ASSESSMENT OF PEA VARIETIES AT DIFFERENT LEVELS OF MINERAL NUTRITION

Assessment of pea varieties at different levels of mineral nutrition is a specific task associated with the need to increase yields and reduce vegetable protein deficiency. The aim of the work was to study the peculiarities of productivity formation of pea varieties and substantiate the optimal application of "starting" doses of mineral fertilizers, which ensure high grain yields. To achieve the goal, a two-factor field experiment was carried out. Factor A – sowing pea varieties; Factor B – mineral nutrition levels. As a result, it was found that the assessed varieties responded well to the application of low "starter" doses of mineral fertilizers (N16P16K16; N32P32K32). The pea varieties Pharaoh and Flagman 12 formed the highest grain yield when N32P32K32 was applied. The Rocket and ESO varieties also showed the highest yield of grain at the background of the application of N32P32K32 for the three-year period of the study. However, in some years there was no significant difference in yield obtained using N16P16K16 and N32P32K32 for these varieties. The highest biological yield over the years was in the variety ESO (4.3 t/ha), a slightly lower yield was in the variety Rocket (4.1 t/ha), even lower was the yield of the varieties Flagman 12 (3.6 t/ha) and Pharaoh (3.4 t/ha)