Abstract
Biocontrol activity of Burkholderia (Pseudomonas) cepacia (isolate D1) and Deny® (liquid and peat moss-based formulations of B. cepacia, CCT Corp., Carlsbad, CA) against Rhizoctonia solani-induced cotton seedling damping-off was measured in the presence of three pre-plant herbicides, pendimethalin, prometryn, and trifluralin in microcosms and in the field. In a pre-emergence damping-off microcosm experiment, the D1 soil drench increased the number of emerged seedlings significantly (P < 0.05), relative to the control (not treated with D1) in non-herbicide-treated soils and in soils treated with trifluralin. In a post emergence damping-off microcosm experiment, the D1 soil drench caused a significant (P < 0.05) increase in seedling survival only in non-herbicide-treated soil and in soils treated with pendimethalin and trifluralin. In two field trials conducted at Safford and Tucson, the D1 soil drench increased cotton stand significantly (P < 0.05), relative to the control, in non-herbicide-treated plots and in plots treated with trifluralin. Cotton stand was significantly (P < 0.05) increased by Deny® soil drench only in non-herbicide-treated plots in Tucson field trial. Deny® seed treatment was inefficient in the presence or absence of the herbicides.
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Heydari, A., Misaghi, I. Biocontrol activity of Burkholderia cepacia against Rhizoctonia solani in herbicide-treated soils. Plant and Soil 202, 109–116 (1998). https://doi.org/10.1023/A:1004370810139
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DOI: https://doi.org/10.1023/A:1004370810139