LIQUID COMPLEX FERTILIZER WITH MICRONUTRIENTS
Keywords:fertilizers, nitrogen, agrochemistry, micronutrients, blue-pod lupin
The main objective of the study is to investigate the chemical composition and agrochemical efficiency of liquid fertilizer, which is obtained as a secondary product in the production of solid potassium dihydrogen phosphate. In order to achieve the set objective, additives that improve liquid fertilizer properties and increase the concentration of nutrients were selected and then the study of the agrochemical efficiency of these liquid fertilizers was carried out.
Chemical analysis was performed, during which it was found that the liquid fertilizers containes 1.4% P2O5, 4% Cl, about 13.5% K2O, and depending on the nitrogen additives, the nitrogen concentration varied from 1.02% to 3.78% N. After examining the chemical composition of liquid fertilizers, fertilizers of different brands were obtained: 1-2-14; 3-2-14 + ME; 4-2-14 + ME + mineralized lupin leaves; 4-2-14 + ME +lupin leaf extract. After evaluating the agrochemical efficiency, it was observed that the most effective liquid fertilizer was brand 4-2-14 with microelements and lupine leaf extract, because it yielded the largest amount of green mass (0.641 g) and the largest amount of ash (0,093g). However, the longest wheat seedling leaves were obtained by using liquid fertilizer brand 1-2-14 (23.9 cm).