Palmer amaranth (Amaranthus palmeri) and devil's-claw (Proboscidea louisianica) control in cotton (Gossypium hirsutum) with pyrithiobac Academic Article

abstract

• Field experiments conducted in 1991, 1992, and 1993 evaluated Palmer amaranth and devil's-claw control and cotton injury with pyrithiobac applied PPI, PRE, or POST. Pyrithiobac at 36 or 71 g ae/ha applied PPI, PRE, or POST did not injure cotton. Pyrithiobac at 140 g/ha applied PPI or PRE injured cotton 9 to 11% 6 wk after treatment. Cotton recovered and no injury was observed 12 wk after treatment. Pyrithiobac applied PPI and PRE at 71 g/ha controlled Palmer amaranth at least 97% 6 wk after treatment. Palmer amaranth control with pyrithiobac applied POST was more variable and influenced by environmental conditions. Palmer amaranth control with 71 g/ha of pyrithiobac exceeded that with 36 g/ha. Devil's-claw control with pyrithiobac was better with POST applications than PPI or PRE applications. Pyrithiobac applied POST at 140 g/ha controlled devil's-claw 8397%. These studies indicate that pyrithiobac can effectively control Palmer amaranth and devil's-claw in cotton on the Texas Southern High Plains when applied at appropriate rates and timings.

authors

• Dotray, Peter
• Keeling, Wayne

published proceedings

• WEED TECHNOLOGY

author list (cited authors)

• Dotray, P. A., Keeling, J. W., Henniger, C. G., & Abernathy, J. R.

citation count

• 45

complete list of authors

• Dotray, PA||Keeling, JW||Henniger, CG||Abernathy, JR

publication date

• March 1996

publisher

• Cambridge University Press (CUP)  Publisher

published in

• Weed Technology  Journal

keywords

• Amapa
• Application Rate
• Cotton Injury
• Postemergence
• Preemergence
• Preplant Incorporated
• Prolo

Digital Object Identifier (DOI)

• 10.1017/S0890037X00045632

start page

• 7

end page

• 12

volume

• 10

issue

• 1

URL

• http://dx.doi.org/10.1017/s0890037x00045632