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Yellow Nutsedge (Cyperus esculentus) Control in Tomato with Puccinia canaliculata and Pebulate

Published online by Cambridge University Press:  12 June 2017

C. Edward Beste ,
J. Ray Frank ,
William L. Bruckart ,
Dennis R. Johnson  and
William E. Potts
C. Edward Beste
Affiliation:
University of Maryland, Lower Eastern Shore Res. and Edu. Center/Salisbury Facility, Salisbury, MD 21801
J. Ray Frank
Affiliation:
USDA-ARS., Foreign Dis. Weed Sci. Res., Ft. Detrick, Frederick, MD 21702
William L. Bruckart
Affiliation:
USDA-ARS., Foreign Dis. Weed Sci. Res., Ft. Detrick, Frederick, MD 21702
Dennis R. Johnson
Affiliation:
USDA-ARS., Foreign Dis. Weed Sci. Res., Ft. Detrick, Frederick, MD 21702
William E. Potts
Affiliation:
University of Maryland/USDA Statistical Consulting Service, Beltsville, MD 20705
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Abstract

Yellow nutsedge control with rust (Puccinia canaliculata (Schw.) Lagerh.) collected in Salisbury, MD., was evaluated alone or in combination with pebulate at 1.7 or 3.3 kg ai ha-1 in transplanted tomato. Foliar applications of urediniospores in mid-June did not affect the yellow nutsedge population; however, tuber biomass was reduced 32%. In July, yellow nutsedge infection was manifest as an increase of phytotoxicity from 2.3 to 4.1 (0 to 10) and of disease incidence increase from 3 to 37%. Pebulate, 3.3 kg ha-1 reduced the yellow nutsedge population and ground cover by 79 and 90%, respectively, in June, with a 48% reduction of both tuber population and biomass in September. Tomato yields were not increased by rust or pebulate treatments. Marketable tomato yield was increased 46% by handweeding. Yellow nutsedge control was not enhanced by the combination treatments of pebulate followed by rust inoculation.

Keywords

Pebulate, S-propyl butylethylcarbamothioateyellow nutsedge (Cyperus esculentus L.) # CYPES, Puccinia canaliculata (Schw.) Lagerhtomato, Lycopersicon esculentum Mill., ‘Ferry Morse 6203’Tomato yieldbiological controlmaneboxamylsethoxydim
Type
Research
Information
Weed Technology , Volume 6 , Issue 4 , December 1992 , pp. 980 - 984
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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