Perennial weeds anaerobic soil disinfection mechanical methods
Download
1 / 22

Perennial weeds: anaerobic soil disinfection & mechanical methods - PowerPoint PPT Presentation


  • 120 Views
  • Uploaded on

Perennial weeds: anaerobic soil disinfection & mechanical methods. Hilfred Huiting, Piet Bleeker & Marleen Riemens EWRS workshop Physical & Cultural Weed Control – Samsun, March 2011. Perennial weeds: setting the scene. Difficult to control:

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 ' Perennial weeds: anaerobic soil disinfection & mechanical methods' - alice


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
Perennial weeds anaerobic soil disinfection mechanical methods

Perennial weeds: anaerobic soil disinfection & mechanical methods

Hilfred Huiting, Piet Bleeker & Marleen Riemens

EWRS workshop Physical & Cultural Weed Control – Samsun, March 2011


Perennial weeds setting the scene
Perennial weeds: setting the scene methods

  • Difficult to control:

    • Species intrinsically are very resilient → exhaust strategy

    • Perennial weed problems take a long breath to control

  • In organic farming:

    • No chemical options

    • Increasing labour cost

  • In conventional farming:

    • Increasing farming scale

      • Weed problems may stay unnoticed longer

      • Tendency towards ”easy” solutions may increase problems

    • Herbicide availability


Research on perennial weeds
Research on perennial weeds methods

  • Two field experiments, in Wageningen and Lelystad, integrating reasearch on:

    • Weed phenology

    • Chemical weed control strategies

    • Non-chemical weed control strategies


Materials methods weeds
Materials & methods: weeds methods

Root pieces planted spring 2009

  • Cirsium arvense – creeping thistle

  • Rorippa sylvestris – creeping yellowcress

  • Sonchus arvensis – field sowthistle

  • Calystegia sepium – bindweed

  • Equisetum arvense – field horsetail

  • Tussilago farfara – coltsfoot

  • Elymus repens – couch grass

  • Rumex obtusifolius – bitter dock

  • Polygonum amphibium – water smartweed


Materials methods treatments
Materials & methods: treatments methods

  • Mechanical weed control

    • Broadcast blade

      • Application at 5 cm depth; ”superficial”

      • Application at 15 cm depth; ”deep”

    • Rod weeder

      • Mounted behind rigid tine cultivator

      • Application at c. 6 cm depth

  • Anaerobic soil disinfection, 11 week period

    • Incorporation of weed biomass and covering

    • Incorporation of weed biomass and additional 40 ton/ha fresh grass and covering


Materials methods treatments1
Materials & methods: treatments methods

  • Mechanical weed control

    • Broadcast blade

      • Application at 5 cm depth; ”superficial”

      • Application at 15 cm depth; ”deep”

    • Rod weeder

      • Mounted behind rigid tine cultivator

      • Application at c. 6 cm depth

  • Anaerobic soil disinfection, 11 week period

    • Incorporation of weed biomass and covering

    • Incorporation of weed biomass and additional 40 ton/ha fresh grass and covering



Mechanical weed control blade
Mechanical weed control – blade methods

Sandy soil

Marine loam soil


Mechanical weed control rod weeder
Mechanical weed control – rod weeder methods

Marine loam soil

Sandy soil


Results sonchus avernsis
Results methodsSonchus avernsis


Results polygonum amphibium
Results methodsPolygonum amphibium


Results tussilago farfara
Results methodsTussilago farfara


Results calystegia sepium
Results methodsCalystegia sepium


Results cirsium arvense
Results methodsCirsium arvense


Results equisetum arvense
Results methodsEquisetum arvense


Results elymus repens
Results methodsElymus repens


Results rorippa sylvestris
Results methodsRorippa sylvestris


Results rumex obtusifolius
Results methodsRumex obtusifolius


Overview efficacy mechanical weed control
Overview efficacy mechanical weed control methods

Efficacy:

  • -: insufficient

  • X: >85%

  • XX: >90%

  • XXX: >95%

  • XXXX: > 99%


Anaerobic soil disinfection
Anaerobic soil disinfection methods

Without grass

With grass



Discussion conclusions
Discussion & conclusions methods

  • Rod weeder very effective after frequent passes

  • Broadcast blade effective as well, if used superficially and frequently

  • Anaerobic soil disinfection may be promissing

  • Results only after one season !!


ad