robert woolley dave wilson nursery hickman ca l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Robert Woolley Dave Wilson Nursery Hickman, CA PowerPoint Presentation
Download Presentation
Robert Woolley Dave Wilson Nursery Hickman, CA

Loading in 2 Seconds...

play fullscreen
1 / 10

Robert Woolley Dave Wilson Nursery Hickman, CA - PowerPoint PPT Presentation


  • 157 Views
  • Uploaded on

Robert Woolley Dave Wilson Nursery Hickman, CA. growers of deciduous fruit, nut & shade trees for commercial growers & the home garden. Dave Wilson Nursery. primarily field-grown, trees sold bareroot some stock grown in containers 1 to 2 years in ground zero tolerance for nematodes.

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 'Robert Woolley Dave Wilson Nursery Hickman, CA' - marius


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
robert woolley dave wilson nursery hickman ca

Robert WoolleyDave Wilson NurseryHickman, CA

growers of deciduous fruit, nut & shade trees

for commercial growers

& the home garden

slide2

Dave Wilson Nursery

  • primarily field-grown, trees sold bareroot
  • some stock grown in containers
  • 1 to 2 years in ground
  • zero tolerance for nematodes
slide3

Dave Wilson Nursery

trees sold to commercial growers must be produced under CA Dept of Food & Agriculture (CDFA) Nematode Certification Program

CDFA’s Nematode Certification Program requires soil treatment or nematode sampling

soil treatment must eliminate nematodes to 4 to 5 feet deep, for 1 to 2 years

slide4

3 soil treatments used in CA for control of nematodes in field grown deciduous trees:

  • methyl bromide with chloropicrin
  • Telone II (1,3-dicholoropropene)
  • Vapam (metam sodium)
slide5

methyl bromide

  • only soil treatment effective in “heavy” soils
  • only nematicide in general use that

also effectively controls weeds

  • granted limited use in CA nurseries by Montreal Protocol, under QPS exemption
  • rates of chloropicrin from odorant to

as high as 33% (strawberries up to 50% “pic”)

  • a “biocide”, so it disrupts soil ecology
slide6

Telone II

  • approx 95% of CA tree nursery Telone II treatments are done under tarp--tarping may provide some weed control
  • use limited by “township caps”
  • 30 days (minimum) to plant back
  • putatively more benign to soil ecology than methyl bromide
slide7

Vapam

  • requires water as carrier to target pest,

but sprinkler application limited as it’s

highly volatile

  • drip application impractical in nurseries
  • very limited use with Telone II due to

cumbersome application rig

slide8

non-chemical alternatives

crop rotation and/or extended fallow

-maybe OK--limited by time required

mechanical (super-heated water/steam)

-questionable efficacy & cost?

Star Wars devices

-cost? & soil ecology concerns

slide9

other “alternatives”

methyl iodide

-little to no interest due to phytotoxicity

propargyl bromide

-tends to explode

Nemacur, Vydate & Furidan (sp?)

-registered for use in CA via drip

but not used due to impracticality

brassicas & other veges

-insufficient nematode kill

-impractical

slide10

next steps?

  • plant breeding for immunity
  • -very long term but important to
  • pursue
  • novel approaches to killing nematodes

and controlling weeds & disease

-new chemicals?

-genomics?

  • Grow trees solely in containers

-the ultimate solution?