Vol. 7, Issue 1, Part B (2025)

Humic acid, a naturally occurring organic compound derived from decayed plant and animal matter, has gained attention in agricultural practices for its beneficial effects on plant growth and development. In citrus cultivation, Humic acid has been shown to enhance vegetative growth, fruit yield, and soil health, thus contributing to sustainable farming practices. This integrated review aims to explore the biochemical effects of Humic acid on citrus tree development and fruit yield. Various studies have reported that Humic acid application positively influences soil structure, nutrient uptake, and physiological processes in citrus trees. Additionally, Humic acid stimulates root development, enhances photosynthetic efficiency, and boosts resistance to environmental stressors. These benefits are attributed to its ability to improve soil microbial activity, facilitate better nutrient availability, and promote hormonal responses within the plants. While the precise mechanisms remain a topic of ongoing research, the general consensus indicates that Humic acid can serve as an effective soil amendment to optimize citrus tree growth and productivity. This review examines the latest research findings, offering a comprehensive understanding of how Humic acid influences citrus tree health at a biochemical level. Furthermore, it highlights the potential of Humic acid as a sustainable alternative to synthetic fertilizers, providing insights into its role in improving fruit yield quality. The integration of Humic acid into citrus farming practices holds promise for enhancing the efficiency of resource use, reducing environmental impacts, and promoting sustainable agricultural systems. Overall, the review emphasizes the need for further studies to establish optimal application methods and concentrations for maximizing Humic acid's effects on citrus farming.