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Title: EVALUATION OF METOLACHLOR APPLICATION TIMINGS IN CONVENTIONAL AND NO-TILL CORN. DEKALB, ILLINOIS, 1996

Author
item SIMMONS, F - UNIV OF ILLINOIS
item Wax, Loyd
item HART, STEPHEN - UNIV OF ILLINOIS
item MAXWELL, DOUGLAS - UNIV OF ILLINOIS

Submitted to: Research Report North Central Weed Science Society United States
Publication Type: Other
Publication Acceptance Date: 12/20/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: The purpose of this experiment was to evaluate giant foxtail control with metolachlor applied at various application timings in both conventional and no-tillage corn. The study was established at the Northern Illinois Agronomy Research Farm, Dekalb, Illinois. The soil type was a Drummer silty clay loam with a pH of 6.4 and 6.0% organic matter. Pioneer 3394 corn was planted 1.5 inches deep on May 18 in 30 inch rows. Treatments were arranged in randomized complete blocks with 3 replications of plots 10 by 33 feet. Herbicides were applied with a CO2 backpack sprayer delivering 20 gpa and equipped with 8003 flat fan nozzles. A burndown application of 0.56 lb/A of glyphosate, 0.5 lb/A 2,4-D, and 0.5% Activate Plus was applied May 14 to the no-till areas. A broadcast application of dicamba at 0.5 lb/A was applied early postemergence for broadleaf weed control on June 16. Giant foxtail control was excellent with preemergence application of chloroactamide herbicides. Giant foxtail control tended to be lower when metolachlor was applied Fall or 30 days early preplant. Fall and 30 days early preplant metolachlor tended to perform better in no-till compared to conventional till.