Agrochemical assessment of the effectiveness of application of fertilizers under different potato varieties on meadow-сhernozem soil

In the formation of high yields with good quality, not only the conditions of mineral nutrition, but also the varietal characteristics of cultivated crops are of great importance. The article presents material concerning the effectiveness of mineral fertilizers for promising varieties of potatoes (Alaya Zarya, Svitanok Kievsky, Kormilets, Zekura and Rozara) at doses calculated on the basis of optimal levels (OL) of the content of nutrients in the soil. Field experiments were carried out in 2008-2010 on the Experimental Field of the Omsk State Agrarian University on meadow-chernozem heavy loamy soil with low humus content and low fertility. Two-factor experiments were carried out. The scheme of potato sewing is the following: 70 x 30 cm tubers weighing 80-100 g. The experimental unit size amounts to 9.6 m2, the total experimental plot territory to 510 m2. The yield of the most responsive varieties to the natural fertility of the soil, i.e. Alaya Zarya, Kormilets and Svitanok Kievsky, amounted to 25...