Ability to Respond Total:14 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:Medium
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
Natural dispersal not a factor (juveniles may travel very short distances to roots). Spread to new areas as cysts on seed potatoes, nursery stock, soil, or flower bulbs. May also be spread in irrigation water.
2
Spread Amount
Develops mainly on potatoes, though tomatoes and eggplants are also attacked (other Solanaceae may act as hosts as well).
2
Damage
Notes
Score
Ecological
Soil insecticides would be a primary means for management and these could present water quality issues.
2
Agricultural
Potatoes are main host, other Solanaceae may be hosts as well. Extreme infestations decrease yields to less than weight of initial seed potatoes.
4
Infrastructure
0
Cultural
0
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Total
10
Ability to Respond
Ease of Response
Notes
Score
Detection
Symptoms are non-specific. Nematodes are very small (cysts or females must be found in soil or on host roots), about 450 microns. Males are larger but not diagnostic to species.
1
Control
Crop rotation is best way to keep population down (7 yr rotation in UK, less in warmer areas). Eggs in cysts may be extremely persistent (up to 28 yrs). Resistant strains and nematicides help provide adequate control. Soil fumigants used on tomatoes.
