Changes in availability of active substances in fungicides in light of resistance prevention in major potato pathogens
Joanna Sobczak
sekretariat@iorpib.poznan.plInstytut Ochrony Roślin — Państwowy Instytut Badawczy w Poznaniu (Poland)
Abstract
There are 59 fungicides available for potato protection against the most dangerous pathogens: Phytophthora infestans and Alternaria spp. altogether. 58 of them have application in protection against late blight. The ranges of use of 28 fungicides include protection against early blight. Plant protection products placed on the market contain 22 different active substances and lots of them have various modes of action. The number of active substances and plant protection products hasn’t changed a lot comparing year 2012 with 2001. Some of substances and plant protection products used before Poland’s accession to European Union were withdrawn. Some substances new in potato protection were registered after this time. Some of active substances available on the Polish market are in high resistance risk groups. Plant protection products containing active substances with a risk of resistance usually contain also other substance with different mode of action, what is an important element of resistance prevention strategy. The actual assortment of active substances and plant protection products placed on the Polish market, availability of products with two active substances with different modes of action allow to protect potato in a way that is limiting resistance risk, when the right choice and rotation of fungicides are applied.
Keywords:
active substances, early blight, fungicides, late blight, potato protection, resistanceReferences
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Authors
Joanna Sobczaksekretariat@iorpib.poznan.pl
Instytut Ochrony Roślin — Państwowy Instytut Badawczy w Poznaniu Poland
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