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Fertilizer Shank Placement Impact on Atrazine Movement in a Ridge Tillage System

Published online by Cambridge University Press:  12 June 2017

Sharon A. Clay ,
Kimberly A. Scholes  and
David E. Clay
Sharon A. Clay
Affiliation:
Plant Sci. Dep., South Dakota State Univ., Brookings, SD 57007
Kimberly A. Scholes
Affiliation:
Plant Sci. Dep., South Dakota State Univ., Brookings, SD 57007
David E. Clay
Affiliation:
Plant Sci. Dep., South Dakota State Univ., Brookings, SD 57007
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Abstract

Surface microrelief and agrichemical placement influence agrichemical movement through soil. This study determined if anhydrous ammonia shank placement influenced atrazine movement in a ridge tillage system. Atrazine and Br− were broadcast over the plot or banded on the ridge while N fertilizer was Injected into the ridge or valley. Rainfall (17 cm) was applied and leachate was collected incrementally from grid lysimeters placed 75 cm below the soil surface. Amounts of atrazine and Br− in leachate and postrainfall soil atrazine distribution were determined. The injection slot created by fertilizer application influenced chemical movement. When atrazine and the fertilizer injection slot overlapped, atrazine movement through the soil was enhanced. These data suggest that herbicide applications and fertilizer injection slots that are not covered should not overlap due to increased potential for movement.

Keywords

Atrazine, 6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diamineHerbicide movementherbicide leaching potential
Type
Soil, Air, and Water
Information
Weed Science , Volume 42 , Issue 1 , March 1994 , pp. 86 - 91
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

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