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Roller Applicator for Shattercane (Sorghum bicolor) Control in Row Crops

Published online by Cambridge University Press:  12 June 2017

Gregory L. Schneider ,
Curt B. Koehler ,
James S. Schepers  and
Orvin C. Burnside
Gregory L. Schneider
Affiliation:
Soil Sci., Agric. Res. Serv., U.S. Dep. Agric.
Curt B. Koehler
Affiliation:
Soil Sci., Agric. Res. Serv., U.S. Dep. Agric.
James S. Schepers
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
Orvin C. Burnside
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
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Abstract

Greenhouse and field experiments were conducted with a roller applicator at Lincoln, Nebraska, during 1979 and 1980. Glyphosate [N-(phosphonomethyl)glycine] concentrations of 5, 10, and 20% and carpet saturations of 50 and 75% controlled shattercane [Sorghum bicolor (L.) Moench] when applied to the top 30 cm of the plant in greenhouse research. In the field, glyphosate concentrations of 5 to 20% with a carpet saturation of 50% controlled shattercane acceptably in soybeans [Glycine max (L.) Merr.], but a concentration of 2.5% with 25% carpet saturation did not. Weed control was comparable whether speed of application was 3.2, 6.4, or 9.6 km/h. Shattercane control in grain sorghum [Sorghum bicolor (L.) Moench.] was excellent at glyphosate concentrations of 5, 10, and 20% and at carpet saturations of 50 and 75%, and sorghum injury was minimal at 25 and 50% carpet saturations. The roller applicator was compared to a ropewick applicator for shattercane control in sorghum. Excellent weed control (90% or greater) with minimal crop injury was obtained with the roller applicator at glyphosate concentrations of 10 and 20% at application speeds of 3.2 and 6.4 km/h and with the ropewick applicator with glyphosate concentrations of 35 and 50% applied at 3.2, 6.4, and 9.6 km/h.

Keywords

Glycine maxropewick applicatorselective weed controlweed escapesglyphosate
Type
Research Article
Information
Weed Science , Volume 30 , Issue 3 , May 1982 , pp. 301 - 306
Copyright
Copyright © 1982 by the Weed Science Society of America 

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References

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