Stem nematode crenicauda

Systematic position. Pratylenchoides crenicauda belongs to the order Tylenchida and the family Pratylenchidae. It is a microscopic phytonematode that adopts a semi-endoparasitic lifestyle, causing significant damage to the root systems of various agricultural and wild plant species.

Host range. This nematode species is a polyphage. It primarily affects cereals (wheat, barley, rye), potatoes, sugar beets, and various fodder grasses. The pest is capable of surviving in the soil for extended periods, remaining viable until a suitable host plant becomes available for infestation.

Biology and life cycle. The life cycle of the pest involves several larval stages separated by molts. The nematode invades plant root tissues, feeding on intracellular contents. Optimal conditions for reproduction include moderate soil moisture and the presence of healthy, living roots. Under adverse environmental conditions, the nematode can enter a diapause state.

Nature of damage and pathogenicity. The primary symptoms of infestation include stunted growth, chlorosis, and daytime wilting of plants. The roots often show necrotic lesions and patches of decay, which inhibit water and nutrient uptake, leading to a significant reduction in overall crop yield and quality.

• Implementation of strict crop rotation cycles using non-host crops.
• Usage of pathogen-free planting material to prevent field introduction.
• Effective management and removal of weed species that act as nematode reservoirs.
• Application of agrotechnical practices that improve soil aeration and structure.
• Utilization of specialized nematicides in areas with high infestation pressure.