Combating Desertification in Africa : Zainer’s Contribution to SDG 15 (Life on Land)
Zainer is a low-cost machine for climate resilient agriculture in arid and semi-arid regions.
The Zainer is a vertical soil drill, mounted on a two wheeled cart and powered by a small 5hp petrol engine. Excavated soil is deposited on the down-stream side of the Zaï pit to make sure that run-off water from the field is directed into the pit for local infiltration. The design of the Zainer has been optimized for fuel efficiency and drilling speed to minimize the operational costs for the farmer.
Operating the Zainer can be comfortably done by both female and male farmers. Depending on the soil conditions, farmers are able to produce up to 17 Zaï plantholes per minute and 1 ha of land can be prepared within 5 days (compared to 300 hours of labor for manual Zaï). The drill bit can easily be replaced and be adapted to different soil conditions and desired plant hole dimensions.
Due to climate change, rainfall patterns in Africa have become less predictable. As a result, African farmers are experiencing production losses for their main rainfed crops. This climate instability, combined with increasing land degradation linked to desertification, poses a serious risk to food security and family incomes, particularly for smallholder farmers.
Indigenous conservation and regenerative agriculture practices can largely mitigate these risks and help combat desertification, but farmers consider these traditional practices too labor-intensive and economically unviable.
Affordable mechanization of climate-smart agricultural practices can overcome these drawbacks. An organization called Practica has therefore initiated the development of a simple tool to quickly and inexpensively produce small basins or pits for local rainwater retention. This tool is called "Zaïner," in reference to the traditional West African practice of creating small planting holes, called Zaï.
This innovative tool aims to strengthen the resilience of soils and farmers in the face of desertification and climate change.
