DETERMINATION OF MACRONUTRIENTS CONCENTRATION IN DRY FOLLIAGE OF SOPHORA MOLLIS TO USE GREEN LUMEN AS ORGANIC FERTILIZER

Abstract

Background: Optimal plant growth and successful crop production rely on the availability of essential macronutrients, which include nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg). These nutrients play critical roles in plant metabolism, soil fertility, and sustainable agriculture. Sophora mollis, a small deciduous shrub of the Fabaceae family, holds potential as an organic fertilizer due to its nutrient-rich foliage. Investigating its macronutrient profile provides insights into its suitability for addressing soil nutrient deficiencies and enhancing agricultural productivity.

Objective: The aim of this study was to evaluate the macronutrient concentrations in the dry foliage of Sophora mollis and to assess its potential as an organic fertilizer for improving soil fertility and supporting sustainable agriculture.

Methods: The research involved the collection of dry foliage from Sophora mollis plants in various regions of Skardu, Gilgit-Baltistan. The samples were dried, powdered, and analyzed in the laboratory. Nitrogen content was determined using the Kjeldahl method, which involved digestion, neutralization, distillation, and titration processes. The concentrations of phosphorus, potassium, calcium, and magnesium were analyzed using UV-Visible spectrophotometry. Appropriate standards were prepared for calibration, and the macronutrient concentrations were calculated based on established protocols.

Results: The dry foliage of Sophora mollis demonstrated macronutrient concentrations of 3.9% nitrogen, 0.6% phosphorus, 4.2% potassium, 2.4% calcium, and 0.8% magnesium. These values closely aligned with the sufficient ranges required for plant growth. The results highlighted the nutrient-rich profile of Sophora mollis, indicating its potential as a sustainable organic fertilizer.

Conclusion: The study concluded that the dry foliage of Sophora mollis is a promising source of essential macronutrients and can serve as an effective organic fertilizer. Its use in sustainable agricultural practices can improve soil fertility and support crop productivity, particularly in tropical and subtropical regions.