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VCRB :: Contents of Volume 51/1999 :: Detailed information


RESPONSE OF GREENHOUSE GROWN BELL PEPPER CULTIVARS TO SOIL DISINFESTATION

Czesław ŚLUSARSKI, Józefa DOBRZAŃSKA
Research Institute of Vegetable Crops, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland


Summary

The response to soil fumigation with methyl bromide of six bell pepper cultivars, grown in Pyrenochaeta lycopersici infested soil, was studied in greenhouse trials over a 2-year period. Significant interactions between cultivars and soil fumigation were evident both years. Soil fumigation caused significant yield increases only in three cultivars (Bendigo F1, Kelvin F1 and Spartacus F1), by 17-20% in the first and by 40-55% in the second year of the experiment. Yield responses of other cultivars (Stanola F1, Zarco F1, Monica F1) were negligible. In cultivars Bendigo F1 and Spartacus F1, the yield increase which occurred following soil fumigation was on account of a significant increment in fruit size, whereas in cv. Kelvin F1 fruit size was not affected significantly, and the yield increase resulted mainly from greater fruit number per plant. The differences in the yield level between cultivars were considerably smaller in fumigated than in nonfumigated soil. All tested pepper cultivars showed similar susceptibility to natural infection by brown and corky root rot complex. Early growth retardation of pepper plants related to the application of methyl bromide was not observed.

keywords:bell pepper, Pyrenochaeta lycopersici, corky root rot, soil fumigation, methyl bromide

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