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Comparative Assessment of Fungicides Effect of the Chemical and Biological Nature on the Yield and Quality of Fragaria Ananassa Berries. P. 95–101

Версия для печати

Section: Biology

UDC

634.75:632.93

Authors

Tabakova Irina Dmitrievna
Vologda State Dairy Farming Academy by N.V. Vereshchagin (Vologda, Russia)
e-mail: sekragro@molochnoe.ru
Chukhina Ol’ga Vasil’evna
Vologda State Dairy Farming Academy by N.V. Vereshchagin (Vologda, Russia)
e-mail: Dekanagro@molochnoe.ru

Abstract

Gray mold (Botrytis cinerea Pers. ex. Fr.) can destroy 10–20 % of a crop, in cold rainy years the loss can reach up to 80–100 %. Trichoderma fungus, acteria of the genus Pseudomonas, Bacillus are acknowledged to be the biological agents-antagonists of gray mold pathogen. The majority of gray mold germicides come through fungi Trichoderma (“Trichoderma”, “Trihodeks”) or bacteria Pseudomonas and Bacillus (“Planriz”, “Psevdobakterin”, et al.). In the conditions of the Vologda region for 2 years of researches the garden strawberry provided productivity of berries of 68.13 t/hectare at control, without the use of fungicides on sod-podzolic soil. Fungicides differently affected the productivity of strawberry in the years of researches. In 2012 Phytosporin-M 2-fold processing provided a significant increase of productivity of berries. On average, for 2 years of researches of the application of chemical and biological germicides, there was no significant reduction in the yield of berries Fragaria ananassa. The yield increased slightly after 2-fold Phytosporin-M processing of plants. The number of berries of one bush changed a little at application of various germicides for protection of berries, from 66 to 68 pieces. The average fruit weight for years of researches ranged from 11.2 to 12.9 g. Apparently, due to the size of berries there is a slight increase in the yield of strawberry in the application of Phytosporin-M. Germicides reduced the susceptibility of gray mold by 50–63 %. It should be noted that the efficiency of Procymidone and Phytosporin - M germicides at 2-fold processing is identical, and for 2 years of researches it averaged 62–63 %. The greatest content of vitamin C and total sugar respectively 61 mg/kg and 10.4 % is provided by 2-fold Phytosporin-M processing of a plant.

Keywords

Fragaria ananassa, chemical, biological products, productivity, affect, gray mold
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