Here's a soil temperature chart for various field crops and vegetables with minimums and optimums. I had another but I can't find it (I think it went away when my last computer fried.
https://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/agdex1203
It is from Canada so numbers are in C..
https://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/agdex1203
It is from Canada so numbers are in C..
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