Abstract
Viticulture is impossible without the use of chemical plant protection agents. Their use follows to ecological destabilization of ampelocenoses and constitutes real danger to human health. Last years there is a tendency to biologize the protection technologies that the relevance of studies of the influence of biopreparations on the quality of graps and wines. The article presents the results studies of fungicide action of the preparations Biocomposite-correct and Biocomposite-protect. Their high anti-mycotic activity (97-100%) against Trichothecium roseum and Botrytis cinerea has been established. The high efficiency in the control of grey rot on grapes cultivar Merlot showed a two-fold application of the Biocomposite-protect– the damage to grapes decreased by 2 times in comparison with the control and amounted to 0.3%. Using of biofungicides did not affect the of mush/must fermentation. The test wines were distinguished by a higher (by 13-28%) concentration of phenolic substances. The use of Biocomposite-protect followed to an increase of anthocyanins concentration (by 1.5 times) and the total dry extract (by 12%) in wines; decrease – of titratable acids; Biocomposite-correct – decrease the total dry extract (by 10%). Using of biological preparations for grape protection did not influence the organoleptic quality of wines.
Highlights
An important agrotechnical approach to preserve grape yield is its protection from pests and diseases
The results of laboratory tests of the effectiveness of biofungicides against pathogenic micromycetes isolated from grape plants into the pure culture (Alternaria sp.; Botrytis cinerea Pers.; Macrophoma flaccida (Viala et Rav.) Cav.; Trichothecium roseum (Pers.) Link; Fusarium sp.) showed, that both of the studied biological preparations performed a consistently high anti-mycotic activity (97-100%) against Trichothecium roseum, starting from the fifth day of cultivation (Fig. 1)
Field tests of biological preparations showed high efficiency of two-fold application of the biofungicide Biocomposite-protect, L in the control of gray rot progression – the intensity of grape affection decreased by half in comparison with the control; the disease progression on the plot treated with Biocomposite-correct, SC, remained at the level of the variant without specialized processing for protection against gray rot, and amounted to 0.6%
Summary
An important agrotechnical approach to preserve grape yield is its protection from pests and diseases. There are massive epiphytotics of disease, requiring the increasing use of chemicals to control them. All these negative consequences of pesticide using have led to understanding the necessity to improve plant protection, the transition from individual techniques and methods to their integration in the system, the development of more sustainable means and methods [3]. The main advantage of microbiological plant protection agents based on naturally occurring viruses, bacteria, fungi is their specificity – the ability to infect certain objects without harming humans, animals, birds and useful insects [6, 7]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
