| Summary: | The aim of the study is to investigate effect of biological preparations on crop productivity in Central Yakutia. Field experiment was carried out on pale-yellow cryogenic taiga soil in sharply continental climate of Central Yakutia as a method. The results of the study indicate that the use of biological preparations for potatoes increases the daily gain of tuber mass by 7.31 g per plant. In conclusion, the use of biopreparations in the cultivation of potatoes had a positive effect on the content of dry matter, starch and ascorbic acid, and reduced potato disease rates during the growth season and storage.
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