Colletotrichum orbiculare

[as 'lagenarium'], (1893) Colletotrichum oligochaetum Cavara, (1889) Cytospora orbicularis Berk., (1838) Fusarium lagenaria Pass.

It can effect cucumbers, melon, squash, watermelon and pumpkin, especially when the weather is rainy, humid and warm.

[2] Partners of the CABI-led programme, Plantwise from the Ministry of Agriculture in Zambia have several recommendations for managing C. orbiculare, these include; using certified, disease-free seed and disease tolerant varieties where possible.

They also recommend rotating melons with breaks of at least 2–3 seasons with cereals, legumes or brassicas, because the disease stays in the soil for a long time.

They suggest destroying any volunteer crops by burying outside of fields and pruning plants to reduce humidity and increase airflow.