Open AccessEfficacy of copper citrate in grapevine disease control
Author(s) -
Goran Aleksić,
Zoran Miličević,
Slobodan Kuzmanović,
Mira Starović,
Miloš Stevanović,
Goran Delibašić,
Svetlana Živković
Publication year - 2019
Publication title -
pesticidi i fitomedicina
Language(s) - English
Resource type - Journals
eISSN - 2406-1026
pISSN - 1820-3949
DOI - 10.2298/pif1902103a
Subject(s) - fungicide , botrytis cinerea , biology , copper , plasmopara viticola , horticulture , botany , chemistry , organic chemistry
The control of Plasmopara viticola and Botrytis cinerea, two of the most dangerous pathogens on grapevine, requires frequent treatments with chemicals based on weather conditions. Numerous applications of fungicides have resulted in developing fungicide resistance. Active ingredients based on copper have been used very successfully for a long time to protect grapevines against these pathogens. Application of a copper citrate formulation with high degree dissociation at a very low concentration (1%) was evaluated in field trials. The efficacy of two concentrations of copper citrate, 0.5 and 1.0%, were tested against P. viticola on grapevine in three locations, and against B. cinerea in two locations during 2018. Our results demonstrated that the concentration of 1.0% copper citrate was highly effective against P. viticola (87.4%) and B. cinerea (63.7%), compared to standard treatment (90.6 and 53.1%), under a high level of infection.