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A strain of Bacillus thuringiensis for the control of plant-parasitic nematodes

Biocontrol science and technology(1): 41-46
A strain of Bacillus thuringiensis for the control of plant-parasitic nematodes
An isolate of Bacillus thuringiensis, designated CR-371, was evaluated for efficacy in controlling plant-parasitic nematodes. This isolate was first shown to be nematicidal to Caenorhabditis elegans in an in vitro laboratory assay. Treatment resulted in a significant reduction in galls due to root-knot nematode on tomato in a greenhouse trial. In two field trials in Puerto Rico, CR-371-treated tomatoes and pepper had significantly fewer root galls due to Meloidogyne incognita than untreated controls, and populations of Rotylenchulus reniformis were smaller. In one experiment, CR-371 treatment was associated with significant increases in pepper yields, while in the second trial small yield increases of pepper and tomato occurred. In a greenhouse trial, incorporation of CR-371 into a methyl cellulose seed coat gave similar control of root-knot nematode on tomato as compared to CR-371 applied as a drench. CR-371-treated strawberry plants also had smaller populations of Pratylenchus penetrans in roots in a greenhouse trial in Massachusetts.

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Accession: 002289125

DOI: 10.1080/09583159309355257

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