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Bentazon Reduces Rust-Induced Disease in Yellow Nutsedge, Cyperus esculentus

Published online by Cambridge University Press:  12 June 2017

William L. Bruckart
Affiliation:
Foreign Disease-Weed Sci. Res. Unit, Ft. Detrick, Bldg. 1301, Frederick, MD 21701
Dennis R. Johnson
Affiliation:
Foreign Disease-Weed Sci. Res. Unit, Ft. Detrick, Bldg. 1301, Frederick, MD 21701
J. Ray Frank
Affiliation:
Foreign Disease-Weed Sci. Res. Unit, Ft. Detrick, Bldg. 1301, Frederick, MD 21701

Abstract

Puccinia canaliculata (Schw.) Lagerh. from Salisbury, MD, identified in greenhouse tests as specific to yellow nutsedge, was field evaluated for biological control of yellow nutsedge over a 2-yr period. Treatments included all combinations of P. canaliculata and 0.3 or 0.6 kg ai/ha benzaton. Disease development was reduced 50% by treatment with bentazon, compared with P. canaliculata alone. P. canaliculata reduced tuber recovery by 44%. Phytotoxicity was significantly higher from the rust treatments than controls. Treatment with P. canaliculata did not affect the number of shoots/m2.

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

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