Rice leaffolder, Cnaphalocrocis medinalis (Guenee) and yellow stem borer, Scirpophaga incertulas (Walker) are the two dominant species among rice pests cause considerable damage in India. Various strategies have been employed for managing these insecticides as chemical control factors first line of defense but it has become difficult to manage due development resistance. Therefore, identificati...

In the context of complex field problems compatibility of an efficacious insecticide with other agrochemicals normally used in the field is essential. In this view emamectin benzoate 5 SG 11 g a.i. ha -1 was tested with commonly used insecticide, fungicide and fertilizers. Studies were conducted in both laboratory (physical and phytotoxcity experiment) and field experiments (bio efficacy and ph...

The preference of cassava as a major host by Prostephanus truncatus Horn is a major constraint to ample production of cassava, Manihot esculenta Crantz and storage. This study analyzed the nutritional and secondary metabolite compositions in 15 cassava varieties, evaluated levels of damage and reproduction by P. truncatus, and assessed their resistance to attack. One hundred grams of dried cass...

To observe the aggregation and dispersal behavior of adult European corn borer, Ostrinia nubilalis (Hu ̈ bner), males in search of mates, two populations were marked, each with a different dye. One population was continuously reared in the laboratory (.5 yr) and the other was collected annually from the Þeld. From 1986 to 1988, marked adults were released in two release sets per year, with three...

Coffee is a globally important crop that is subject to numerous pest problems, many of which are partially controlled by predatory ants. Yet several studies have proposed that these ecosystem services may be reduced where agricultural systems are more intensively managed. Here we investigate the predatory ability of twignesting ants on the main pest of coffee, the coffee berry borer (Hypothenem...

Epidemic populations of red oak borer, Enaphalodes rufulus (Haldeman), a native wood-boring cerambycid beetle, appear to be a primary factor contributing to oak mortality across the Ozark Mountains of Arkansas, Oklahoma and Missouri. We developed a rapid estimation procedure (REP) to quickly, non-destructively and economically assess current density and infestation history of red oak borer in n...

The introduction of an agricultural pest species into a new environment is a potential threat to agroecosystems of the invaded area. The phytosanitary concern is even greater if the introduced pest's phenotype expresses traits that will impair the management of that species. The invasive tomato borer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), is one such species and the characterizati...

This paper is the first report of the impact on the bacterial community in the midgut of the Asian corn borer (Ostrinia furnacalis) by the chitinase from the transgenic Trichoderma strain. In this study, we detected a change of the bacterial community in the midgut of the fourth instar larvae by using a culture-independent method. Results suggested that Proteobacteria and Firmicutes were the mo...

The sugarcane borer (SCB) [Diatraea saccharalis (F.)] and Mexican rice borer (MRB) [Eoreuma loftini (Dyar)] are two economically important pests of sugarcane (Saccharum spp. hybrids) in the United States. Because of similarities in larval feeding behavior, selecting for resistance to one species could provide resistance to the other, a phenomenon we have termed “crossresistance”. The objective ...

A farmer's decision on whether to control a pest is usually based on the perceived threat of the pest locally and the guidance of commercial advisors. Therefore, farmers in a region are often influenced by similar circumstances, and this can create a coordinated response for pest control that is effective at a landscape scale. This coordinated response is not intentional, but is an emergent pro...