Yellow nutsedge (Cyperus esculentus) control in tomato with Puccinia canaliculata and pebulate

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-1in transplanted tomato. Foliar applications of urediniospores in mid-June did not affect the yellow nutsedge population;...

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Bibliographic Details
Published in:Weed technology 1992-10, Vol.6 (4), p.980-984
Main Authors: BESTE, C.E, FRANK, J.R, BRUCKART, W.L, JOHNSON, D.R, POTTS, W.E
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
application rates
Biological and medical sciences
biological control
Biological control and other methods
Biomass
chemical control
control biologico
control quimico
crop yield
Cyperus esculentus
Depopulation
desherbage
desherbage mecanique
dose d' application
dosis de aplicacion
escarda
escarda mecanica
Fundamental and applied biological sciences. Psychology
Fungicides
herbicidas
herbicide
Herbicides
lutte biologique
lutte chimique
Lycopersicon esculentum
maryland
Parasitic plants. Weeds
Phytopathology. Animal pests. Plant and forest protection
Phytotoxicity
Plant diseases
Polymeric films
puccinia
rendement des cultures
rendimiento de cultivos
Spraying
Tubers
Weed control
weeding
Weeds
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Summary: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-1in 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-1reduced 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.
ISSN:0890-037X
1550-2740
DOI:10.1017/S0890037X00036575