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Subsurface
irrigation works better in heavy clay or sand conditions than
traditional sprinkler systems.
Even
"heavy clay" and "sandy" soils are a mixture
sand, silt and clay. Loam, which contains equal proportions
of sand, silt and clay, is ideal.
However,
plants can thrive in a very broad spectrum of soil textures
when subsurface watering is applied at the proper rate, with
appropriate spacing.
Different
soils create typical wetting pattern shades as seen at right.
Note the dramatic overlap ensuring total coverage throughout
varying root zone depths.
Drip
irrigation works great in clay soils.
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