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

Author

Listed:
  • T. Bohinc

    (Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia)

  • D. Žnidarčič

    (Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia)

  • S. Trdan

    (Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia)

Abstract

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.

Suggested Citation

  • T. Bohinc & D. Žnidarčič & S. Trdan, 2015. "Comparison of field efficacy of four natural fungicides and metiram against late blight (Phytophthora infestans [Mont.] de Bary) on tomato - Short Communication," Horticultural Science, Czech Academy of Agricultural Sciences, vol. 42(4), pages 215-218.
    • Handle: RePEc:caa:jnlhor:v:42:y:2015:i:4:id:366-2014-hortsci
    DOI: 10.17221/366/2014-HORTSCI
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