INFLUENCE OF HUMIC ACID APPLICATION ON YIELD, NUTRIENT AVAILABILITY AND UPTAKE IN TOMATO

摘要

A pot culture experiment was conducted to study the influence of humic acid on nutrient availability and uptake in tomato. The data revealed that addition of humic acid @ 20 kg ha" along with 100% recommended dose of fertilizers improved the availability of major and micronutrients viz., iron and zinc and enhanced their uptake. Soil application of humic acid @ 20 kg ha~(-1) along with 75% recommended dose of fertilizers improved the availability and uptake of nutrients than 100% recommended dose of fertilizers alone. Foliar spray of humic acid @ 0.1% showed significant increase in uptake of nutrients than the control.