الفهرس 
Chemical structureOnly 14 pages are availabe for public view
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Abstract
Cotton, Gossypium barbadense L. is considered one of the principal economic crops in Egypt and the world as well. It is attacked by several insect pests during the growing season. In Egypt, the major insects are aphids, Aphis gossypii Glover; cotton leaf worm, Spodoptera littoralis (Boisd) and bollworms; Pectinophora gossypilla (Saund.) and Earias insulana (Boisd.) resulting in severe losses of yield quality and quantity. The extensive use of insecticides to control these insects resulted in many problems like insect resistance to many pesticides, pest resurgence and destruction of natural enemies. Therefore, it is necessary to seek a safe tool to control these insects. The induced plant resistance to herbivores has received a great deal of attention as inducible resistance plays a major role in the effects on herbivorous insects. However, the aim of this study is reducing the use of insecticides and increases the resistance of cotton plants to insects by using chemical inducers before insecticides application. The tested compounds as inducers of plant resistance to certain insects were imidacloprid at low rates (1.5, 2.5 g/kg seed) at sowing and 0.18, 0.37g/L water at flowering stage and hydrogen peroxide (40, 80 m mole) at sowing and flowering stage. This study contained laboratory experiments which were carried out at laboratory of Plant Protection Research Institute, Sakha, Kafr El-Sheikh under controlled conditions in addition to field experiments during two seasons of cotton (variety Giza,86) 2015 and 2016 at the Experimental Farm of Sakha Agricultural Research Station. Hence, the present study was carried out to study the following points: