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Use of biocontrol agents and botanicals in integrated management of Botrytis cinerea in table grape vineyards
Author(s) -
Rotolo Caterina,
De Miccolis Angelini Rita M,
Dongiovanni Crescenza,
Pollastro Stefania,
Fumarola Giulio,
Di Carolo Michele,
Perrelli Donato,
Natale Patrizia,
Faretra Francesco
Publication year - 2018
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.4767
Subject(s) - botrytis cinerea , table grape , biological pest control , vitis vinifera , biology , botrytis , integrated pest management , botany , horticulture , biopesticide , microbiology and biotechnology , agronomy , pesticide
BACKGROUND There is increasing interest in the use of biological control agents (BCAs) and botanicals (BOTs) due to increasing awareness of the environmental and human health risks associated with synthetic plant protection products. The BCAs Bacillus subtilis strain QST713, Bacillus amyloliquefaciens strain D747 and Aureobasidium pullulans strains DSM14940 and DSM14941, and the BOTs Melaleuca alternifolia and terpenic extracts are proposed for the control of grey mould in vineyards. This study was aimed at evaluating their effectiveness in integrated crop management strategies and their outcomes in terms of the management of fungicide resistance and residues. RESULTS In field trials carried out on table grapes in southern Italy, use of BCAs or BOTs alternately or mixtures of BCAs or BOTs with the succinate dehydrogenase inhibitor fungicide fluopyram showed efficacy of up to 96% against grey mould on bunches, comparable with the chemical reference strategy (up to 87%). By contrast, use of BCAs or BOTs (up to 11 sprays) alone was not effective (< 30%) under high disease pressure. The integrated use of BCAs or BOTs reduced the spread of succinate dehydrogenase inhibitor‐resistant conidia, as well as fungicide residues in grapes. CONCLUSIONS Spray schedules based on integration of BCAs or BOTs with fungicides are effective against grey mould and reduce the risk of fungicide resistance in B. cinerea and fungicide residues in grapes. © 2017 Society of Chemical Industry