ALTERNATIVE CHEMICALS TO CONTROL OIDIUM NEOLYCOPERSICI ON TOMATO

Oidium neolycopersici, causal agent of powdery mildew on many crops is regarded as a significant problem for greenhouse tomato cultivation.
The pathogen was recorded in Western Turkey in 2006. Aiming to find out alternative chemicals comparable with synthetic fungicides for especially organic production WP S, NaHCO₃, K₂SiO₃, KH₂PO₄, H₂O₂, H₂O₂+ WP S and trifloxystrobin were tested against the pathogen in a growth chamber and in a greenhouse by using tomato cv. “SC-2121”.
WP S and K₂SiO₃ were found as the most effective chemicals in the growth chamber, whereas the combination H₂O₂+WP S and WP S gave the best results under the greenhouse conditions.
It was detected that the synthetic fungicide trifloxystrobin was unable to control the disease satisfactorily.

II International Symposium on Tomato Diseases

B. Sin, E. Onogur

powdery mildew, trifloxystrobin

https://doi.org/10.17660/ActaHortic.2009.808.60