In this issue, we highlight a practical disease management solution for durian growers facing black head disease, especially during rainy seasons when humidity is high and infection risk increases.

Understanding Durian Black Head Disease

Durian black head disease is commonly linked to Phytophthora palmivora, an oomycete pathogen that can infect the trunk through wounds or weakened bark. Once symptoms appear, growers may notice dark, wet-looking lesions that gradually spread along the trunk. If not managed early, the disease can weaken tree health and affect future yield.

VALIS-M: Systematic Protection Against Oomycete Disease

VALIS-M contains Valifenalate and Mancozeb, offering a systematic approach to suppressing oomycete-related diseases. Valifenalate helps interfere with pathogen development, while Mancozeb supports broader disease protection. Together, they help slow disease spread and support better disease control in durian orchards.

Field Results in a Gua Musang Durian Orchard

In a Gua Musang durian orchard, a D200 black thorn durian tree showed visible black head disease symptoms on the trunk. After the infected area was cleaned, VALIS-M was applied together with atomized oil to improve coverage and penetration. Around seven days after treatment, the infected area began to dry, the disease stopped spreading, and the wound gradually recovered.

For durian growers, early prevention and timely treatment are key to protecting tree health. With proper orchard monitoring, sanitation, and the right fungicide programme, VALIS-M can help reduce disease risk and support healthier durian production.

At Advansia, we continue to focus on practical, field-tested solutions that match the real conditions faced by Malaysian growers. Whether the need is better flower retention, stronger fruit development, or more reliable disease control, timely action and suitable crop strategies remain key to achieving more stable results in the field.

📌 Explore more solutions or contact our team for customized advice at www.advansia.com