Reproduction of Globodera tabacum solanacearum in Seven Flue-Cured Tobacco-Producing Soils
Keywords:
cyst nematode, flue-cured tobacco, globodera tabacum solanacearum, nematode, Nicotiana¿tabacum, soil edaphic factors, suppressive soil, tobacco cyst nematodeAbstract
The tobacco cyst nematode (Globodera tabacum solanacearum) continues to pose a serious threat to flue-cured tobacco production in Virginia and nearby states. Soils were sampled from five uninfested and two infested flue-cured tobacco-producing locations. Twenty-three edaphic factors were characterized to determine if any were correlated with G. t. solanacearum reproduction. Comparisons were also made between pasteurized and natural soils to determine if biological suppression of G. t. solanacearum reproduction might be occurring in currently uninfested areas. Differences in G. t. solanacearum reproduction were noted among the soils, but results were inconsistent across the three trials conducted in this study. Only soil pH correlated significantly with nematode reproduction, and then only in one of three trials. Globodera tabacum solanacearum reproduced with similar efficiency in natural and pasteurized soils.Downloads
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