BIO Web Conf.
Volume 53, 2022International Scientific-Practical Conference “Modern Trends of Science, Innovative Technologies in Viticulture and Winemaking” (MTSITVW2022)
|Number of page(s)||6|
|Published online||10 November 2022|
The Effect of pesticide usage on grape yeast
1 Technical University of Moldova, Faculty of food industry, bd. Stefan cel Mare 168, Chisnau, Republic of Moldova
2 Purcari wineries plc, Str. Calea Ieșilor 8, Chisinau, Republic of Moldova
* Corresponding author: firstname.lastname@example.org
For the conventional vineyard, reducing the pesticide usage is the most important issue for converting to organic vineyard. In order to study the effect of pesticide usage on grape yeast, an investigation were designed in vintage 2020, ten vineyards (include two organic vineyards) with different treatment frequency index (TFI) were chosen, and the yeast population counted by two method: cultivate method and the direct epifluorescence technique (DEFT). The results show, the grape yeast from Moldova exist the viable but non-culturable (VBNC) state. In organic vineyards, less proportion yeast reach the VBNC, however the opposite conclusion draw from conventional vineyards. High TFI with high level VBNC yeast population, inversely, less culturable yeast. No matter in which yeast state, the treatment of powdery mildew is the most influential factor on yeast population.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
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