Sorghum growth as affected by annual applications of atrazine

Burnside, O.C. and Moomaw, R.S. (1975) Sorghum growth as affected by annual applications of atrazine. Weed Science, 23 (6). pp. 494-498.

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Soil carry-over of atrazine following annual applications to a sorghum monoculture was studied by assessing sorghum yield factors as well as yields of a subsequent bioassay crop of oats. Atrazine applications of 3.4 kg/ha or more increased sorghum injury and rates of 4.5 kg/ha and more increased seed weight and decreased stand. Sorghum recovered from early atrazine injury and stand loss and generally maintained yields. Rates of 2.2 kg/ha did not reduce sorghum yields even with repeated annual usage. There appears to be little risk of reducing sorghum yields due to atrazine carry-over in the soil from annual atrazine applications made at normal rates to a clay loam or silty clay loam soil in eastern Nebraska. However, atrazine carry-over will have to be a consideration if the grower plans to rotate to a susceptible crop such as oats. From summary

Item Type: Article
Author Affiliation: Department of Agronomy, University of Nebraska, Lincoln, 68503, USA
Subjects: Plant Production
Plant Protection
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 07 Sep 2012 08:28
Last Modified: 07 Sep 2012 08:30

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