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Reversing the impact of soil degradation on livestock production
Farmer's Weekly
|February 26, 2021
Livestock producers, particularly in arid climates, are struggling to remain profitable. Soil degradation and declining stocking rates have been identified as some of the main reasons for this decline. Colin Nott, a regenerative agricultural consultant from Namibia, spoke to Annelie Coleman.

Worldwide, primary livestock production has seen both a decline in output and a rise in input costs. At the same time, the entire agriculture sector has found itself under the spotlight for causing major environmental degradation.
“This could be blamed on more carbon dioxide [COâ‚‚] and water vapour being released into the atmosphere, the first from degrading soil and the second due to increased evaporation from bare soil,” says Colin Nott, a regenerative agricultural consultant from Namibia.
According to Nott, arid regions account for approximately 40%, or 5,2 billion hectares, of Earth’s land surface. A considerable portion of these are suited to livestock and, to a lesser extent, crop production. Most of the world’s arid zones are also expanding into more humid areas through desertification. This is the process by which fertile land becomes less productive, typically as a result of inappropriate land management, and the problem is made worse by deforestation.
DEGRADATION IN NAMIBIA
In Namibia, 60 million hectares are suitable for livestock production, but virtually all of this land has been degraded to some extent, according to Nott. Perennial grasses, herbs and soil cover have been destroyed in many places, while plant biodiversity and overall production has declined markedly. Of these 60 million hectares, 45 million are now severely bush-encroached. In many parts of the country, sustainable stocking rates (SSRs) are 50% lower than those of between 50 and 100 years ago. Put more bluntly, the land can now support only half of the animals it did then.
Cette histoire est tirée de l'édition February 26, 2021 de Farmer's Weekly.
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