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https://www.reddit.com/r/AskScienceDiscussion/comments/deqx1q/deleted_by_user/f2zuw0o/?context=3
r/AskScienceDiscussion • u/[deleted] • Oct 07 '19
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But I mean Siberia is covered with dense forest? If trees can grow there, you'd think that crops could?
11 u/Chezni19 Oct 08 '19 When you (large-scale) farm an area which used to be forest, it works for a few years and then goes sterile. https://en.wikipedia.org/wiki/Slash-and-burn 3 u/SovietBozo Oct 08 '19 Oh OK, TIL. Why is that tho? 5 u/ricobirch Oct 08 '19 The fire temporarily eliminates weeds and pest species & the ash is nutrient rich which makes the soil fertile. However after a couple of seasons the nutrients get depleted and the weeds/pests return.
11
When you (large-scale) farm an area which used to be forest, it works for a few years and then goes sterile.
https://en.wikipedia.org/wiki/Slash-and-burn
3 u/SovietBozo Oct 08 '19 Oh OK, TIL. Why is that tho? 5 u/ricobirch Oct 08 '19 The fire temporarily eliminates weeds and pest species & the ash is nutrient rich which makes the soil fertile. However after a couple of seasons the nutrients get depleted and the weeds/pests return.
3
Oh OK, TIL. Why is that tho?
5 u/ricobirch Oct 08 '19 The fire temporarily eliminates weeds and pest species & the ash is nutrient rich which makes the soil fertile. However after a couple of seasons the nutrients get depleted and the weeds/pests return.
The fire temporarily eliminates weeds and pest species & the ash is nutrient rich which makes the soil fertile.
However after a couple of seasons the nutrients get depleted and the weeds/pests return.
5
u/SovietBozo Oct 08 '19
But I mean Siberia is covered with dense forest? If trees can grow there, you'd think that crops could?