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Effect of Imazethapyr on Legumes and the Effect of Legumes on Weeds

Published online by Cambridge University Press:  12 June 2017

Robert G. Wilson
Robert G. Wilson*
Affiliation:
Dep. Agron., Univ. of Nebraska, Scottsbluff. NE 69361
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Abstract

A three-year experiment was conducted near Scottsbluff, NE, to evaluate the selectivity of POST-applied imazethapyr for weed control in alfalfa, birdsfoot trefoil, cicer milkvetch, red clover, sainfoin, and yellow sweetclover. Imazethapyr injured all legumes 15 DAT. Imazethapyr also reduced the height of birdsfoot trefoil, cicer milkvetch, red clover, and yellow sweeclover 28 DAT. Legume first cutting yields were not reduced by imazethapyr and with alfalfa, birdsfoot trefoil, cicer milkvetch, and sainfoin, first cutting yields were increased by imazethapyr. Imazethapyr reduced weed biomass in all legume seedings. Weed biomass in new seedings of alfalfa was reduced more than that of the other legumes.

Keywords

Imazethapyr, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidalfalfa, Medicago sativa L.birdsfoot trefoil, Lotus corniculatus L.cicer milkvetch, Astragalus cicer L.red clover, Trifolium pratense L.sainfoin, Onobrychis viciaefolia Scop.yellow sweetclover, Melilotus officinalis (L.) Lam.Plant competitionAstragalus cicerLotus corniculatusMedicago sativaMelilotus officinalisOnobrychis viciaefoliaTrifolium pratense
Type
Research
Information
Weed Technology , Volume 8 , Issue 3 , September 1994 , pp. 536 - 540
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

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