Basic information about soils and plant interactions
Sandy soils should be fertilized more often but with less fertilizer than loamy soils One of the characteristics of sandy soils is that they have a low cation exchange capacity (CEC) which means that sand does not hold much in the way of nutrients. The number of exchange sites to hold cations like potassium and calcium is less than that of clay or loam soils. Because they cannot hold nutrients, there is not point in fertilizing them heavily. The best strategy is to use less fertilizer but fertilize more often. This way the plant will have a better chance to pick up the nutrients in a timely manner over the growing season.