THE EFFECT OF NEW MICROBIOLOGICAL FERTILIZERS ARCSOIL NITROGEN AND ARCSOIL PHOSPHORUS ON THE YIELD AND QUALITY OF POTATO TUBERS

Alexander zevs1947; Ludmila Vasilevna Tiranova; Alexander Vladimirovich Grigoriev

Alexander zevs1947 СПб ФИЦ РАН
Ludmila Vasilevna Tiranova Новгородский научно-исследовательский институт сельского хозяйства - филиал Санкт-Петербургского федерального исследовательского центра Российской академии наук
Alexander Vladimirovich Grigoriev Новгородский научно-исследовательский институт сельского хозяйства - филиал Санкт-Петербургского федерального исследовательского центра Российской академии наук

Keywords: Biofertilizers Arksoil Nitrogen and Arksoil Phosphorus, medium-early potatoes, yield, profitability

Abstract

We studied the effectiveness of two methods of using microbiological preparations Arksoil Nitrogen and Arksoil Phosphorus (treatment of tubers before planting, spraying of vegetative plants at a height of up to 30 cm) in the Novgorod region on sod-podzolic soil (84% of the arable land area). It was found that the use of biofertilizers in technologies made it possible to increase the yield of potato tubers and starch content in them in the Memphis variety by 16 and 20% and 1.8 and 1.6%, in the Columbo variety by 17 and 22% and 0.8 and 1.0% relative to the control, respectively. Potato tubers with a nitrate content in crude products below 108 mg/kg were obtained. The largest yield increase in the cultivation of medium–early potato varieties Memphis and Colombo – 5.5 and 6.1 t/ha in relation to the control was obtained by non-root treatment of plants with biological preparations. In these experimental variants, a high cost recovery of biofertilizers of 13.7 and 14.8 rubles per 1 rub of costs was obtained.