A soil has 48 percent water when saturated, 28 percent water at field capacity, 6 percent at permanent wilting point and

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A soil has 48 percent water when saturated, 28 percent water at
field capacity, 6 percent at permanent wilting point and 3 percent
water at the air dry condition. The soil weighed 81 pounds per
cubic foot when oven dry.
A. The percentage of water available to plants at field
capacity:
B. The inches of water available for plants per acre foot of
soil at field capacity.
C. assume the evapotranspiration rate for a crop is 0.16 inches
of water loss per day. Assume the crop is to be irrigated when one
half the total plant available water is consumed. Maximum number of
days between each irrigation: