be used combination maize provide silage higher content. Different percentages sunn hemp-maize mixtures 80-20, 60-40, 40-60 and 20-80 respectively were compared silages sole hemp. In the laboratory study, DLG clas...