Effect of humic substances on yield and nutrient contents of Eggplant Santana (Solanum melongena) plants in gray-brown soil

Humic substances promote the conversion of nutrients into forms available to plants. It also stimulates seed germination and viability, its main effect usually being more prominent in roots. This study was conducted a randomized complete block design with three replications Gobustan, Azerbaijan, 2021 growing season, determine effects different doses (0, 250, 500 1000 ppm) humic such as acid (HA), fulvic (FA) (HFA) on fresh yield nutrient contents (N, P K) Eggplant Santana (Solanum melongena var. esculentum Santana) plants field experiment. According results this study, substance treatments increased yields leaf Santana, increase found be significant. The highest value for NPK were obtained from ppm HFA dose. These suggest that HA FA combination standard application will sufficient obtain adequate leafs.