Selection of potato varieties in the cultivation of two crops in the Central Non-Chernozem region

Abstract

The development of potato plants when cultivating two crops occurs in a short period. In this case, field conditions change and do not repeat over time. Crop formation when cultivating two crops in the Central Non-Black Earth Region finds itself in different growing conditions: the first harvest falls on long days and moderate temperatures, as well as sometimes returning frosts, the second harvest falls on short days and high temperatures, as well as lack of moisture. The purpose of our research was to substantiate the choice of varieties for cultivating two crops. The research was carried out at the Research and Production Center Vegetable Experimental Station of the Federal State Budgetary Educational Institution of Higher Education RSAU-MAA named after C.A. Timiryazev, Moscow and at the Central Experimental Station of the All-Russian Research Institute of Agrochemistry Barybino, Moscow Region, 2017‑2022. The experiment was carried out using the method of random placement of plots. Planting density – 47.6 thousand plants per 1 hectare. Sprouted tubers were used for planting during the first planting of the large fraction; during the second planting, the middle fraction was germinated with the addition of dry hydrogel. The second planting was carried out in the vacant space after the first planting had been cleared. The cultivation technology is standard. Cleaning took place at the beginning of July and at the end of September. As a result of the study ni different climatic conditions, it was revealed that planting of 1 crop should be carried out with ultra-early ripening varieties (Riviera) and for 2 crops with mid-early and mid-ripening varieties (Udacha).