تأثيـــر المكافحة الكيميائية لحفار ســـــاق الذرة Sesamia cretica Led. في نمو وإنتاجية محصول الذرة الصفراء Zea mays L. في محافظة القادسية

Abstract

Abstract: A field experiment was conducted at AL Sanyah / ALQadissiyah Governorate during autumn season of 2009, with aim of studying the effect of insecticides application methods (Control , Diazinon, Actara and Trigard ) and Irrigation spray. After month of planting in experiment factorial R.C.B.D.The results showed that the Actara application has significant effect on the plant height, leaf area ,the percentage of lowest infection, weight of 300 seed and grain yield / plant. The average was (125.66) cm,(4827) cm2, (7.43%),(86.13) gm and (113.03) gm/planet The results also showed that the application method also has significant effect on the percentage of the infection during the harvesting time. The interaction between the insecticides and the method of application caused signification variation on the leaf area/ plant, plant yield and the lowest percentage of infection of corn stem borer.