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Influence of Tillage Systems on Giant Foxtail, Setaria faberi, and Velvetleaf, Abutilon theophrasti, Density and Control in Corn, Zea mays

Published online by Cambridge University Press:  12 June 2017

Douglas D. Buhler  and
Tommy C. Daniel
Douglas D. Buhler
Affiliation:
Dep. Soil Sci., Univ. Wisconsin, Madison, WI 53706
Tommy C. Daniel
Affiliation:
Dep. Soil Sci., Univ. Wisconsin, Madison, WI 53706
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Abstract

Giant foxtail density in corn was greater under no-till and chisel plow tillage systems than conventional or till plant. Giant foxtail density in no-till was 1400 shoots/m2 56 days after corn planting compared to 170 under conventional tillage. Velvedeaf density was greater under conventional tillage than all other tillage systems. Velvetleaf density was 120 plants/m2 56 days after corn planting under conventional tillage compared to 20 in no-till. Control of giant foxtail was often less under no-till or chisel plow conditions than conventional or till plant with the same herbicide treatment. Giant foxtail control with metolachlor treatments was affected less by tillage than similar treatments containing alachlor. Velvedeaf control was less with conventional tillage than other tillage systems when less than 1.7 kg/ha of atrazine was applied. Corn injury was not influenced by tillage systems. Corn yield was not affected by tillage systems under weed-free conditions. Several herbicide treatments resulted in corn yield similar to the weed-free under conventional tillage, but no herbicide treatment produced corn yield similar to the weed-free control under no-till conditions.

Keywords

Alachlor, 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl) acetamideatrazine, 6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diaminemetolachlor, 2-chloro-N-(2-ethyl-6 - methylphenyl) - N- (2- methoxy -1 - methylethy1)acetamidecorn, Zea mays L. ‘Hughes 5302’giant foxtail, Setaria faberi Herrm. #3 SETFAvelvetleaf, Abutilon theophrasti Medik. # ABUTHAlachloratrazineconservation tillagecyanazinemetolachlorno-tillpendimethalinABUTHSETFA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 36 , Issue 5 , September 1988 , pp. 642 - 647
Copyright
Copyright © 1988 by the Weed Science Society of America 

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