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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
Vol. 12, No. 3 (Jul., 1964), pp. 211-215
Stable URL: http://www.jstor.org/stable/4040732
Page Count: 5
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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.
Weeds © 1964 Weed Science Society of America