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Control of Annual Broadleaf Weeds in Pinto Beans (Phaseolus vulgaris)

Published online by Cambridge University Press:  12 June 2017

Robert E. Blackshaw  and
Rudy Esau
Robert E. Blackshaw
Affiliation:
Agric. Canada Res. Stn., Lethbridge, AB, Canada T1J 4B1
Rudy Esau
Affiliation:
Agric. Canada Res. Stn., Lethbridge, AB, Canada T1J 4B1
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Abstract

Field studies were conducted to identify herbicides suitable for improved control of hairy nightshade, redroot pigweed, and common lambsquarters in pinto beans. Fomesafen at 0.25 kg ai ha-1 did not adequately control these weeds. Clomazone at 0.5 kg ai ha-1 controlled common lambsquarters but only suppressed the growth of redroot pigweed and hairy nightshade. Ethalfluralin at 0.84 to 1.1 kg ai ha-1 gave excellent initial control of these weeds but did not control later flushes of hairy nightshade. Imazethapyr applied PPI or POST at 50 to 75 g ai ha-1 controlled hairy nightshade, redroot pigweed, and common lambsquarters throughout the growing season. Imazethapyr combined with ethalfluralin gave superior weed control and resulted in greater yields than the most commonly used herbicides in pinto beans in western Canada.

Keywords

Bentazon, 3-(1-methylethyl)-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxideclomazone, 2-[(2-chlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinoneEPTC, S-ethyl dipropylcarbamothioateethalfluralin, N-ethyl-N-(2-methyl-2-propenyl)-2,6-dinitro-4-(trifluoromethyl)benzenaminefomesafen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-N-(methylsulfonyl)-2-nitrobenzamideimazethapyr, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidpinto beans, Phaseolus vulgaris L. ‘Pinto UI 111’common lambsquarters, Chenopodium album L. ♯ CHEALhairy nightshade, Solanum sarrachoides Sendtner ♯ SOLSAredroot pigweed, Amaranthus retroflexus L. ♯ AMARECrop toleranceseed yieldherbicide interactiontank mixturesresidual weed controlbentazonclomazoneEPTCethalfluralinfomesafenimazethapyrAMARECHEALSOLSA
Type
Research
Information
Weed Technology , Volume 5 , Issue 3 , September 1991 , pp. 532 - 538
Copyright
Copyright © 1991 Weed Science Society of America 

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References

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