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Effects of Imazethapyr and Pendimethalin on Lentil (Lens culinaris), Pea (Pisum sativum), and a Subsequent Winter Wheat (Triticum aestivum) Crop

Published online by Cambridge University Press:  20 January 2017

Bradley D. Hanson  and
Donald C. Thill
Bradley D. Hanson
Affiliation:
Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID 83843-2339
Donald C. Thill
Affiliation:
Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID 83843-2339
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Abstract

Lentil and pea are two important crops grown in rotation with winter wheat in the Palouse region of Idaho and Washington. Imazethapyr plus pendimethalin often is used to control weeds in lentil and pea, but the effects of these herbicides on these crops and the subsequently planted winter wheat crop are not well known. The component and combined effects of several rates of imazethapyr and pendimethalin on growth and yield of lentil and pea and the subsequently planted winter wheat crop were measured in 1997 and 1998 field experiments. No herbicide treatment reduced lentil or pea biomass or seed yield compared with the untreated control. Wheat biomass was reduced 35 to 51%, and grain yield was reduced 11 to 17% in all plots treated with 2,240 g/ha pendimethalin at the lentil hilltop site. Imazethapyr at 106 g/ha plus 1,120 g/ha pendimethalin also reduced wheat biomass 24% at the lentil hilltop site. Wheat was not injured at other sites or by other treatments at the lentil hilltop site.

Keywords

Imazethapyrpendimethalinlentil, Lens culinaris L.pea, Pisum sativum L.wheat, Triticum aestivum L.Herbicide persistencerotational crop safetyDAP, days after plantingDAT, days after treatmentPPI, preplant incorporated
Type
Note
Information
Weed Technology , Volume 15 , Issue 1 , March 2001 , pp. 190 - 194
Copyright
Copyright © Weed Science Society of America 

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