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Determination of 0.3 and 15 Atmosphere Pressure Point - Continued <br />• <br />c. Divide weight of oven-dry soil into the amount of <br />water remaining, then multiply by 100 to obtain ~ <br />moisture in the soil at 1/3 atmosphere or 15 atmosphere. <br />d. 0.3 atm. H2O content X 100 = ~ HZA remaining in soil <br />w*. of O.D. Soil <br />at 9,~ atm. <br />15 atm. }fi19 ~bntent X 100 e H2O remaining in soil <br />wt. of O.D. soil <br />at 15 atm. <br />5. CaiCUlate the 8 H O remaining in the soil between 0.3 <br />atmospheta and 152atmosphere by subtracting the 8 H2O <br />remaining ~~ l.~ atmosphere from that remaining at 0.3. <br />This gives the avA~lable H2O holding capacity. <br /> <br /> <br />6-115 <br />