Soil Conservation Aspects of Food Quality and Crop Yield
A nitrogen-enriched soil having an entire range of mineral nutrients, capable of stabilisation of organic matter with enough surface area for aeration, keeps almost all the basic requirements of soil for its fertility or ability to quantitatively as well as qualitatively produce crops. These soil conservation aspects of food quality and crop yield are discussed in the context of natural traditional farming practices based on biodiversity or forestation.
The cow dung is considered as the suitable natural manure if the farm soil is properly enriched with nitrogen. Average organic carbon and nitrogen contents of cow dung are found to be 427 ± 12 and 8.5 ± 0.33 g/kg, respectively, with carbon/nitrogen ratio equal to 50.24 ± 0.34 g/kg, while carbon/nitrogen ratio in soil for effective farm yield is expected to be approximately 9.0 (Yadav et al. 2013). Therefore, the soil should be well conserved or enriched with nitrogen if cow dung is used as manure. The urine from entire fauna diversity existing in Indian forests was probably helpful, in ancient times, for the reduction of carbon/nitrogen ratio values. Animal urine, conserved by soil, is an important source of nitrogen for the growth of crops. It is believed in India that the perfect conservation of soils is possible when minimum 33.33 % of country surface areas are almost uniformly covered by dense forests.