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Thidiazuron Effects on Malvaceae, Corn, Zea mays; and Soybean, Glycine max

Published online by Cambridge University Press:  12 June 2017

Richard H. Hodgson
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Foreign Dis.-Weed Sci. Res., Bldg. 1301, Ft. Detrick, Frederick, MD 21701
Robert H. Snyder
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Foreign Dis.-Weed Sci. Res., Bldg. 1301, Ft. Detrick, Frederick, MD 21701

Abstract

The growth of two mallow family weeds, velvetleaf and prickly sida, was inhibited 50% when seedlings were treated with less than 200 g ai/ha of thidiazuron. Spurred anoda was unaffected by treatment with up to 1120 g/ha of thidiazuron. Cotton, okra, and hibiscus, all in the mallow family, also were susceptible to thidiazuron treatment. Leaf development in 2-week-old cotton seedlings was inhibited 20% by less than 35 g/ha thidiazuron as were seedling okra and hibiscus. Plants of all these susceptible species were more resistant when grown for 2 months before treatment. Seedlings of soybean displayed localized injury after treatment, but plant height, biomass, and seed production were not significantly affected 10 weeks after treatment with up to 1120 g/ha thidiazuron. Seedlings of corn appeared unaffected by treatment with up to 1120 g/ha thidiazuron.

Type
Research
Copyright
Copyright © 1988 by the Weed Science Society of America 

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