The effects of variations in the yields of barley upon the amount and distribution of the residual soil moisture
1937
Conrad, J.P.
The term "transpiration ratio" and similar terms signify that the larger the crop, the greater is the amount of water transpired in producing it, though the absolute values of these ratios may change somewhat with varying conditions of growth. With the available moisture largely fixed and under growing conditions where the soil is not resupplied with moisture during a considerable period of growth, the larger the crop per unit area, the more deeply will it dry out the soil. Data are presented in keeping with these deductions showing the differences in residual soil moisture and its vertical distribution found under barley plats which varied in yield from 908 to 8,221 pounds of total crop per acre.
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