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Response of MSMA-Resistant and -Susceptible Common Cocklebur (Xanthium strumarium) Biotypes to Cotton (Gossypium hirsutum) Herbicides and Cross-Resistance to Arsenicals and Membrane Disruptors
Chandrashekhar I. Nimbal, David R. Shaw, Stephen O. Duke and John D. Byrd, Jr.
Vol. 9, No. 3 (Jul. - Sep., 1995), pp. 440-445
Stable URL: http://www.jstor.org/stable/3987653
Page Count: 6
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Experiments were conducted to evaluate PRE and POST cotton herbicides for control of MSMA-resistant (R) and -susceptible (S) common cocklebur biotypes, and to determine potential cross-resistance of the R biotype to other arsenical and membrane disruptor herbicides. Cyanazine and clomazone applied PRE were the most effective herbicides for control of R populations. Lactofen or cyanazine in combination with MSMA controlled R and S biotypes better than fluometuron or pyrithiobac combined with MSMA. MSMA-resistant common cocklebur was not cross-resistant to other arsenical herbicides. Significant differences in cellular electrolyte leakage and chlorophyll content of the treated leaf between biotypes were not evident for paraquat, acifluorfen, and MSMA.
Weed Technology © 1995 Weed Science Society of America