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• <br />• <br />• <br />Acid-Base Potential <br />----------]bs./1000 ftZ------------- <br />Sulfuric Acid Calcium Carbonate <br />Sam~l pH 7.U H 7 <br />ISA 420 <br />16A 185 <br />17A 140 <br />18A 180 <br />19A 220 <br />20A 200 <br />21A 280 <br />22A 110 <br />15B 160 <br />16B 110 <br />17B 80 <br />18B 100 <br />19B 145 <br />21B 170 <br />22B 260 <br />Table presents pounds of material per 1000 square feet required to bring the soil to pH 7.0 based <br />on analysis of percent lime or acid in soil. <br />7-48 <br />