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Title: EVALUATION OF ZA 1296 AND OTHER HERBICIDES IN CORN

Author
item MAXWELL, DOUGLAS - UNIV OF ILLINOIS
item Wax, Loyd

Submitted to: Research Report North Central Weed Science Society United States
Publication Type: Other
Publication Acceptance Date: 12/8/2000
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: The objective of this research was to evaluate the weed efficacy and crop tolerance of ZA 1296 and other herbicides in corn. The study was established at the University of Illinois Crop Sciences Research and Education Center, Urbana. The soil was a Flanagan silt loam with a pH of 6.3 and 4.7% organic matter. Pioneer 33G27 corn was planted 2 inches deep on April 28 in 30 inch rows. Treatments were arranged in randomized complete blocks with three replications of plots 10 by 36 feet. Herbicides were applied with a CO2 backpack sprayer delivering 20 gpa and equipped with 8003 flat fan nozzles. Corn tolerance to all herbicide treatments was excellent at each evaluation timing and application. Control of giant foxtail was excellent for many treatments, with several exceptions being ICIA 5676&ZA 1296 at 1.75 lb/A, dimethenamid & atrazine at 2.8 lb/A, s-metolachlor & atrazine & CGA 154281 at 2.89 lb/A, acetochlor & atrazine & dichlormid at 3.3 lb/A with 0.094 lb/A ZA 1296, and s-metolachlor & atrazine & CGA 154281 at 2.89 lb/A with 0.094 lb/A ZA 1296. Control of Pennsylvania smartweed, common lambsquarters, and common ragweed was excellent for all treatments. Velvetleaf control was significantly lower for the atrazine packaged treatments alone, while the addition ZA 1296 preemergence or postemergence was excellent. Yields were all similar to slightly under the hand weeded check treatment, with the untreated check also yielding well due to the excellent growing conditions.