| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique against diseases that cause lesions or symptom expressions in potato tubers, the technique enabling to diagnose the growth state of a crop with respect to an influence from a pathogenic microorganism without digging out the tubers as well as irrespective of the presence or absence of lesion or symptom expression of tuber disease.SOLUTION: The method for diagnosing the growth state of potato (Solanum tuberosum) crop with respect to influence from a pathogenic microorganism of tuber disease comprises the steps of: providing as an index value the content of organic acid in an aboveground part of a potato crop or a level based on the content of the organic acid; and, with respect to the aforementioned index value, making a comparison between an index value from an aboveground part of potato provided as a diagnosis target and an index value from an aboveground part of a crop in a healthy field to determine the presence or absence of or the degree of substantial difference between the indexes.SELECTED DRAWING: Figure 4 |
