Using trichagramma evanescens wet wood for controlling pectinophora gossypiella (Saund.) and earieas insulana (Boisd) in Kafr El-Sheikh Governorate, Egypt.
Abstract: Augmentative biological control, where natural enemies are periodically introduced, is commercially applied on large areas in various cropping systems worldwide. Initially augmentative biological control was used to manage pests that had become resistant to pesticides. The use of selective chemicals is an important strategy within pest management programs, since it reduces the population of the phytophagous insects without affecting significantly the natural enemies. In addition, to maximize the compatibleness between the chemical and biological controls, it is needed to know the selectivity and the conditions suitable use of an insecticide, in order to reduce its impact on the natural enemies. Insecticides such as Bt (formulations of Bacillus thuringiensis) and some insect growth regulators have very little or no impact on Trichogramma and can be used in IPM programs witl. this egg parasitoid (Denilson et al 2003).
In Egypt, the basic studies for mass rearing and released of Trichogramma spp. against cotton bollworms began in 1992 at Cotton Bollworms Department, Plant Protection Research Institute, Agriculture Research Center, Dokki, Gizz. Biological control in cotton through Trichogramma spp. releases has been facilitated by the activities of the same Department since 1995. Between 1995 and 2003, releases of this parasitoid to control cotton bollworms (pink and spiny bollworms) were initiated in cotton fields at Sharkia and Qalyubia Governorates. The use of parasitoids reduced insecticide applications by a significant amount (Abd El-Hafez & Nada 2000; Abd EI¬Hafez et al. 2002; Shalaby et al. 2002; Abd EI-Hafez 2004 and Abd El-Hafez et al., 2004). In 2003, Ministry of Agriculture and Land Reclamation established 18 laboratories at different Governorates for producing Trichogramma with the aim of controlling cotton bollworms and several lepidopteran pests on vegetables and other crops. In 2004 cotton season, more support was achieved by the aforementioned Ministry for releasing Trichogramma in a large scale in cotton fields. The treated area increased from one thousand feddan at 2003 cotton season to 12000 feddan at 2004 cotton season. This work was conducted at Kafr El- Sheikh Governorate, Egypt in 2003 and 2004 cotton seasons to evaluate a recommended biological control program against pink bollworm, Pectinophora gossypiella (Saund.) and spiny bollworm Earias insulana (Boisd.). This program includes the local egg parasitoid T. evanescens and the recommended formulations of Bacillus thuringiensis and some insect growth regulators if this parasitoid fails to maintain boll infestation below 3% (economic threshold level of infested bolls in Egypt).
Publication year 2006
Pages 127-138
Availability location معهد بحوث وقاية النباتات--7ش نادى الصيد--الدقى-الجيزة
Availability number
Organization Name
City القاهرة
serial title مجله الجمعية المصرية لعلم الحشرات
ISSN 1110-0885
Author(s) from ARC
Agris Categories Protection of plants - General aspects
AGROVOC
TERMS		 Biological control. Earias insulana. Natural enemies. Pectinophora gossypiella. Trichogramma evanescens.
Publication Type Journal
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