PROTECTION OF POTATO DURING STORAGE WITH CHEMICAL AND BIOLOGICAL PREPARATIONS
Experimental data on the effect of autumn seed potato etching with chemical and biological preparations on total crop losses during storage of potato tubers obtained in production conditions in the Domodedovo district of the Moscow region in 2018-2019 are presented. The study evaluated the following drugs: Kagatnik, Maxim, Vist (as standards), Kartofin and Siliplant. The experiments were carried out in a potato storage facility with a capacity of 1 thousand tons, equipped with an active ventilation system (70 m3/t per hour). It was found that the autumn treatment of potato tubers of the Nadezhda variety with the studied preparations reduced the total losses during long-term storage by 3.1-6.3% (depending on the preparation) by reducing the natural loss of mass and waste losses. The biological effectiveness of Maxim and Kagatnik preparations was 33.1 and 29.8% of the fungicide-fumigant Vist - 32.1%, Potato and Siliplant 20.5 and 25.2%. The combined use of a half-dose of Maxim and Siliplant was the most effective (41.7%), Vist and Siliplant (31.4%). The profitability of autumn treatment of tubers with preparations was in the range of 72.2-104.6%, when used together - 83.3-125%.