Comparison of field efficacy of four natural fungicides and metiram against late blight (Phytophthora infestans [Mont.] de Bary) on tomato - Short Communication

Fungicidal activity of asaronaldehyde, soybean lecithin, garlic extract, salicylic acid, and metiram against late blight on tomato was investigated in a field block experiment. Significantly the lowest severity index was detected on plants treated with metiram, while there were no significant differ...

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Bibliographic Details
Published in:Horticultural science (Praha) 2015-01, Vol.42 (4), p.215-218
Main Authors: Bohinc, T., Žnidarčič, D., Trdan, S.
Format: Article
Language:English
Subjects:
Abiotic factors
biotic factors
Fungicidal activity
Fungicides
Garlic
Late blight
Late blight fungus
Lecithin
lycopersicum esculentum
Pesticides
phytophthora infestans, natural substances
Salicylic acid
Soybeans
Tomatoes
yield
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Summary:Fungicidal activity of asaronaldehyde, soybean lecithin, garlic extract, salicylic acid, and metiram against late blight on tomato was investigated in a field block experiment. Significantly the lowest severity index was detected on plants treated with metiram, while there were no significant differences among plants treated with different natural substances. Mean mass of healthy tomatoes was the highest on plants treated with metiram. It was assumed that severity index was mainly influenced by abiotic factors, especially rain. None of the natural fungicides tested showed satisfactory efficacy against the late blight, therefore new environmentally friendly substances should be studied with the aim of their implementation into sustainable field-grown tomato production.
ISSN:0862-867X
1805-9333
DOI:10.17221/366/2014-HORTSCI