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Weed Management in Two Potato (Solatium tuberosum) Cultivars Using Tillage and Pendimethalin

Published online by Cambridge University Press:  12 June 2017

Donald C. Nelson
Affiliation:
Dep. Hortic. For., North Dakota State Univ., Fargo, ND 58105
Joseph F. Giles
Affiliation:
Dep. Soil Sci., North Dakota State Univ., Fargo, ND 58105

Abstract

Tillage and pendimethalin either alone or in combination were compared for weed management in two potato cultivars. The best weed management program consisted of a combination of pendimethalin and tillage. Pendimethalin alone did not adequately control weeds. Multiple cultivations gave better control than pendimethalin alone but not as good as pendimethalin and cultivation combined. The net returns using tillage, pendimethalin, and tillage plus pendimethalin for weed control averaged –$86, –$208, and $ 143/ha, respectively. Independent of their effect on weeds, cultivation had a significant negative effect and pendimethalin a significant positive effect on potato yields. Each cultivation reduced yields by 1.7% and pendimethalin increased yields by 4%. The cultivar ‘Red Pontiac’ was a better competitor with weeds than ‘Red Norland’.

Type
Weed Control and Herbicide Technology
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

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