Impact of Humic Acid, Fulvic Acid and Amino Acid on Growth Related Attributes of Tomato (Solanum lycopersicum L.)

Abstract

The objective of this study was to determine the effect of humic acid, fulvic acid and amino acid foliar application on growth of tomato. These substances are a type of bio stimulant used to promote plant growth and health. The experiment contained three active organic acids treatments amino acid and fulvic acid. They were applied twice a week until the stage of flowering and the first application was carried out 20 days after transplanting. This re-search was conducted at crop research center Turari campus in Department of Horticulture, School of Agriculture ITM University Gwalior (MP) during the season of 2024–25. The experiment was laid out in RBD and replicated thrice. Results indicated that foliar applications of fulvic acid and amino acid significantly enhanced the plant height (29.70 cm at 30 DAS and 58.23 cm at 45 DAS) and appearance of first flowering (40.93), fruiting (55.33) and number of branches (16.13) compared to the control. And higher chlorophyll contains (53.33) with fulvic acid foliar application. In conclusion, application of fulvic acid and amino acid as foliar application increased the plant growth, number of branches and flower and fruit appearance of tomato.