Abstract
To a highly acidic mineral soil of tertiary origin added CaCO_3 in ascending rates of amount and cultivated above named four crops. 1) The wheat grows best on the soil which contains good supply of lime and react neutral or slightly basic. 2) The buckwheat grows best on the soil with moderate supply of lime and react weakly acidic or neutral. But it has fairly good adaptation for the wide range of soil reaction. 3) Though the rye grows best on the soil of weak acidic reaction with moderate supply of exchangeable lime, it can thrive on the soil of very wide range of reaction from highly acidic to basic without much retarding its yield. 4) Though the oat grows best on the soil of weak basic reaction with good supply of lime, it can grow on the fairly strong acid soil with moderate supply of exchangeable lime.
