Level of mineral nutrition has influence on potato yield and its suitability for processing

The article presents the results of tests on the responsiveness of four potato varieties of different ripeness groups of universal purpose (Red Scarlett, Darenka, Nevsky, Grand) to doses and methods of applying mineral fertilizers in sandy loam soils of the Moscow region. The best options over the years of research have been options with the use of mineral fertilizers at a dose of N90P90K120and additional leaf treatment with trace elements. Due to three–fold foliar top dressing with Agrovin Micro agrochemicals at a rate of 2.0 l/ha for critical plant growth phases, the greatest increases in biometric indicators, total and marketable yields, dry matter content, starch, and quality indicators of processed products - crispy, fries, and evacuated potatoes were obtained. In the conditions of the Moscow region, the increase in gross yield, depending on the variety, was 3.5-3.6 t/ha or 23.0-25.6% compared with the control. The number of marketable potatoes exceeded this indicator in the control by 30.5-45.5%. The most suitable for processing into fried potato products (crispy potatoes and fries) from the studied varieties were early Red Scarlett and medium-ripened Grand. All other things being equal, the color index of crispy potatoes and French fries in these varieties was higher by 1.0-1.5 points compared to the average early Nevsky variety. The most suitable varieties for vacuum packaging without the use of preservatives were Red Scarlett and Grand. The index of the pulp's resistance to darkening, depending on the shelf life, was higher in these varieties than in the Darenka and Nevsky varieties by 1.2-2.0 points.

картофель, сорта, удобрения, биометрические показатели, урожайность, биохимическая оценка, пригодность к переработке