INFLUENCE OF MELOIDOGYNE-INCOGNITA ON FUSARIUM-WILT OF TOMATO AT OR BELOW THE MINIMUM TEMPERATURE FOR WILT DEVELOPMENT

  • 1 January 1981
    • journal article
    • research article
    • Vol. 13  (1) , 57-60
Abstract
''Bonny Best'' tomato plants were grown at 16, 21 or 24.degree. C for 28 days in soil infested with either of 2 isolates of Fusarium oxysporum f. sp. lycopersici race 1 and M. incognita. Significant levels of fusarium wilt occurred at all temperatures including 16.degree. C. One Fusarium isolate resulted in the highest levels of disease incidence at 21 and 24.degree. C in the presence of root-knot nematodes, and at 24.degree. C when the nematodes were not present. At 16.degree. C, there was no significant difference in the number of plants infected by 2nd Fusarium isolate alone, or in combination with root knot nematodes, although the presence of nematodes resulted in a significant increase in the percentage of disease occurrence and vessel infection at 21.degree. C.