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Influence of Tillage, Row Spacing, and Atrazine on Sorghum and Weed Yields from Nonirrigated Sorghum across Nebraska

O. C. Burnside, G. A. Wicks and C. R. Fenster
Weeds
Vol. 12, No. 3 (Jul., 1964), pp. 211-215
DOI: 10.2307/4040732
Stable URL: http://www.jstor.org/stable/4040732
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Influence of Tillage, Row Spacing, and Atrazine on Sorghum and Weed Yields from Nonirrigated Sorghum across Nebraska
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Abstract

Experiments were conducted at Lincoln, North Platte, and Alliance, Nebraska, during 1961 and 1962 to determine the effect of tillage, atrazine, hand-weeding, and row spacings on RS 501 sorghum and weed yields. Combinations of tillage, narrow row spacings, and preemergence 2-chloro-4-ethylamino-6-isoproplyamino-s-triazine (atrazine) treatments gave more dependable weed control than any one alone. Sorghum yields increased and weed yields decreased with tillage and atrazine treatments. Preemergence atrazine applications as low as 1 lb/A gave higher sorghum yields and lower weed yields than postemergence atrazine applications of 2 to 4 lb/A. Preemergence atrazine applications should be reduced on lighter soils because atrazine gives more effective weed control and increased sorghum injury on such soils. There was a 1 bu/A decrease in sorghum yield for each 50 lb/A of weeds present.

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