Capeweed andPaterson’s Control
A little bit about Seymour Ag:•   Website – SeymourAg.com.au•   New company Seymour Ag Supplies•   Been going for 7 months...
Capeweed & Paterson’s Curse
Capeweed & Paterson’s Curse
Capeweed & Paterson’s Curse
Capeweed & Paterson’s Curse
Controlling Paterson’s Curse &           Capeweed  Latest stages to control these weedsWhy??
Capeweed•   Likes false breaks – soil temp. 15 deg•   Early rains with 3-5 weeks dry best•   Rarely germinates after a lat...
Toxicity of Capeweed• accumulate nitrate levels high enough (2-4.7% dry  matter) to cause toxicity to stock especially aft...
Symptoms of Poisioning• Depression, loss of appetite, pale mucous  membranes, salivation, gasping, muscle  tremors, stagge...
Paterson’s Curse• Germinates on false break• Not a good competitor• Can germinate with a summer rain• Seeds at up to 30,00...
Paterson’s Curse• Liver damage is cumulative• Grazing on it in years when there is little• Then suffering when it is a big...
Paterson’s Curse•   Contains damaging alkaloids•   Damages sheep livers•   Copper toxicity ----------- care•   Cumulative•...
ALLELOPATHY Refers to the chemical inhibition of one species by another These chemicals can inhibit root & shoot growth ...
Examples of Allelopathic Plants• Examples are some gums (sugar gum), wattles, Casuarinas,• Lucerne, clover, vetch and Pate...
What does this mean?• These weeds will out compete pasture• Leave bare ground in summer• More potential for these two weed...
Control Methods• Control when the weeds are small• Have some competition for bare space• Plant competitive species        ...
Control Methods              Spray-Graze•    sub-lethal doses of chemicals•    “sweetens” up weeds making it         attra...
Chemical Control    Broadstrike /Multitude•   25g per ha – low rate•   Very “soft”, clover, lucerne, grass safe•   Add wet...
Chemical Control       Trigrex – Nugrex – various• Combination mixed product• Great on smaller weeds• Safe on clovers etc•...
Chemical Control              Agtryne•   Combined trybryne and MCPA•   Single rate – single product•   Great for heavy inf...
Chemical Control      Igran/Salvation + MCPA• Mix the rate to suit the weed size• Start with 300+300 – move up to 500+500 ...
Chemical ControlMetsulfuron – Brushoff, Ally, various• Low rates --- Add wetterCare needs to be taken cleaning sprayer• Wi...
Chemical Control• And of course Amine   625• Only spray between April and August• Must graze or weeds will recover• 500 ml...
Summary1.   Identify the weeds2.   SPRAY EARLY – let the pasture take over3.   Have good pasture species to dominate4.   D...
MOST IMPORTANTSPRAY EARLY    -Plan Now!!See us at Seymour Ag Supplies36 High Street SeymourSite 106 - 107    03 5792 1855 ...
Full PresentationGet the full presentation onOur website –www.SeymourAg.com.auOr leave your name and emailOn the pad or ta...
Capeweed and Paterson’s Curse Control
Capeweed and Paterson’s Curse Control
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Capeweed and Paterson’s Curse Control

  1. 1. Capeweed andPaterson’s Control
  2. 2. A little bit about Seymour Ag:• Website – SeymourAg.com.au• New company Seymour Ag Supplies• Been going for 7 months• Belong to NRI• Staff consists of – Kate – Jeanette – MyselfAim to provide great productsWith good service and good advice
  3. 3. Capeweed & Paterson’s Curse
  4. 4. Capeweed & Paterson’s Curse
  5. 5. Capeweed & Paterson’s Curse
  6. 6. Capeweed & Paterson’s Curse
  7. 7. Controlling Paterson’s Curse & Capeweed Latest stages to control these weedsWhy??
