ISHS Acta Horticulturae 271: VII International Asparagus Symposium
SUPPRESSION OF FUSARIUM CROWN AND ROOT ROT OF ASPARAGUS WITH CHLORIDE AND DIFFERENT FORMS OF NITROGEN FERTILIZERS |
| Author: | Wade H. Elmer |
| Abstract:
Greenhouse grown asparagus transplants and experimental field plots were treated with chloride salts (KCl and NaCl) and different nitrogen fertilizers [(NH4)2SO4, NH4NO3, Ca(NO3)2, or KNO3] for effects on growth and Fusarium crown and root rot. Transplants had greater root weights, root lengths and less infection by Fusarium oxysporum and F. moniliforme when treated with NaCl. Potassium chloride was less effective. Potassium nitrate was more conducive to disease and root infection than the other N forms. Conversely, Ca(NO3)2 suppressed disease. Sodium chloride applied at 1120 Kg/Ha was effective in increasing spear weights at two field plots of differing age and disease symptom expression. These findings suggest NaCl nutrition may be beneficial in management of Fusarium crown and root rot. | |
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