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DUTCH TRIG ® Preventative treatment of American elms against Dutch elm disease






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DUTCH TRIG ® Preventative treatment of American elms against Dutch elm disease. Presentation setup:. Dutch Elm Disease History and Goals Characteristics How does Dutch Trig ® work The injection Re search and re sults. The problem: Dutch elm disease. Himalayan origin (not Dutch .. )
DUTCH TRIG ® Preventative treatment of American elms against Dutch elm disease

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Dutch trig preventative treatment of american elms against dutch elm disease l.jpgSlide 1

DUTCH TRIG®Preventative treatment of American elms against Dutch elm disease

Presentation setup l.jpgSlide 2

Presentation setup:

  • Dutch Elm Disease

  • History and Goals

  • Characteristics

  • How does Dutch Trig® work

  • The injection

  • Research and results

The problem dutch elm disease l.jpgSlide 3

The problem: Dutch elm disease

  • Himalayan origin (not Dutch..)

  • Fungal infection, Ophiostoma novo-ulmi

  • Vascular wilt

  • Infection from:

  • Elm bark beetles

  • Root grafts

History dutch trig l.jpgSlide 4

History Dutch Trig®

  • 1980: Biological control using bacteria

  • 1989: Discovery of Verticillium protectiveeffect

  • 1991: Development of the Tree injection tool

  • 1992: Full registration in Europe

  • 1995: Introduction USA

  • 1998: Experimental Use Permit

  • 2005: Fully EPA Registered

The goal l.jpgSlide 5

The goal

  • Prevent elms from dying

  • Reduceamount of chemicals used

  • Treat large numbers

Basic requirements l.jpgSlide 6

Basic requirements

  • Biological Control

  • Specialized application tool

The vaccine l.jpgSlide 7

The vaccine

  • Verticillium spores in distilled water

  • Common soil organism

  • White variant of Verticillium albo-atrum

  • Produced in the Netherlands

How it works short version l.jpgSlide 8

How it works (short version)

  • Inject Dutch Trig

  • Spores germinate

  • Tree reacts

  • Result: Induced resistance

Where does the vaccine go l.jpgSlide 9

Where does the vaccine go?

Spacing: 4”

When is dutch trig effective l.jpgSlide 10

When is Dutch Trig® effective

  • On healthy elms in areas where DED prevails

  • Injected on a yearly basis, on time application

What endangers effectiveness

Root grafts with diseased trees

Injecting diseased trees

Why inject l.jpgSlide 11

Why inject

  • Use as little control agent as possible

  • Closed injection system

  • Use Bio-agent directly on targeted tree only

  • Ensure direct uptake by tree

  • Minimal wounding

  • Speed of application

When and where to inject l.jpgSlide 12

When and where to inject

  • When: At 25% leaf expansion (May 1-10th)

  • When tree is transpiring

  • Before beetle infection occurs

  • Where: At convenient breast height

  • Every 4 inches circumference

How to inject l.jpgSlide 13

How to inject

  • Check for DED signs (on tree and in the area)

  • Push chisel through the bark

  • Pullthe trigger once

  • Twist the gun slightly sideways

Slide14 l.jpgSlide 14

Dutch TrigTree injector

Efficacy study u of wisconsin l.jpgSlide 15

Efficacy study U. of Wisconsin

  • Controlled Greenhouse Study

  • Using ‘Ramets’

  • 4 treatment groups:

  • Water (control)

  • Dutch Trig

  • Dutch elm disease

  • Dutch Trig + Dutch elm disease

  • 17 different clones

  • 2 strains of DED

  • 10 ramets per group

Tracking ded infection response l.jpgSlide 16

100%

75%

50%

DEDTrace

25%

0%

Tracking DED infection response

Ramet

Cutting

X-section

Overall results l.jpgSlide 17

Overall Results

Effect is resistance dependant l.jpgSlide 18

Effect is Resistance dependant

The hague l.jpgSlide 19

The Hague

Denver l.jpgSlide 20

Denver

Slide21 l.jpgSlide 21

Efficacy in The Netherlands (35.000 elms yearly)

Dutch trig s pathogenicity l.jpgSlide 22

Dutch Trig’s Pathogenicity

  • Ulmus americana

  • U. procera

  • U. hollandica

  • U. carpinifolia

  • U. pumila

  • Malus spp.

  • Castanea spp.

  • Prunus serrata

  • Aesculus hippocastanum

  • Viburnum spp.

  • Sorbus aucuparia

  • Magnolia spp.

  • Betula papyrifera

  • Acer saccharum

  • Quercus rubra

  • Crataegus monogyna

  • Acer macrophyllum

  • Cornus nuttallii

  • Prunus lusitanica

  • Rhododendron spp.

  • Fagus spp.

Ded control with dutch trig l.jpgSlide 23

DED Control with Dutch Trig:

  • + reduce losses (+/- 1%)

  • + yearly check of elm by arborist

  • + affordable

  • + biological, non toxic

  • + fast, safe, easy

  • + active

  • +/- yearly treatment

  • - not effective against root graft infections

  • not curative

  • cooled transport

Dutch trig l.jpgSlide 24

Dutch Trig®

  • A safe and easy to use biological tool to assist in protecting urban elm populations

Midwest Distribution:

More Info:

www.dutchtrig.com


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