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Effects of Crop Residue Management and Tillage on Weed Control and Sugarcane Production

Published online by Cambridge University Press:  20 January 2017

Wilson E. Judice
Affiliation:
Department of Agronomy and Environmental Management, LSU AgCenter, 104 Sturgis Hall, Baton Rouge, LA 70803
James L. Griffin*
Affiliation:
Department of Agronomy and Environmental Management, LSU AgCenter, 104 Sturgis Hall, Baton Rouge, LA 70803
Luke M. Etheredge Jr.
Affiliation:
Department of Agronomy and Environmental Management, LSU AgCenter, 104 Sturgis Hall, Baton Rouge, LA 70803
Curtis A. Jones
Affiliation:
Department of Agronomy and Environmental Management, LSU AgCenter, 104 Sturgis Hall, Baton Rouge, LA 70803
*
Corresponding author's E-mail: jgriffin@agcenter.lsu.edu

Abstract

Research was conducted to evaluate the residual effect of burning and mechanical removal of sugarcane crop residue on weed control and sugarcane growth and yield. In one study, crop residue was removed in December or January within 3 wk after sugarcane harvest. Mechanical removal of residue from the row top and placement in the row middle using a Sunco Trash Tiger® was compared with burning and a no removal control. Superimposed on each residue removal treatment was tillage of row sides and middles in March and in May and a no-tillage program. Tillage efficiency in March when sugarcane was emerging from the winter dormant period was not negatively affected when residue was removed mechanically. Crop residue on the soil surface did not completely suppress winter weed emergence and growth. Based on sugarcane and sugar yield averaged across locations and tillage programs, mechanical removal of residue was as effective as burning. Sugar yield was reduced 7.9% when residue was not removed from the row top compared with burning or mechanical removal. In another study, crop residue of sugarcane harvested in early December was burned or removed mechanically from the row top 4 d after harvest and also mechanically in January, February, or March. Crop residue ground cover of 79% in March on the row top where residue was not removed provided some suppression of winter weeds. Sugarcane shoot population in April was reduced 16.1% when residue removal was delayed until March compared with December. Averaged across tillage and no-tillage treatments in March, sugarcane yield did not differ when residue was removed by burning in December compared with mechanical removal in December or January. Delaying mechanical removal of residue until February or March compared with residue removal in December decreased sugar yield an average of 13.1%.

Type
Research
Copyright
Copyright © Weed Science Society of America 

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