This is what we do to water a field of vegetable.
Pumping water from the creek.
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A hose bringing water to the highest end of the garden.
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Water flowing following ground contour.
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Water flowing along the end of rows.
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Small trench dug by hoe to direct the flow of water to area between rows.
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A row of squash got water.
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Water in between corn rows.
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Sprinkler is sometimes also used to rehydrate the foliage.