RECOGNIZING A NEMATODE PROBLEM

SYMPTOMS & SIGNS OF NEMATODE DAMAGE

• FIELD AND VEGETABLE CROPS
• SUGARBEETS
• GRAPEVIES
• STONE FRUIT AND NUT TREE CROPS
• OTHER STRESSES
• FIELD SYMPTOMOLOGY
• REPLANT DISEASE

SAMPLING FOR NEMATODES

• DISTRIBUTION WITHIN A FIELD
• HOW TO TAKE A SAMPLE
• SAMPLING TOOLS
• TIME OF THE YEAR TO SAMPLE
• CROPPING HISTORY EFFECTS
• SOIL AND MANAGEMENT PATTERNS
• VERTICAL AND HORIZONTAL DISTRIBUTION IN SOIL
• DISTRIBUTION IN ORCHARDS AND VINEYARDS
• DISTRIBUTION IN ANNUAL CROPS
• SAMPLING NURSERY STOCK
• SUMMARY

TYPES OF DIAGNOSTIC LABORATORIES
EXTRACTION EQUIPMENT & PROCEDURES
INTERPRETATION OF LABORATORY REPORTS

• SUITABILITY OF SAMPLE
• EFFICIENCY OF EXTRACTION METHOD
• PATHOGENICITY OF NEMATODES PRESENT
  • TYPES OF EVIDENCE USED TO DETERMINE "PATHOGENICITY"
  • NEMATODES ASSOCIATED WITH WALNUTS
    
  • NEMATODES ASSOCIATED WITH PRUNES
    
  • NEMATODES ASSOCIATED WITH STRAWBERRIES
    
  • ROOT KNOT (MELOIDOGYNE ) SPECIES COMMON IN CALIFORNIA
    
  • ISOZYME ELECTROPHORESIS AND PCR AMPLIFICATION OF DNA
    
  • HOST RACES AND PATHOTYPES
    
  • LESION (PRATYLENCHUS ) SPECIES FOUND IN CALIFORNIA
    
  
  
• BIOLOGICAL AND ENVIRONMENTAL FACTORS THAT MIGHT INFLUENCE PATHOGENICITY
  • NEMATODE/FUNGUS INTERACTIONS:
    
  • NEMATODE/BACTERIA ASSOCIATIONS
    
  • RING NEMATODE - BACTERIAL CANKER COMPLEX
    
  • VIRUS VECTORS
    
  • TEMPERATURE AT TIME OF PLANTING
    
  • ROOT-KNOT NEMATODE ON PROCESSING TOMATOES - SAN JOAQUIN VALLEY
    

NEMATODE DIAGNOSTIC LABS:

NORTH CAROLINA

ARKANSAS

GEORGIA

VIRGINIA

FLORIDA

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