STUDIES ON THE IMPACT OF INTEGRATED NUTRIENT MANAGEMENT ON GROWTH AND QUALITY PARAMETERS OF TURMERIC

The health of the soil is negatively impacted by chemical fertilizer sources, and plants are less able to absorb the readily available nutrients. The current study used several nutrition sources to reduce the negative impacts of chemical fertilizers, boost nutrient availability, and preserve health. The present experiment was conducted in field laboratory during 2017-19. 4 different manures, 3 different biofertilizers, and graded levels of NPK was applied in the form of 13 treatments. Data on the vegetative development of turmeric plants were gathered before to harvesting, and data on quality criteria were obtained after harvesting in the departmental laboratory. Vermicompost + NPK (100%) + Biofertilizers showed the highest results by considering the leaf number (23.64), tiller number (4.25), height of plant (191.74 cm). Higher dry recovery (23.56%), oleoresin (13.48%) and curcumin content (6.16%). Alternative sources of nutrients are reducing the dose of chemical fertilizers application as well as improves the vegetative growth and quality of turmeric rhizome. By this way we can replace 25-50% of chemical fertilizers with organic sources and enhance the soil health for plant growth and production.