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Tebuthiuron Effects on Elemental Nutrients in Blue Grama (Bouteloua gracilis) Forage

Published online by Cambridge University Press:  12 June 2017

Thomas N. Johnsen Jr.*
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., 2000 E. Allen Rd., Tucson, AZ 85719

Abstract

Tebuthiuron has been found in soils and plants a decade after application to rangelands in semi-arid areas. Forage production, length of growing season, and preference by grazing animals are greater on treated than on untreated areas. It is not understood how these differences occur. Blue grama forage was assayed for concentrations of N, P, K, Ca, Cu, Fe, Mg, Mn, and Zn in treated and untreated plants on adjacent paired plots in the field, 6 to 11 yr after tebuthiuron applications at three locations in Arizona. Only Fe and Mn concentration differed among treatments, being significantly higher (P = 0.05) in blue grama from treated plots.

Information

Type
Research
Copyright
Copyright © 1990 by the Weed Science Society of America 

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