ارزيابي كارآيي مديريت تلفيقي (شيميايي + مكانيكي) علف هاي هرز در ذرت (هيبريد سينگل كراس 704)

Evaluation of integrated weed management efficiency (chemical+mechanical) in corn (Zea mays cv. S. C 704)

In order to evaluate of integrated weed management efficiency, a comprehensive study was conducted in Research Field of Shushtar Islamic Azad University in the summer of 2006. The experimental design was randomized complete block (RCBD) with 4 replications. Treatments were 8 different combinations as Atrazin + Lasso, Atrazin + Lasso+one time cultivator + 24D, Atrazin+Lasso+two times cultivator, Eradican, Eradican + one time cultivator + 24D, Eradican + two times cultivator, one time cultivator + 24D, two times cultivator + 24D with two control treatments, consisted of free control weeds and complete control weeds. Atrazine, Lasso and eradican applied as pre-sowing and 24D applied in 2-5 leaf stage. Cultivator treatments were used 15 and 25 days after applying 2.4D, respectively. Corn grain yield and yield-related traits as total dry weight and yield components were significantly affected by the treatments. The highest grain yield was obtained in T3 with 11800 kg per hectar. Our results indicated that integrated methods of weed management are more efficient than chemical and mechanical ones.