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Prism™ SG Herbicide

PCP #30057 · Corteva Agriscience Canada Company · Herbicide

Group 2

Group 2 ALS-inhibitor (sulfonylurea) soluble granule herbicide containing 25% rimsulfuron for post-emergent control of quackgrass, certain annual grasses and broadleaf weeds, and suppression of lamb's-quarters, in potatoes, tomatoes, highbush and lowbush blueberries, caneberries, grapes, pome fruit, stone fruit and cranberry.

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Registered uses (14)

Crop × pest × application rate combinations from the official label. Rates converted to per-acre. PHI is the pre-harvest interval; REI is the restricted-entry interval. Always confirm against the official label PDF before applying.

Crop	Target	Rate	PHI	REI
Blueberry	Annual grasses (1-6 leaves, up to tillering); Barnyard Grass, Fall Panicum, Green Foxtail, Lamb's-Quarters (suppression), Redroot Pigweed, Quackgrass, Yellow Foxtail, Witchgrass	24.3 g/acre	420 d	12 d
Blueberry	Barnyard Grass, Fall Panicum, Green Foxtail, Lamb's-Quarters (suppression), Redroot Pigweed, Quackgrass, Yellow Foxtail, Witchgrass	24.3 g/acre	21 d	12 d
Caneberry	Barnyard Grass, Fall Panicum, Green Foxtail, Lamb's-Quarters (suppression), Redroot Pigweed, Quackgrass, Yellow Foxtail, Witchgrass	24.3 g/acre	21 d	12 d
Cranberry	Barnyard Grass, Fall Panicum, Green Foxtail, Lamb's-Quarters (suppression), Redroot Pigweed, Quackgrass, Yellow Foxtail, Witchgrass	24.3 g/acre	60 d	12 d
Grapes	Barnyard Grass, Fall Panicum, Green Foxtail, Lamb's-Quarters (suppression), Redroot Pigweed, Quackgrass, Yellow Foxtail, Witchgrass	24.3 g/acre	21 d	12 d
Pome Fruit	Barnyard Grass, Fall Panicum, Green Foxtail, Lamb's-Quarters (suppression), Redroot Pigweed, Quackgrass, Yellow Foxtail, Witchgrass	24.3 g/acre	7 d	12 d
Potato	Barnyard Grass, Fall Panicum, Green Foxtail, Lamb's-Quarters (suppression), Redroot Pigweed, Quackgrass, Yellow Foxtail, Witchgrass	24.3 g/acre	30 d	12 d
Potato	Barnyard Grass, Fall Panicum, Green Foxtail, Lamb's-Quarters (suppression), Redroot Pigweed, Quackgrass, Yellow Foxtail, Witchgrass

Adjuvant and tank-mix guidance

Adjuvant requirements, compatibility notes, and mixing restrictions from the official label. Always confirm against the official label PDF before mixing.

Guidance	Adjuvant	Rate
Required	Citowett Plus, Agral 90 or Ag-Surf Prism SG Herbicide must be applied with a recommended non-ionic surfactant, either Citowett Plus, Agral 90 or Ag-Surf at 2 L per 1000 L spray solution (0.2% v/v). Control will not be achieved if surfactant is not applied with Prism SG Herbicide.	2 L per 1000 L spray solution (0.2% v/v)
Required	recommended surfactant Apply Prism SG Herbicide with a recommended surfactant postemergence when the majority of the quackgrass shoots are actively growing	–
Required	Citowett Plus, Agral 90 or Ag-Surf Apply 60 grams/ha of Prism SG Herbicide as a broadcast spray, with a recommended non-ionic surfactant (Citowett Plus, Agral 90 or Ag-Surf) at 2.0 litres per 1,000 litres of spray solution (0.2%v/v)	2.0 litres per 1,000 litres of spray solution (0.2% v/v)
Required	Citowett Plus, Agral 90 or Ag-Surf apply 60 g/ha of Prism SG Herbicide with a recommended non-ionic surfactant (Citowett Plus, Agral 90 or Ag-Surf) at 2.0 litres per 1,000 litres of spray solution (0.2%v/v)	2.0 litres per 1,000 litres of spray solution (0.2% v/v)
Required	Citowett Plus, Agral 90 or AgSurf Apply a tankmix of Prism SG Herbicide plus Tricor 75DF Herbicide postemergent plus a non-ionic surfactant, such as Citowett Plus, Agral 90 or AgSurf at 2L per 1000L of spray solution (0.2% v/v)	2 L per 1000 L of spray solution (0.2% v/v)
Required	recommended non-ionic surfactant Apply 60 grams/ha of Prism SG Herbicide as a postemergent broadcast spray, with a recommended non-ionic surfactant, to potatoes prior to initiation of flowering.	–
Required	Citowett Plus, Agral 90 or AgSurf Apply Prism SG Herbicide at a rate of 60 grams/hectare + 0.2% v/v non-ionic surfactant (Citowett Plus, Agral 90 or AgSurf) to transplanted processing tomatoes.	0.2% v/v
Required	Citowett Plus, Agral 90 or AgSurf apply Prism SG Herbicide at a rate of 60 grams/hectare + 0.2% v/v non-ionic surfactant (Citowett Plus, Agral 90 or AgSurf).	0.2% v/v
Required	Agral 90 Use with a non-ionic surfactant, Agral 90 at 0.2% v/v.	0.2% v/v
Required	Agral 90 apply Prism SG Herbicide as a single post-emergent spray at a rate of 140 grams/hectare + 0.2% v/v non-ionic surfactant (Agral 90) to field tomatoes	0.2% v/v
Required	Citowett Plus, Agral 90, or AgSurf make a single application early postemergence to actively growing weeds at a rate of 60 g/ha plus a recommended non-ionic surfactant such as Citowett Plus, Agral 90, or AgSurf at 2 L per 1000 L spray solution (0.2 % v/v)	2 L per 1000 L spray solution (0.2% v/v)
Required	Citowett Plus, Agral 90, or AgSurf make a single application early postemergence to actively growing weeds at a rate of 60 g/ha plus a recommended non-ionic surfactant such as Citowett Plus, Agral 90, or AgSurf at 2 L per 1000 L spray solution (0.2% v/v)	2 L per 1000 L spray solution (0.2% v/v)
Required	Citowett Plus, Agral 90, or Ag-Surf make a single application early post-emergence to actively growing weeds at a rate of 60 g/ha plus a recommended non-ionic surfactant such as Citowett Plus, Agral 90, or Ag-Surf at 2 L per 1000 L spray solution (0.2 % v/v)	2 L per 1000 L spray solution (0.2% v/v)
Required	Citowett Plus, Agral 90, or Ag-Surf Use a rate of 60 g/ha plus a recommended non-ionic surfactant such as Citowett Plus, Agral 90, or Ag-Surf at 2 L per 1000 L spray solution (0.2 % v/v).	2 L per 1000 L spray solution (0.2% v/v)

Registered uses (14)

Registered targets

Adjuvant and tank-mix guidance