Removal of nutrition elements by the spring wheat harvest

The purpose of the research is to develop agrochemical normative parameters, taking into account the removal of elements for managing the mineral nutrition of spring wheat plants using fertilizers on quasi-gley agrochernozem of the southern forest-steppe of Western Siberia. The variety of spring soft wheat is Stolypinskaya 2. The soil is agrochernozem quasi-gley, medium arable, heavy loamy. The content of nitrate nitrogen in the soil layer of 0-20 cm (according to Grandval-Lajoux method) was 8.0-8.6 mg/kg, mobile phosphorus and potassium - respectively 126-129 and 241-304 mg/kg (according to Chirikov). The doses of fertilizers were determined on the basis of soil and plant diagnosis in the tillering and booting phase. Nitrogen fertilizers in liquid form with additional application during the growing season of wheat plants allowed to form yields: against the background without the main application, the increases amounted to 0.29 and 0.40 t/ha, respectively (control - 4.29 t/ha). Against the background of N128P95, the increase in yield from nitrogen fertilizing was 0.25 and 0.30 t/ha (background 5.29 t/ha). Fertilizing N10 in the tillering phase contributed to the formation of additions of 0.14 and 0.13 t/ha. The use of fertilizers had a significant effect on the removal of nutrients by spring wheat plants. The removal of nitrogen and phosphorus by grain exceeds the removal by straw, and potassium has an inverse relationship. The agrochemical regulatory parameters defined in the studies can be used to manage the nutrition of spring wheat by calculating fertilizer doses and their application, as well as to adjust nutrition in the process of crop development.