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Subject: earthworms
Replies: 1 Views: 614

portiap 15.09.11 - 03:31pm
wats the economic value of earthworms to the farmer? *

fatzak 29.02.12 - 08:19pm
1. earthworms help in mixing the soil layer.
2. they also add humus to soil by their excretion and when dead.
3. their tunnels improve aeration and drainage of soil. *

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