Biology and Management of Potato Nematodes

Abstract

Potato cyst nematodes (PCNs), specifically Globodera rostochiensis and Globodera pallida, are significant pests affecting potato crops globally. These nematodes cause considerable yield losses and are difficult to manage due to their resilient cysts that persist in soil for many years. This review examines the biology of PCNs, including their life cycle, host range, and the symptoms and damage they cause. Management strategies discussed include cultural practices (crop rotation, resistant varieties, sanitation, trap crops), biological control (natural enemies, biopesticides, nematophagous fungi), and chemical control (nematicides, fumigants). An integrated pest management (IPM) approach, combining multiple tactics, is emphasized. Regulatory measures like quarantine and certification programs are also addressed. Advances in genetic research, diagnostics, and field trials are highlighted as promising developments for enhancing nematode control. The review underscores the need for a multifaceted strategy to mitigate the impact of PCNs on potato production.