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Bioherbicidal potential of Xanthomonas campestris for controlling Conyza canadensis

Author:
Clyde Douglas Boyette, Robert E. Hoagland
Source:
Biocontrol science and technology 2015 v.25 no.2 pp. 229-237
ISSN:
1360-0478
Subject:
weed control, Xanthomonas campestris, greenhouses, dew, pesticidal properties, bolting, inoculum, Conyza canadensis, herbicide resistance, biomass, mortality, bacteria, biological control
Abstract:
The effects of environmental parameters on bioherbicidal activity of the bacterium Xanthomonas campestris , against glyphosate-resistant and – susceptible Conyza canadensis (horseweed), were studied under greenhouse conditions. Rosette leaf-stage plants were more susceptible than older plants, and increasing inoculum from 10 ⁵ to 10 ⁹ cells/mL caused significantly greater plant mortality and biomass reduction of plants in both the rosette and bolting growth stages. A dew period at 25°C was required to cause an 80% and 60% mortality of plants in the rosette and bolting growth stages, respectively. Results indicate that X. campestris can infect and kill horseweed, demonstrating its bioherbicidal potential.
Agid:
60795
Handle:
10113/60795