Pea phytomass quality evaluation when applying traditional complex fertilizers and aquarins

The purpose of research is to determine the effect of aquarins and traditional complex fertilizers on the chemical composition, nutritional and energy value of the phytomass of the Annushka pea variety. The laboratory experiment was carried out at the Department of Soil Science and Agrochemistry of the Krasnoyarsk State Agrarian University in two repetitions. Experience options: 1) control (without fertilizers); 2) N10.5P10.5K10.5 - nitroammofoska; 3) N13.8P13.8K27.6 - nitroammophos with potassium sulfate; 4) N1.8P6.6K21 - aquarin 3 (into the soil); 5) N10.8P10.8K10.8 - aquarin 5 (into the soil); 6) N12P4.8K4.8 - aquarin 9 (into the soil). The use of complex fertilizers increased the removal of macronutrients. The growth of peas on dark grey soils under the action of fertilizers had a potassium-calcium-nitrogen type of chemistry. These elements accumulated in the phytomass of peas in greater amounts in ascending order. Fe, B, Mn, Zn were intensively accumulated trace elements in the aboveground phytomass of peas without exceeding the permissible concentrations. The maximum nitrogen content in the above-ground mass of peas was noted in the variant with Aquarin 9 and with the joint application of nitroammophos with potassium sulfate. The highest concentrations of potassium are observed when aquarin 3 is introduced. The use of aquarin 5 and 9 significantly increased the content of Ca, Mg, and Na. The introduction of aquarin of all brands contributed to the increase in macronutrients in the roots of peas. The maximum increase in the content of N and Ca was found when Aquarin 3 and 5 were introduced. The use of Aquarin 9 and nitroammophoska increased the collection of exchangeable energy and feed units. The maximum collection of crude and digestible protein was obtained using Aquarin 9.