Effectiveness of integrated nutrient management in enhancing brinjal growth and soil fertility

Urban Farm DB summary

This study evaluated the effectiveness of integrated nutrient management (INM) in enhancing brinjal (Solanum melongena L.) growth, yield, and soil fertility in urban agricultural settings in Jorhat, India. Given declining soil fertility and over-reliance on chemical fertilizers, INM — combining chemical fertilizers, organic manures, and biofertilizers — was tested as a sustainable alternative using a Randomized Complete Block Design (RCBD) with four treatments (control, chemical fertilizers, organic manures, INM), each replicated three times. Growth parameters (plant height, Leaf Area Index, number of branches) were measured, and fruit yield and quality were recorded at harvest; soil fertility indicators (pH, organic carbon, nitrogen, phosphorus, potassium) were analyzed at the start and end of the study. INM significantly enhanced growth, producing the highest plant height (112 cm), LAI (3.7), and number of branches (6.5). INM-treated plants produced 33% higher fruit yield (25.4 tons/ha) than the chemical fertilizer treatment and 66% higher than the control. Soil fertility improved in INM plots, with increases in soil pH (6.8), organic carbon (1.8%), and nitrogen, phosphorus, and potassium levels.