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Resistance of diamondback moth (Lepidoptera, Plutellidae) to bacillus-thuringiensis subspecies in the field. Journal Of Economic Entomology 86, 697-705
| Shelton A., ROBERTSON, JL, TANG, JD, PEREZ, C, EIGENBRODE, SD, PREISLER, HK, WILSEY, WT, COOLEY, RJ (1993).
| Diamondback Moth (Plutella xylostella (L.)) populations collected in 1990 from Brassica plants in six states of the U.S, and in Indonesia were tested for their responses to two different Bacillus thuringiensis subsp. kurstaki insecticides. Populations from Florida that had been treated with these insecticides extensively over years, displayed significantly lower mortality. Significant differences between the response of resistant and susceptible populations to two produts containing B. thuringiensis subsp. kurstaki were observed, thus suggesting that the products actually differ in the number or amount of toxins. These studies indicate increasing resistance problems caused by intensive use of any B. thuringiensis product.
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