The Reaction of Lime and Gypsum on Some Oregon Soils.

Sulphur as a factor in soil fertility ...

“…This is undoubtedly due to the influence of the rock from which the soils were formed, as all the Kentucky samples were from soils derived either from the Trenton limestone or the Cincinnati limestone, both of which are high in phosphorus content. 4. The sulphur and phosphorus contents were calculated to pounds per acre in the surface soil, and compared with the amounts of sulphur and phosphorus removed by maximum crops of corn, wheat, timothy, clover, and alfalfa.…”

“…No report was given as to the character of the compounds that lowered the freezing point. Bradley (4) found an increase in solubiHty of potassium but not of phosphorus in Oregon soils. Briggs WOODARD-SOIL FERTILITY 85 solubility of potassium in California soils when gypsum was added, and the solubility of potassium decreased as the amount of gypsum used was increased.…”

Sulphur as a Factor in Soil Fertility

“…No report was given as to the character of the compounds that lowered the freezing point. BRADLEY (4) found an increase in solubility of potassium but not of phosphorus in Oregon soils. BRIGGS and BREZEALE (6) found a decrease in solubility of potassium in California soils when gypsum was added, and the solubility of potassium decreased as the amount of gypsum used was increased.…”