What is Soil Moisture Conservation Technique?

What are biodigesters?

A biodigester system utilizes organic waste, particularly animal and human excreta, to produce fertilizer and biogas. A biodigester consists of an airtight, high-density polyethylene container within which excreta diluted in water flow continuously and are fermented by microorganisms present in the waste. The fermentation process is anaerobic, i.e., it takes place without oxygen, and the bacteria responsible for decomposition are methanogenic (i.e., they produce methane, also known as biogas).

Rainfall can provide some of the cleanest naturally occurring water that is available. There is considerable scope for the collection of rainwater when it falls, before huge losses occur due to evaporation, transpiration, and runoff and drainage - before it becomes contaminated by natural means or man-made activities. Rainwater harvesting is a particularly suitable technology for areas where there is no surface water, or where groundwater is deep or inaccessible due to hard ground conditions, or where it is too salty or acidic.

Pre-germinated seeds or seedlings are directly planted in soil or broadcast in flooded field under this technology. Rice cultivation is responsible for 10% of GHG emissions from agriculture. In developing countries, the share of rice in GHG emissions from agriculture is even higher, e.g., it was 16% in 1994.

Local name of practice: Sinima Djaknga (fields behind the house)

Country/region/village: Chad/Mayo Kibbi Est /Guélendeng 

Local name of practice: Sonogvé Avilé (fields behind the house)

Country/region/village: Chad/Mayo Kibbi/Fianga 

A woman of Faray community walking around restored lands with a combination of agroforestry zaï and micro-basins.

CO₂ emissions can be reduced with effective irrigation by increasing yields and crop residues which can enhance carbon sequestration. (Smith et. al., 2008).

Most precipitation that falls on human settlements is lost to the atmosphere through evapo-transporation (evaporation plus transpiration of water taken up by plants), or runs into rivers away from settlements before it can be used. In some water-rich regions, particularly wealthy regions with centralized water infrastructure, these losses may not be a major concern. However, in many water-poor areas, small-scale collection infrastructure can contribute greatly to the volume of freshwater available for human use.

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