“…After applying large amounts of Ca in the form of landplaster in 1989 and 1990, the extractable Mg;Ca ratio in the surface soil had decreased dramatically by July 1990 (Table 4). Strauss and Grizzard (1947) have shown that peanuts can be sensitive to cationic ratios, as yields were shown to be related to K:Mg ratios in the soil. Although leaf Mg was lower in 1990, the leaf and soil Mg relationship was similar over the same range of soil Mg as in 1989.…”