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Wirkung voo Talaromyces flavus allein oder in Kombination mit anderen Antagonisten bei der Bekampfung von Verticllium dahliae in Klimakammerversuchen
Author(s) -
Nagtzaam M. P. M.,
Bollen G. J.,
Termorshuizen A. J.
Publication year - 1998
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1998.tb04674.x
Subject(s) - verticillium dahliae , biology , population , bran , horticulture , inoculation , fusarium oxysporum , botany , raw material , ecology , demography , sociology
Talaromyces flat‐US reduced viability of microsclerotia of Verticitlium dahliae on senescent potato stems collected from the field when applied as ascospores in carboxy‐methylcellulose or in talcum powder. Incorporating an alginate wheat‐bran preparation of T. fiavus in soil at a rate of 0.5% (w/w) was followed by a decrease of > 90% of the population of V. dahliae in soil at both 15 and 25 C. Population densities of V. dahliae were negatively correlated (r = ‐0.50; P = 0.001) with those of T. flavus. However, the population of V. dahliae was also reduced in soil with alginate wheat‐bran alone. When incorporated in soil in alginate wheat‐bran and simultaneously coated on seeds in ta.lcum powder. T. flavus reduced colonization of roots and infection of eggplants by K. dahliae. Although to a lesser extent than with the antagonist, alginate wheat‐bran without T. flavus also reduced infection by the pathogen. Treatment with combinations of T. flavus with other biocontrol agents, viz. Bacillus subtilis, Fusarium oxysporum or Gliocladium roseum , containing half of the inoculum of the single application of each antagonist, gave similar control of root colonization and stem infection by V. dahliae as application of the single antagonists. Population densities on the root of each antagonist were not or only slightly affected by the presence of the co‐inoculated antagonist suggesting that the combinations were compatible.