Heavy Machinery Packs Soil, Says American Journal
You have probably heard a lot about the importance of organic matter or humus in the last few years, but there’s an angle that you may have missed, says an American journal. It is tied in with the general shift from horses to tractors, and the use of heavier farm equipment.
The soil that is low in or game matter packs easily. That means it cannot take up and hold as much moisture as a soil that is loose and light. And plant food cannot be taken up by the plants as readily either.
United States Department of Agriculture soil conservation men at New York’s Cornell Unnversity have found a direct relationship between organic matter and the amount soil packs. Some soils, now in humus, pack sd easily when run over with a twoplough tractor that water hardly moves through them. That means more erosion loss, as well as a lack of . moisture reserve when you need it. ' ....
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https://paperspast.natlib.govt.nz/newspapers/BPB19490128.2.20
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Bay of Plenty Beacon, Volume 13, Issue 47, 28 January 1949, Page 5
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165Heavy Machinery Packs Soil, Says American Journal Bay of Plenty Beacon, Volume 13, Issue 47, 28 January 1949, Page 5
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