The efficiency of the application of biologically active substances on meristematic potato plants under protected ground conditions

This article discusses the development of the methods for improving the quality of seeds in potato growing and increasing production per plant and per unit of area. One of the important aspects of reducing the load for the original seed production of potatoes can be the use of various biostimulants and preparations of combined effect increasing the resistance of potato plants to various stress factors and the yield and product quality. We studied the method for obtaining of healthy seeds of potatoes in modern conditions by growing breeder’s seeds from the plants completely free from viruses and bacterial infections. We also used new growth regulators of combined protective and stimulating composition with the working title "Nigor" (RF patent No. 2463759) based on humates as a part of the class of phytoimmunomodulators, and Vigor Forte for obtaining healthy mini-potato tubers in protected ground systems. The studies were carried out with meristemic potato plants of the varieties Riviera, Udacha, Nevsky. In the variants of the experiment, we carried out three treatments of plants with the indicated preparations at the concentration of 1 ml / l. It was found that when using growth-stimulating drugs, the plant survival rate increases by an average of 3.5 times in comparison with the control. The use of these preparations has a positive effect on the intensity of development of test-tube plants. So, the use of the combined protective-stimulating composition showed the most significant results: the increase in the multiplication factor up to 2 mini-tubers per plant, the increase in the weight of one mini-tuber in comparison with the control variant, as in all studied varieties by 12-28%.