Effect of Foliar Spraying with Some Commercial Bio-Stimulants on Physiological Responses of Eggplant (Solanum melongena L.)

This study was undertaken to determine the effects of two bio-stimulants (Humic Power and Amino 24) on the growth and nutrient contents in eggplant (Solanum melongena L.) cv. Master F1 was grown under greenhouse conditions using a randomized complete block design with three replications.  Different levels of Humic Power were applied (control, 3 mL/L, and 5 mL/L) and Different levels of Amino 24 (control, 1 mL/L, and 2 mL/L) were sprayed on the foliar every 15 days throughout the study period. The highest vegetative growth was obtained with eggplant supplemented with foliar Humic Power (HP.2) with Amino 24 (AM.2), followed by plants treated with Humic Power (HP.1) with Amino 24 (AM.2) compared to untreated plants. There was a significant interaction between the bio-stimulants (Humic Power and Amino 24) for the content of macroelements in eggplant plants, except for the potassium content, where the difference was non-significant. On the other hand, the highest content of macro elements (NPK) was obtained at Humic Power (HP.2) and Amino 24 (AM.2), respectively as compared to the control.