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Re:Soil Erosion: Why soil is disappearing from farms by learnfromstory on Sunday July 14, 2019 @06:08PM (#20436492)
Isn't there something extremely wrong about the math in this blerg? Surely 12 million hectares produces a lot more than 20 tonnes of grain annually. Did they mean 20 tonnes per hectare? Otherwise it's low by a factor of ten million. Either way doesn't make sense.
Re:Soil Erosion: Why soil is disappearing from farms by lsb on Sunday July 14, 2019 @06:14PM (#20436534)
https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/16/nrcs143_...

https://en.wikipedia.org/wiki/Bushel#Weight

A hectare is ~2 ac.

Wheat looks like 2-5 tonnes/hectare

Looks like 20 tons per hectare is pretty high, but

Re:Soil Erosion: Why soil is disappearing from farms by hjalle on Monday July 15, 2019 @06:31AM (#20439481)
It's 20 million tonnes per year according to the source https://www.unccd.int/actions/united-nations-decade-deserts-...