GreenJack KS – plant growth regulator containing humic acids, fulvic acids, organic matter, K2O and N. The preparation is used to increase the yield of grain legumes, corn and sunflower. The dosage of the preparation is 0.5-5.0 L/ha, number of applications – 3. GreenJack KS is produced by Terravita Ukraine, located in the Kyiv-Svyatoshinsky district of Kyiv region. The preparation is used for spraying crops and is part of a complex of measures to improve plant growth. GreenJack KS contains a high percentage of humic acids (19-65%) and fulvic acids (3-15%), which contributes to improving soil structure and increasing seed germination. Organic matter in the preparation composition is 25-50%, providing additional plant nutrition. The preparation also contains small amounts of K2O (up to 0.5%) and N (up to 0.2%), which helps maintain the balance of mineral substances in the soil. Use of GreenJack KS is recommended for grain legumes, corn and sunflower. The preparation has a wide dosage range – from 0.5 to 5 L/ha – allowing its application to be adapted to specific planting and crop growth conditions. Regular use of the preparation contributes to improving the overall condition of plants and increasing yield.