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Efficacy of Asana XL Tank Mixed with New Chemistry for Heliothine Control in Cotton

Jack Reaper, III, John D. Hopkins, Donald R. Johnson and Gus M. Lorenz, III


ABSTRACT

As Heliothine resistance to pyrethroid insecticides becomes more common, cotton producers are constantly searching for economic pest management options while utilizing the latest technology. This experiment was conducted to evaluate the efficacy of Asana XL, a pyrethroid, when tank mixed with newer, non-pyrethroid insecticides for Heliothine control in cotton. Low populations of tobacco budworm (Heliothis virescens) caused few significant differences between treatments. No differences in square damage, live larvae, or lint yield were observed between Steward, Tracer, Denim, or S-1812 when used alone or in combination with Asana XL. Equal levels of Heliothine control where achieved using labeled rates of all insecticides, including Asana XL, with the exception of Intrepid. Lack of significance among treatments indicates satisfactory performance of Asana XL tank mixed with reduced rates of newer insecticides. However, results may vary in years with greater tobacco budworm pressure, a species known to be resistant to pyrethroid insecticides.





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Document last modified May 20, 2002