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Postemergence Weed Control in Potatoes (Solanum tuberosum) with Rimsulfuron

Published online by Cambridge University Press:  12 June 2017

Charlotte V. Eberlein ,
James C. Whitmore ,
Charles E. Stanger  and
Mary J. Guttieri
Charlotte V. Eberlein
Affiliation:
Dep. Plant, Soil, Entomol. Sci., Univ. Idaho, Aberdeen, ID 83210
James C. Whitmore
Affiliation:
Tetonia Res. and Ext. Cent., Newdale, ID 83436
Charles E. Stanger
Affiliation:
Oregon State Univ., Malheur Exp. Stn., Ontario, OR 97914
Mary J. Guttieri
Affiliation:
Univ. Idaho, Aberdeen, ID 83210
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Abstract

Greenhouse and field studies were conducted to examine weed control with, and potato tolerance to, rimsulfuron or rimsulfuron + metribuzin applied POST. In greenhouse trials, hairy nightshade control with rimsulfuron applied POST at 9 to 35 g/ha was ≥ 90%, but cutleaf nightshade control was < 30%. In field studies, rimsulfuron at 18 to 35 g/ha provided ≥ 85% control of hairy nightshade, redroot pigweed, tumble pigweed, and shepherd's-purse; 75 to 82% control of volunteer oats; and 25 to 87% control of common lambsquarters. Common lambsquarters control was increased to 92 to 100% when rimsulfuron at 18 to 35 g/ha was applied in combination with metribuzin at 280 g/ha. Hairy nightshade and redroot pigweed control usually were not improved by adding metribuzin to the rimsulfuron spray mixture and tumble pigweed and shepherd's-purse control were improved only slightly. Volunteer oat control with rimsulfuron sometimes was antagonized by the addition of metribuzin to the spray mixture. In weed-free trials, yield of potatoes grown for the fresh market or to produce seed tubers was not reduced by rimsulfuron at rates as high as 70 g/ha.

Keywords

Metribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methythio)-1,2,4-triazin-5(4H)-onerimsulfuron, N-[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]-3-(ethylsulfonyl)-2-pyridinesulfonamidehairy nightshade, Solanum sarrachoides Sendtner # SOLSAcutleaf nightshade, Solanum triflorum Nutt. # SOLTRcommon lambsquarters, Chenopodium album L. # CHEALredroot pigweed, Amaranthus retroflexus L. # AMAREtumble pigweed, Amaranthus albus L. # AMAALshepherd's-purse, Capsella bursa-pastoris (L.) Medicus # CAPBPvolunteer oat, Avena sativa L.potato, Solanum tuberosum L. ‘Russet Burbank.’Herbicide injuryAmaranthus albusAmaranthus retroflexusCapsella bursa-pastorisChenopodium albumSolanum sarrachoidesSolanum triflorumAvena sativaAMAALAMARECAPBPCHEALSOLSASOLTR
Type
Research
Information
Weed Technology , Volume 8 , Issue 3 , September 1994 , pp. 428 - 435
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

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