Effect of Foliar Application of Water Soluble Fertilizer and Humic Acid on Physico-chemical Properties and Fertility Status of Soil after Harvest of Rose

Abstract

A field experiment on “Effect of foliar application of water soluble fertilizer and humic acid on yield and quality of rosa sp was carried out during Rabi season at PG Research unit, Horticulture Section, College of Agriculture, Nagpur during 2022-2023. The experiment was laid out in Factorial Randomized Block Design. The treatments comprised of four levels of water soluble fertilizer (19:19:19) viz., Control, 200 g, 300 g and 400 g and three levels of humic acid viz., Control, 500 ppm and 750 ppm giving twelve treatment combinations replicated thrice. The collected soil samples were processed and analysed for different soil parameter like soil pH, electrical conductivity, organic carbon, calcium carbonate, available nitrogen, available phosphorus available potassium and available sulphur using standard analytical methods. Results revealed that pH of all the samples of study area was in the neutral to alkaline. Electrical conductivity of all the samples were found normal (<1.0 dsm-1). The organic carbon content of the study area varies from low to medium. The availability of NPK after harvesting was found superior in treatment combination (F4H3), which involved application of 400 g 19:19:19 with 750 ppm humic acid.