Ability to Respond Total:4 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
This is a common nematode in California. It is CDFA "C" rated. It is of widespread occurance in citrus and has already spread through its expected range. Spreads through nursery stock movement and irrigation water.
2
Spread Amount
Narrow host range, but over a fair portion of the state. Affects citrus and grapes in some areas previously planted to citrus.
3
Damage
Notes
Score
Ecological
Soil-applied pesticides could be a primary means for management and these could present water quality issues.
2
Agricultural
Narrow host range, but economically important (citrus, olive, grape, lilac, persimmon).
3
Infrastructure
0
Cultural
Home-owner citrus production.
1
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Total
11
Ability to Respond
Ease of Response
Notes
Score
Detection
Already widespread in CA throughout expected range. Infected plants exhibit debilitating slow decline, small leaves, twig die- back, reduced foliage, reduced fruit size and number. Roots may have encrusted appearance and clinging soil particles.
0
Control
Control, when performed, is done by property operator/manager as a part of their normal pest management strategy. Some resistant rootstock is available. Hot water treatment of bare-root material.
3
Tools in Place
Notes
Score
Entry
C-rated pest from CDFA; already widely present.
0
Control
C-rated pest from CDFA.
0
Outreach
Not much, even though it is extremely widespread in CA.
