PCN Flashcards
What are the two species of PCN?
Globodera rostochinesis and Globodera pallidia
Which species of PCN are more widespread?
Globodera pallidia
How many eggs per PCN cyst?
600
How are PCN larvae attracted to the potato crop?
Chemical exudates from the roots, attract for feeding
What colour are mature cysts
red-brpwn
What happens to the female PCN?
Mature and swell, they are fertilised by the males in the soil
How long are PCN viable in the soil?
10 years
What damage do PCN have?
Feeding on te root - affects root function,crop develops new roots, yield loss
What kind of land is at higher risk of PCN?
LOw lying wet areas
Name two resistant varieites to Globodera rostochiensis
Maris Piper and Cara
What happens to the female PCN on resistant varieties
They fail to mature and cannot form cysts
Name a poor variety for PCN resistance
Pentland Dell
What are the cultural control methods for PCN?
Widen rotation, not using farm saved seed, cleaning machinery, controlling volunteers and hosts, resistant varieites, soil testing , trap cropping
Name a tolerant variety
Royal
What trap crop is used as a control of PCN
Sticky nightshade
