dwight k jesseman
Download
Skip this Video
Download Presentation
Dwight K. Jesseman

Loading in 2 Seconds...

play fullscreen
1 / 42

Dwight K. Jesseman - PowerPoint PPT Presentation


  • 229 Views
  • Uploaded on

Dwight K. Jesseman. St. Johns County Agricultural Agent. Nematology. Basic Principles for Master Gardeners. Types of Nematodes. Plant Parasitic Predatory Entomophagous Free Living Marine. Plant Parasitic. Predatory. Entomophagous. Free Living. Marine. Morphology and Anatomy.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Dwight K. Jesseman' - PamelaLan


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
dwight k jesseman

Dwight K. Jesseman

St. Johns County

Agricultural Agent

nematology
Nematology
  • Basic Principles for Master Gardeners
types of nematodes
Types of Nematodes
  • Plant Parasitic
  • Predatory
  • Entomophagous
  • Free Living
  • Marine
morphology and anatomy
Morphology and Anatomy
  • Animals
  • Round Worms
  • Size 0.25mm to 3.0mm
  • Layered Cuticle
  • Vermiform, Globose, Kidney Shaped
life cycle and reproduction
Life Cycle and Reproduction
  • Egg - 50 to 500
  • Four Juvenile Stages
  • Adult
  • Male and Female in Most Species
  • Life Cycle Dependant on Soil Temperatures
  • Move Slowly
feeding
Feeding
  • Oral Stylet or Spear
  • Inject Enzymes
  • Digest Cell Contents
host parasite relationship
Host- Parasite Relationship
  • Migratory Ectoparasitic
    • Ring, Spiral
  • Migratory Endoparasitic
    • Lesion, Burrowing
  • Sedentary Endoparasitic
    • Root-Knot, Cyst, Reniform, Citrus
diagnoses
Diagnoses
  • Very Difficult at Times
  • Poor Growth
  • Combination of Problems
  • Assay of Soil and/or Plant Tissue
  • Symptoms
above ground
Above-Ground
  • Rarely Sufficient
  • Chlorosis
  • Dieback
  • Melting out
  • Reduced Growth
  • Water Stressed
below ground
Below-Ground
  • Root Galls
  • Root Swellings
  • Abbreviated Root System
  • Root Rot
  • Cyst Nematodes
field history
Field History
  • Gradual Decline
  • Area - Small to Large
  • Rotation of Crops
laboratory assay
Laboratory Assay
  • Soil and Plant Tissue
  • Relative Population Densities
  • Economic Thresholds
nematode management
Nematode Management
  • Prevention
  • Crop Rotation
  • Crop Root Destruction
  • Flooding and Fallowing
  • Resistance
  • Biological Control
  • Nematicides
home garden
Home Garden
  • Container Growing
  • Site Selection
  • Crop Rotation
  • Soil Tillage and Root Destruction
  • Amendments
    • Organic Matter
    • Green Manures
home garden33
Home Garden
  • Planting Time
  • Nematode - Free Transplants
  • Resistant Varieties
  • Soil Solarization
  • Chemical Control
soil solarization
Soil Solarization
  • Cover for at least 4 weeks
  • Well Tilled
  • High Moisture
  • Slightly Raised Beds
  • Crown the Bed
soil solarization35
Soil Solarization
  • Clear Polyethylene
  • Thin Plastic 1 to 2 mil
  • Leave in Place Until Planting
  • Avoid Contaminated Plants or Soil
soil temperatures
Soil Temperatures
  • Tarped Soils 111 to 122
  • 115 - Water Molds
  • 120 - Nematodes
  • 140 - Most Fungi
  • 150 - Most Soil Insects
  • 160 - Most Viruses and Bacteria
  • 170 - Most Weed Seeds
ornamentals
Ornamentals
  • Site Preparation
  • Treat Soil
    • Fumigation
    • Soil Solarazition
  • Replace Infested Soil
  • Root Barriers
ornamentals38
Ornamentals
  • Nematode-Free Stock
  • Well Adapted Plants
  • Resistant Plants
  • Maintenance
  • Mulches
  • Other Pests
  • Chemical Control
slide39
Turf
  • Biological Controls
  • Resistant Plants
  • Chemical Control
    • Fumigation Before Planting
resistance
Resistance
  • Bahiagrasses - Tolerant of Most
  • Centipedegrasses - Ring, Sting, Sheath
  • St. Augustinegrasses -Sting, Lance
  • Bermudagrasses - Sting, Lance, Stubby
  • Zoysiagrasses - Most nematodes
basimid granular use
Basimid Granular Use
  • Compost Piles
  • Potting Soils
  • Seed and Propagation Beds
  • Soil Media
  • Establishing Turf and Ornamental Sites
  • Not for Use in Vegetable Gardens
  • READ THE LABEL, IT IS THE LAW
ad