which soil conservation technique did George Washington Carver urge farmers to use???

1) crop rotation 2) cover crops
3) contour plowing 4) no-till
farming

6 answers

i chose D
"no till-farming"
http://learningtogive.org/papers/paper83.html
Please read the above site carefully.
D is not the right answer.
so I believe the answer to this question would be crop rotation?
Right!
I think crop rotation
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