Productivity and grain quality of winter wheat varieties using biostimulants Megafol and Quantis in the conditions of Tatarstan Republic

The research was conducted to study the effects of biostimulants Megafol and Quantis on the yield and grain quality of winter soft wheat varieties Marathon and Fotinha. The work was carried out in 2021-2023 in the Pre-Kama region of the Republic of Tatarstan. Field experiments were conducted on the territory of Agrobiotechnopark LLC in Kazan State Agrarian University. The soil of the experimental site is gray forest, medium loamy. The agrochemical characteristics of the soil are as follows: humus according to Tyurin 3.4%, mobile phosphorus content 250-270 mg / kg and exchangeable potassium 170 mg/kg according to Kirsanov, soil acidity close to neutral 6.6 pH. Field experiment scheme: 1) Without spraying crops with biostimulators – control; 2) Spraying plants with biostimulator Megafol 2 l/ha; 3) Spraying plants with biostimulator Quantis 2 l/ha; 4) Spraying plants with biostimulators Megafol 1 l/ha and Quantis 1 l/ha. The sowing rate of winter wheat is 5.5 million. germinating seeds per 1 ha. N32P32K32 was introduced under pre-sowing cultivation, and early spring fertilization with ammonium nitrate N34 was carried out. The use of the biostimulator Megafol with a dose of 2 liters/ha provided an increase in yields over the years of research for the Marathon variety by 4.4%, for the Fotinha variety by 3.9%, and when using the biostimulator Quantis with a dose of 2 liters/ha, the yield increase for the Marathon variety reached 6.1%, for the Fotinha variety 4.8%. The maximum grain yield, on average for 2022-2023, with joint spraying of plants with biostimulants Megafol 1 l/ha + The quantis of 1 l/ha was 8.01 t/ha for Marathon grade and 7.14 t/ha for Fotinha grade.