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Biological Control of Kudzu (Pueraria lobata) with the Plant Pathogen Pseudomonas syringae pv. phaseolicola

Published online by Cambridge University Press:  12 June 2017

Nina K. Zidack  and
Paul A. Backman
Nina K. Zidack
Affiliation:
Department of Plant Pathology, Auburn University, AL 36849
Paul A. Backman
Affiliation:
Department of Plant Pathology, Auburn University, AL 36849
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Abstract

Pseudomonas syringae pv. phaseolicola formulated with an organosilicone surfactant was tested as a potential bioherbicide for kudzu. Greenhouse studies were performed to determine the effect of kudzu plant age and leaf age on disease severity and growth of the bacterium in planta. Eight-week-old plants were more diseased 4 wk after spraying and had a higher potential for regrowth 7 wk after spraying than 12-wk-old plants. Young leaves developed water-soaked lesions earlier than older leaves and supported higher populations of bacteria. Data from field experiments at two separate locations indicated that single applications in late spring were as effective as multiple applications in early spring and were enhanced by repeat application. Three months after the beginning of the experiment, extensive regrowth occurred for all bioherbicide treatments and no differences were noted between treatments and the nontreated control.

Keywords

Silwet L-77, polyalkyleneoxide modified heptamethyltrisiloxanekudzu, [Pueraria lobata(Willd.) Ohwi], ♯ PUELO, halo blight, Pseudomonas syringae pv. phaseolicola.Biological weed controlPhaseolus vulgaris L.organosilicone surfactantbioherbicide
Type
Weed Management
Information
Weed Science , Volume 44 , Issue 3 , September 1996 , pp. 645 - 649
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

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