RIMSULFURON (MATRIX)

Mode of Action: amino acid synthesis inhibition

Specific Mode: inhibits ALS-AHAS enzyme
(stops production of isoleucine, leucine and valine)

Chemical Family: sulfonylurea

Uptake: foliar and root

Movement: systemic throughout plant

Common Application: early post-emergence

Weed Control: grasses and broadleaves
(Major use is control of triazine-resistant weeds as pigweeds.)
[For examples, grasses include foxtails, volunteer cereals and corn, crabgrass and fall panicum, and broadleaves include kochia, mustards, pigweeds, and partial control of hairy nightshade, common ragweed and common lambsquarter.)

Weed Stage: pre-emerged and early post-emerged

Injury by Rimsulfuron

Potato Injury: Growing cells (meristems) slowly stop growing as amino acid reservoir depletes and proteins aren't synthesized. Symptoms are similar to other sulfonylureas and to imidazolinones. Plants may become stunted, and both leaves and stems may turn yellow (chlorosis) and/or purple. Severe injury may result in death of terminal growing points. Growth stops shortly after application but discolorations appear gradually, one to two weeks.

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