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Weed Control in No-tillage and Conventional Corn (Zea mays) with ICIA-0051 and SC-0774

Published online by Cambridge University Press:  12 June 2017

John S. Wilson  and
Chester L. Foy
John S. Wilson
Affiliation:
Dep. Plant Pathol., Physiol., Weed Sci., Va. Polytech. Inst. State Univ., Blacksburg, VA 24061
Chester L. Foy
Affiliation:
Dep. Plant Pathol., Physiol., Weed Sci., Va. Polytech. Inst. State Univ., Blacksburg, VA 24061
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Abstract

Field studies were conducted over a four-year period to determine the weed control efficacy of ICIA-0051 and SC-0774 in no-tillage and conventional corn. Treatments consisted of both pre- and postemergence applications of ICIA-0051, alone and in combination with atrazine, and preemergence applications in combination with metolachlor. SC-0774 was applied preemergence, alone and in combination with atrazine. Results indicated good control of triazine-resistant (TR) smooth pigweed and other annual broadleaf weeds present with no adverse effects on crop vigor and yield with ICIA-0051. Generally, the addition of atrazine to ICIA-0051 improved weed control. SC-0774 provided good control of fall panicum, but generally poorer and less consistent control of giant ragweed, common ragweed, common lambsquarters, and ivyleaf and tall morningglory species.

Keywords

Atrazine, 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-methylethyl)acetamideICIA-0051 (formerly SC-0051), 2-[2-chloro-4-(methylsulfonyl)benzoyl)-1,3-cyclohexanedioneSC-0774, 4,4-dimethyl-2-[2-(nitro)benzoyl]-1,3-cyclohexanedionecommon lambsquarters, Chenopodium album L. ♯3 CHEALcommon ragweed, Ambrosia artemisiifolia L. ♯ AMBELfall panicum, Panicum dichotomiflorum Michx. ♯ PANDIgiant ragweed, Ambrosia trifida L. ♯ AMBTRivyleaf morningglory, Ipomoea hederacea (L.) Jacq. ♯ IPOHEsmooth pigweed, Amaranthus hybridus L. ♯ AMACHtall morningglory, Ipomoea purpurea (L.) Roth. ♯ PHBPUcorn, Zea mays L.Oil concentrateAgri-DexTween 20adjuvantCHEALAMBELPANDIAMBTRIPOHEAMACHPHBPU
Type
Research
Information
Weed Technology , Volume 4 , Issue 4 , December 1990 , pp. 731 - 738
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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