  8. 8. Capeweed• Likes false breaks – soil temp. 15 deg• Early rains with 3-5 weeks dry best• Rarely germinates after a late break• Seed remains in soil for years• On surface lasts for 2 years• Wrapped in wool improves germination
  9. 9. Toxicity of Capeweed• accumulate nitrate levels high enough (2-4.7% dry matter) to cause toxicity to stock especially after spraying with hormone herbicides like 2,4-D• Early season spraying in warmer temperatures and in dull weather is associated with increased risk of toxicity• Avoid grazing with horses, pigs and young or breeding stock. Animals that have suffered previous nutritional stress appear to be more susceptible to poisoning
  10. 10. Symptoms of Poisioning• Depression, loss of appetite, pale mucous membranes, salivation, gasping, muscle tremors, staggering, collapse, coma and death.• Cattle may suffer rapid death within an hour of exposure
  11. 11. Paterson’s Curse• Germinates on false break• Not a good competitor• Can germinate with a summer rain• Seeds at up to 30,000 seeds per sq metre• Extremely toxic to horses• contains compounds known as pyrolizidine alkaloids• the metabolites of which cause cell death in organs throughout the body
  12. 12. Paterson’s Curse• Liver damage is cumulative• Grazing on it in years when there is little• Then suffering when it is a big year• Non-preferred grazing -- first green pick
  13. 13. Paterson’s Curse• Contains damaging alkaloids• Damages sheep livers• Copper toxicity ----------- care• Cumulative• Plants have higher alkaloid levels at flowering
  14. 14. ALLELOPATHY Refers to the chemical inhibition of one species by another These chemicals can inhibit root & shoot growth & nutrient uptake Prevent other plants from using resources
  15. 15. Examples of Allelopathic Plants• Examples are some gums (sugar gum), wattles, Casuarinas,• Lucerne, clover, vetch and Patersons curse and capeweed?
  16. 16. What does this mean?• These weeds will out compete pasture• Leave bare ground in summer• More potential for these two weeds• Paterson’s Curse can produce 30,000 seedsper square metre
  17. 17. Control Methods• Control when the weeds are small• Have some competition for bare space• Plant competitive species – clover, ryegrass
  18. 18. Control Methods Spray-Graze• sub-lethal doses of chemicals• “sweetens” up weeds making it attractive to stock• Must graze heavily after 7 days• Need good mix of other species• Take stock off enabling pasture to recover
  19. 19. Chemical Control Broadstrike /Multitude• 25g per ha – low rate• Very “soft”, clover, lucerne, grass safe• Add wetter• Works best on sunny days• Good on wild radish, mustards,• Add wetter, oil• Add Igran /Salvation for increased control
  20. 20. Chemical Control Trigrex – Nugrex – various• Combination mixed product• Great on smaller weeds• Safe on clovers etc• Graze after will improve control• Stick to the above brands – different solvents• Wetter
  21. 21. Chemical Control Agtryne• Combined trybryne and MCPA• Single rate – single product• Great for heavy infestations• Some clovers are effected• Rates –• Don’t add wetter!!! There is enough in it
  22. 22. Chemical Control Igran/Salvation + MCPA• Mix the rate to suit the weed size• Start with 300+300 – move up to 500+500 as weeds get bigger• Can be used alone if needed but MCPA seems • To soften Salvation • No Wetter • Prefer Salvation as it has a new cold stable formulation!!
  23. 23. Chemical ControlMetsulfuron – Brushoff, Ally, various• Low rates --- Add wetterCare needs to be taken cleaning sprayer• Will kill clover – cannot plant pastureas there is a residual
  24. 24. Chemical Control• And of course Amine 625• Only spray between April and August• Must graze or weeds will recover• 500 mls/ha• Many brands
  25. 25. Summary1. Identify the weeds2. SPRAY EARLY – let the pasture take over3. Have good pasture species to dominate4. Don’t graze good pasture to leave bare ground5. Plant alternative vegetation SPRAY EARLY
  26. 26. MOST IMPORTANTSPRAY EARLY -Plan Now!!See us at Seymour Ag Supplies36 High Street SeymourSite 106 - 107 03 5792 1855 Rob-- 0408 882 698
  27. 27. Full PresentationGet the full presentation onOur website –www.SeymourAg.com.auOr leave your name and emailOn the pad or take a card

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