Journal
HORTICULTURAE
Volume 7, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/horticulturae7100366
Keywords
chitosan; natural polymer; management; environmental safety; organic farming; basic substances; pre-harvest fungal disease; tomato
Categories
Funding
- Ministry of Agriculture of the Czech Republic [QK1920214, QK1910072]
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The growing pressure to reduce the environmental pesticide burden has led to increased demand for research on new, effective, naturally based agents. Chitosan has been shown to be highly effective and safe in controlling Phytophthora infestans, with a protective effect of 99.3% in natural conditions and equivalent direct activity to synthetic fungicides. Promoting further expansion of chitosan within legislation could reduce the pesticide burden and enhance eco-friendly plant protection.
Growing pressure to reduce the environmental pesticide burden has the greatest impact on agriculture and crop protection. There is an enormous increase in the demand for research on new, effective, naturally based agents that do not pose an environmental risk. Phytophthora infestans is one of the most destructive phytopathogens, especially in cases where synthetic fungicides are not allowed. This paper describes the high efficacy and safety of the natural polymer chitosan under in vitro and in vivo conditions and its dominance over other natural agents or products. Chitosan demonstrated the highest efficacy against P. infestans. A concentration of 0.2-0.4% was highly effective. The protective effect of chitosan was 99.3% in natural conditions. Direct activity, equivalent to synthetic fungicides (MIC50 0.293 mg/mL), was confirmed. Chitosan was rated non-toxic to useful non-target species. We promote further chitosan expansion within legislation and implementation of chitosan as a safe substance that could reduce the pesticide burden, particularly in eco-friendly plant protection and production of non-harmful foods.
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