Chemical and cultural control of anthracnose (Colletotrichum lagenarium) in watermelon

Abstract

Anthracnose (Colletotrichum lagenarium (Pass.) Ell. & Halst.) is a serious disease of watermelons in Brunei although other diseases also contribute to yield losses. Previous work has shown that chemical control of the disease is possible. Field trials were carried out to test the effectiveness of several fungicides. As a result of the trials benomyl and mancozeb or captafol were recommended for the control of anthracnose. The integration of chemicals for controlling pests and diseases, correct cultural practices and improved cultivars resulted in a continuous supply of fresh fruits, although a particularly high standard of management was necessary during August to December, the wettest months of the year. Farmers yields increased three to four times with consequent increases in profitability and self sufficiency for the State in this popular fruit.