かん水及びマルチ除去によるジャガイモ亀の甲症の防除

抄録

Irrigation and mulch-removal treatments as practical means to control russet scab of potato caused by Streptomyces cheloniumii were evaluated in field experiments. These treatments reduced the damage of the disease. Removing mulch in early May followed by irrigating from early May to early June resulted in the most effective control. On the other hand, to irrigate from mid May to early June was proved to be the best measure in the non-mulch treatment.