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Resistance of Botrytis cinerea to benzimidazoles and dicarboximides: present situation on grapevine in Italy 1
Author(s) -
GULLINO M. L.,
GARIBALDI A.
Publication year - 1985
Publication title -
eppo bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.327
H-Index - 36
eISSN - 1365-2338
pISSN - 0250-8052
DOI - 10.1111/j.1365-2338.1985.tb00241.x
Subject(s) - botrytis cinerea , conidium , horticulture , resistance (ecology) , biology , botrytis , botany , agronomy
Resistance of Botrytis cinerea to benzimidazoles is present in Italy in almost all vineyards monitored, while resistance to dicarboximides has been detected in 36, 27 and 49% of tested vineyards during 1981, 1982 and 1983, respectively. In 1981 less than 1% of tested bunches carried dicarboximide‐resistant conidia. This value increased slowly with time: in 1983 4.9% of the tested bunches carried dicarboximide‐resistant conidia. Furthermore, only a low percentage (< 10%) of the conidia obtained from each bunch were resistant. Therefore, the present situation of resistance to dicarboximides on grapevine in Italy is certainly not serious and differs from that reported in other countries or on other crops. As a consequence, dicarboximides are still performing well, even in vineyards where resistance has been detected at a low level. No failure of grey mould control has been reported on grapevine in Italy up to now.