AQ-10, a unique biofungicide on the basis of fungus Ampelomyces quisqualis for the control of powdery mildew
2001
Sirca, M. (KARISA Dutovlje d.o.o., Ljubljana (Slovenia))
AQ-10 is a new biofungicide that contains fungal spores of Ampelomyces qisqualis for the control of powdery mildew by parasiting and killing the fungal organisms that cause the disease. The product has been registered in USA in 1994 already; some years it has been registered in some European countries (Swiss, Great Britain, France.), too, from last year also in Italy. AQ-10 is approved for the efficient and biotical use of Powdery Mildew. AQ-10 is not selective for specific strains of Powdery Mildew but parasites the fungal organisms on various crops. For its activation it needs 60% of air humidity therefore application should be made in the early morning or late evening when the humidity is at its highest, with the addition of some wetting agent. When spores of AQ-10 penetrate into Powdery Mildew mycelia (2-4 hours) their efficacy is depending on external influences not any more. AQ-10 is mostly preventive product but it acts also ¯eradicatively® and is efficient also against mycelia which passed the winter. Initial application should begin before the appearance of the symptoms and at the latest when three spots on 100 leaves or fruits have been observed. AQ- 10 has very short pre-harvest interval, only 24 hours, so it can be applied up to and including the day of harvest. It is very important at the production of vegetables and at late infections with Powdery Mildew on vine plant when the other products can be used not any more. In registration trials, AQ-10 showed high efficacy at Powdery Mildew control on vine plant and vegetables. In countries when AQ-10 has been registered, it is indispensable product in integrated and especially biotical production of vegetables, grapes and fruit. In the lecture, the properties, mode of action, possibilities for the use and results of trials in Slovenia and abroad, have been described. AQ-10 should be on the market this season in Slovenia.
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