Soil is being lost at 10 to 40 times the rate at which it can be replenished naturally. Holistic Management can help.
Creative work in being stewards of the land and co-creators of living soil is not an “input” into a food system, but the most important output of good farming,’ writes Shiva.
Soil is being lost at 10 to 40 times the rate at which it can be replenished naturally. This implies 30 per cent less food over the next 20-50 years. Soil erosion washes away soil nutrients. A tonne of top soil averages 1-6 kg of nitrogen, 1-3 kg of phosphorous, 2-30 kg of potassium, whereas soil in eroded land has only 0.1-0.5 per cent nitrogen. The cost of these nutrient losses are $20 billion annually.
Fertile soils contain 100 tonnes of organic matter per ha. Reduction of soil organic matter by 1.4-0.9 per cent lowers yield potential by 50 per cent. Chemical monocultures also make soils more vulnerable to drought and further contribute to food insecurity. (READ MORE)….