Site specific nutrient management: An overview

Abstract

The optimisation of agricultural practises is required to achieve both high yields and environmental sustainability in response to the growing worldwide need for food production. In order to accomplish these two objectives, site specific nutrient management (SSNM) has emerged as a promising strategy. SSNM is an approach of supplying plants with nutrients to optimally match their inherent spatial and temporal needs for supplemental nutrients by using different tools of SSNM such as remote sensing, GPS, GIS systems, VRT, yield monitoring. With the invention of SSNM, it has become possible to manage soil nutrient variations throughout a field with prescription fertilizer applications. Stress management is another area where SSNM can help Indian farmers. Most cultivated soils in India are acidic, whereas spatial variation in pH is high. Detecting nutrient stresses using remote sensing and combining data in a GIS can help in sitespecific applications of fertilizers and soil amendments. From an economic perspective, SSNM holds the promise of cost savings through judicious use of fertilizers, making agriculture more financially viable for farmers. Effective coordination among the public and private sectors and growers is, therefore, essential for implementing new strategies to achieve fruitful success. So site-specific nutrient management is a game changer in modern agriculture, combining localised accuracy with sustainable practises. As the world's population continues to grow, embracing SSNM could provide a viable way to maintain food security while minimising environmental consequences. To realise the full potential of SSNM, however, a consistent commitment to research, technological integration, and information sharing is required.