ISHS Acta Horticulturae 271: VII International Asparagus Symposium
MYCORRHIZAL FUNGI IN RELATION TO ASPARAGUS GROWTH AND FUSARIUM WILT |
| Authors: | Tracy L. Wacker, Gene R. Safir, C. T. Stephens |
| Abstract:
Asparagus seedlings grown in the field and in the greenhouse were inoculated with the vesicular-arbuscular mycorrhizal fungus (VAM), Glomus fasciculatum, and/or Fusarium oxysporum f. sp. asparagi. After three months in the field, VAM-inoculated plants had greater fresh weights than non-VAM plants. By the end of the second season, VAM-inoculated plants grown in high P soils had significantly lower disease ratings than non-VAM plants grown in low P soils. In greenhouse studies, FOA inoculation of VAM-infected asparagus plants reduced VAM root colonization levels under well-watered conditions. Well-watered plants inoculated with both FOA and VAM were less diseased than plants inoculated with FOA alone. The differences in disease ratings in both our field and greenhouse studies were apparently unrelated to final plant tissue phosphorus levels. | |
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