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The second purpose for using gypsum for lawns is when calcium is needed, but you do not require a change in the soil''s pH. Calcium (lime) is needed by plants in large amounts and, therefore, calcium makes up about 65% of the soil''s cations. Only Magnesium can .

Gypsum content in subsurface horizons (By, Cy) of gypsum catena is extremely high according to the composition of bedrock and nonleaching environment (Sierra et al., 2009). Many soils in arid or semiarid climates contain readily soluble salt accumulations (Badía et al., 2011) but this is not the case
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