A crash course in changing the world.
Soil health is intricately related to food security. Many of my friends wanted to have a brief on soil health. Here I go with a brief....
Soil health refers to the fitness of soil for specific purpose determined by the factors chosen for soil classification, soil suitability and land capability. It examines spatial and temporal variations induced by land use policy or management. Soil organic carbon is the most reliable, versatile and easily a****sable indicator, encompassing interactive effect of several factors. Plateuing or decreasing trends of crop yield at current level of management indicates declining soil health. Erosion, drought and desertification, irrigation induced salinity and sodicity, paradigm shift in land use, nutrient depletion and adoption of intensive cultivation are the cause of soil health deterioration. Erratic rainfall and exploitation of land, water and vegetation resources by ever increasing human and livestock population further accentuate the problem of soil health. Increasing salinity, residual carbonate, alkalinity and contamination of surface and ground water through heavy metals, nitrates, fluoride and arsenic are the reflection of deteriorating soil health.