Composition and method of using fungicides for inhibiting induce

Details Composition and method of using fungicides for inhibiting induce Composition and method of using fungicides for inhibiting induce

1997-01-02

1997-09-23

Clardy, S. Mark

Plant protecting and regulating compositions

Antidotes

504107, A01N 2532, A01N 4350

Patent

active

056704500

ABSTRACT:
A previously unsuspected cause of herbicide-induced phytotoxicity in rice is disclosed, as is a successful treatment for the problem. Fungi are responsible for dehalogenating halogenated aromatic herbicides. The dehalogenated aromatic compounds then cause serious injury to growing rice plants. The problem has been overcome by treating the herbicide with a fungicide. When fungal metabolism of the herbicide is thus inhibited, the herbicide is not dehalogenated, and the herbicide does not injure rice plants. In a preferred embodiment, the fungicide iprodione was impregnated onto the herbicide thiobencarb, greatly reducing the induced phytotoxicity of the herbicide thiobencarb, without substantially affecting the desired herbicidal activity of thiobencarb.

REFERENCES:
patent: 4749406 (1988-06-01), Martin
Phatak et al., "Growth Regulators, Fungicides, and other Agrochemicals as Herbicide Safeners," pp. 299-315 in K. Hatzios et al. (eds.), Crop Safeners for Herbicides (1989).
M. Ogawa et al., "Effects of 3-Hydroxy-5-methylisoxazole on the Reduction of Herbicide Injury to Rice Seedlings," pp. 303-306 in Proc. Asian-Pac. Weed Sci. Soc. Conf., 5th (1975).
S. Aust, "Degradation of Environmental Pollutants by Phanerochaete chrysosporium," Microb. Ecol., vol. 20, pp. 197-209 (1990).
Rice Production Handbook, Louisiana State University Agricultural Center (1987).
R. Portier, "Applications of Adapted Microorganisms for Site Remediation of Contaminated Soil and Ground Water," pp. 247-259 in A. Martin (ed.), Biological Degradation of Wastes (1991).

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