Биоудобрения и минеральное питание - основа урожайности твердой пшеницы в зоне чернозема южного Нижнего Поволжья

Abstract

The experiment made it possible to develop new approaches to technological methods for increasing the yield of spring and winter durum wheat varieties against the background of creating prerequisites for preserving the natural fertility of the soil. Along with the released varieties, promising varieties of wheat were studied against the background of the use of new generation biofertilizers and developed doses of mineral nutrition for the planned yield levels. As, along with durum wheat varieties, which are accepted for zoning in the 8th region, modern varieties with high plasticity and adaptability to arid conditions were chosen. In addition, they are able to have a beneficial effect on the course of microbiological soil processes. The positive effect of the durum wheat root system with the symbiosis of biofertilizers was noted. The experiment was carried out in 2018…2022. for land use of the peasant farm "Eliseev A.N", which is located in the black soil zone of the southern Mikhailovsky district of the Volgograd region. Studied varieties of hard spring wheat: Krasnokutka 13, Donskaya elegy and varieties of winter durum wheat: Agat Donskoy and Aksinit with the use of biofertilizers and mineral nutrition for given yield levels (according to the method of Dospekhov B.A., 2011). A five-year experiment has shown that biofertilizers (Blago +, Gumi 20) may well constitute an alternative to traditional mineral nutrition to obtain a given level of yield of hard spring and winter wheat varieties. The use of biofertilizers (as a less expensive means of purchasing them) will increase the yield up to 3.05 t/ha for the Donskaya elegia variety, and up to 3.84 t/ha for winter durum wheat Aksinit, using biofertilizer Gumi 20. Maximum yield level was obtained on the variant of the complex application of Gumi 20+N221P87K135 on the Aksinit variety, which amounted to 6.62 t/ha (with a planned yield of 6.00 t/ha). On varieties of spring durum wheat, the highest yield was obtained in variety Donskaya elegia (5.32 t/ha) on the variant of application of Gumi 20+N221P87K135.