Integrated disease management of strawberry anthracnose and development of a new biopesticide

摘要

In Japan, strawberry anthracnose caused by Glomerella cingulata (Stoneman) Spaulding et Schrenk and Colletotrichum acutatum Simmonds is regarded as a serious disease of strawberry (Fragaria ?ananassa). Since the 1980s, with the introduction of new cultivars (Nyohou and Toyonoka), the disease has become more serious in many areas in Japan. Infection by G. cingulata has caused severe damage to the strawberry industry in the main production areas of Tochigi Prefecture, the largest producer of strawberry fruits for 44 years, causing many farmers to stop growing strawberry. To address this problem, I have studied the (1) ecology and epidemiology of two anthracnose pathogens; (2) practical application of biological control of disease using antagonistic fungi; and (3) development of a simple diagnostic method using an ethanol immersion treatment (SDEI).