17. Use Contour Stripcropping and Contour Buffer
Strips |
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Contour
stripcropping is a system of alternating strips of meadow or small
grains with strips of row crops on the contour.
This practice can reduce soil erosion by up to 75 percent when
compared to planting row crops up and down the slope.
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Strips
of row crops should be the same width, or nearly the same, as the
strips of close-grown crops and hayland. Strip widths can vary by
up to 10 percent. |
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Also,
to be most effective, no more than half the field should be in row
crop in any one year. Keep strip widths consistent from year to year,
and use field border strips to avoid planting end rows up and down
hill. The field borders provide access to all strips throughout the
growing season. |
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Contour
buffer strips are strips of sod, alternated with strips of row crops.
Unlike contour stripcropping, in which all strips are roughly the
same width, buffer strips are narrow, while the strips of row crops
are wide. |
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Although
contour buffer strips offer less erosion-control than contour stripcropping,
the principle is the same: The strips of sod slow runoff, increase
the infiltration of water into the soil, and trap sediment moving
from the crop strips above. |
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