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Soil Sample Evaluation from Two Different Areas
Photograph of "Two samples of a soil showing the deterioration that [took] place if the cropping system consists mainly of soil-depleting crops. The soil on the left has been used to grow soil-depleting crops year after year over a long period of time. The sample on the right was taken from an area where the soil has been rotated with soil improving crops part of the time."
Date:
August 2, 1967
Creator:
Frie, J. W.
System:
The Gateway to Oklahoma History