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Subsurface Placement Methods for Metribuzin and Trifluralin

Published online by Cambridge University Press:  12 June 2017

Mustafa A. Khalifa ,
Howard D. Wittmuss  and
Orvin D. Burnside
Mustafa A. Khalifa
Affiliation:
Univ. of Nebraska
Howard D. Wittmuss
Affiliation:
Dep. of Agric. Eng.; Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
Orvin D. Burnside
Affiliation:
Dep. of Agric. Eng.; Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
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Abstract

Metribuzin [4-ammo-6-tert-butyl-3-(methylthio)-as-triazin-5(4H)-one] at 0.4 kg ai/ha controlled rape (Brassica hitra Moench. # SINAL) when applied 2.5 to 10 cm deep in a horizontal layer or in lines 1 to 4 cm apart. Trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) at 0.8 kg ai/ha did not control ‘Rox Orange’ forage sorghum [Sorghum bicolor (L.) Moench. # SORVU] satisfactorily when applied in a subsurface layer, in lines, or in vertical bands 1, 2, and 3 cm apart up to 10 cm deep. Applications of trifluralin at 1.1 kg ai/ha in vertical bands followed by 0.6 kg ai/ha mixed in the surface 2.5 cm controlled forage sorghum as well as or better than surface application followed by incorporation. The combined subsurface and surface trifluralin placement systems were effective for application depths up to 7.5 cm and band spacings up to 2 cm wide. The development of effective subsurface herbicide injection systems would make the use of herbicides requiring incorporation feasible in reduced tillage crop production systems.

Keywords

Conservation tillageherbicide incorporationmetribuzinreduced tillagesweep plowtrifluralinSINALSORVU
Type
Research Article
Information
Weed Science , Volume 31 , Issue 6 , November 1983 , pp. 840 - 844
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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