METHOD FOR EVALUATING SOIL HEALTH BY ACTIVITY MEASUREMENT OF PECTIN-DEGRADING ENZYME

摘要

PROBLEM TO BE SOLVED: To provide a method for evaluating soil health which obtains the result in a short time while considering antagonism to other microorganisms in soil.;SOLUTION: The method for evaluating soil health by activity measurement of pectin-degrading enzyme includes (i) adding a pectin to a sample of soil of evaluated object, culturing the sample, and measuring a pectin-degrading enzyme activity after the culture, (ii) culturing the sample without adding a pectin to a sample of soil of evaluated object and measuring a pectin-degrading enzyme activity after the culture, (iii) obtaining a difference between the pectin degrading enzyme activity measured by (i) and the pectin-degrading enzyme activity measured by (ii), and making the difference as a pectin-degrading enzyme induction activity of the soil of evaluated object, and (iv) comparing the pectin-degrading enzyme induction activity of the soil of evaluated object with a previously calculated pectin-degrading enzyme induction activity of sound soil and determining the soil of evaluated object as unsound soil when the pectin-degrading enzyme induction activity of the soil of evaluated object is higher than the pectin-degrading enzyme induction activity of the sound soil by a fixed ratio.;COPYRIGHT: (C)2012,JPO&INPIT