Studies on influence of humic acid on growth and yield of brinjal var. KKM1 in Alfisols of Tamil Nadu

Abstract

Field experiment was carried out to study the influence of humic acid and inorganic fertilizers on yield and nutrient uptake of brinjal var. KKM1. The experiment was laid out in RBD with three replications having 11 treatments of both soil and foliar application of humic acid with different levels of inorganic fertilizers. The highest fruit yield (33.4 t/ha) and total dry matter production (10.08 t/ha) were recorded in treatment T10 (75% RDF of NPK with 10 kg of humic acid applied as soil application and 0.2% foliar application). The highest NPK content (1.44, 0.51 and 1.55%, respectively) and uptake (143.1, 33.0 and 148.6 kg/ha) were noted for the same treatment. The highest available N-P-K in soil (291.5, 25.4 and 293.7 kg/ha) was recorded in treatment (T10) applied with 75% RDF of NPK with 10 kg of humic acid applied as soil application and 0.2% foliar application).