Joust® is a broad spectrum, systemic fungicide for control of sclerotinia in canola along with suppression of fusarium head blight in barley and wheat.

Technical information

Active ingredient: Group 3 (prothioconazole)
Rainfast: Avoid application if heavy rainfall is imminent
Treatment area: One case treats 60-120 acres at 160-320 mL./ac. (consult label for more information)
Crop staging: Canola: Apply between 20% and 50% bloom. Read label for all other crop staging guidelines.
Notes: Apply prior to disease development. Ground application only. Non-ionic surfactant recommended. For best results apply with minimum 10 gal./ac. 

Registered crops

  • Canola
  • Barley
  • Wheat (spring, durum, winter)
  • Oats
  • Soybeans
  • Lentils
  • Chickpeas
  • Corn

Diseases controlled

  • Sclerotinia stem rot (Sclerotinia sclerotiorum)
  • Fusarium head blight (Fusarium spp.) (suppression)
  • Ascochyta blight (Ascochyta rabiei)
  • Blotch (glume, net, speckled leaf, spot) (Stagonosora nodorum, Pyrenophora teres, Septoria tritici, Cochliobolus sativus)
  • Rhizoctonia crown rot (Rhizoctonia solani)
  • Rusts (Asian soybean, crown, leaf) (Ascochyta rabiei, Puccinia coronate, Puccinia recondata)
  • Scald (Rhynchosporium secalis)
  • Sclerotinia head rot (Sclerotinia sclerotiorum) (suppression)
  • Spot (cercospora leaf, eye, frogeye leaf, tan) (Cercospora beticola, Kabatiella zeae or Aureobasidium zeae, Cercospora sojina, Pyrenophora tritici-repentis)

See product label for full list of diseases controlled.


  • SYSTEMIC FUNGICIDE that is absorbed quickly through the cuticle of the plant
  • FLEXIBLE RATES to accommodate crop condition and disease pressure

Disease control challenge

Sclerotinia sclerotiorum is a constant threat in the primary canola producing regions of Western Canada. Yield losses every year range in the millions of dollars. Scouting and forecasting for the disease is difficult and foliar control options are costly.

Nufarm solution

Joust fungicide provides excellent control of sclerotinia in canola with the label flexibility to tailor control level of sclerotinia risk. Quick movement through the cuticle of the plant and residual systemic activity means Joust quickly provides effective overall plant protection.


For specific crop usage information see label for details