Tupersan (siduron) can be used at time of seeding to control which weeds in the seedbed, and is not for use on which grasses?

Tupersan (siduron) can be used at time of seeding to control which weeds in the seedbed, and is not for use on which grasses?

• A. Crabgrass and foxtail; warm-season grasses
• B. Crabgrass and corn; cool-season grasses
• C. Foxtail and barnyardgrass; warm-season grasses
• D. Wild oats and foxtail; cool-season grasses

Answer: (A)

Tupersan (siduron) is a preemergent herbicide used at seeding to prevent the germination of certain annual grasses in a seedbed. It works by inhibiting the seeds of those grasses from sprouting, giving newly seeded turf a better chance to establish with fewer weeds. It specifically targets crabgrass and foxtail when applied at the time of seeding. It’s not approved for use on warm-season grasses because the label restricts its use on those species; applying it to warm-season grasses can injure the seedlings. So the best-fit statement is that Tupersan controls crabgrass and foxtail and is not for use on warm-season grasses.

Tupersan (siduron) is a preemergent herbicide used at seeding to prevent the germination of certain annual grasses in a seedbed. It works by inhibiting the seeds of those grasses from sprouting, giving newly seeded turf a better chance to establish with fewer weeds. It specifically targets crabgrass and foxtail when applied at the time of seeding. It’s not approved for use on warm-season grasses because the label restricts its use on those species; applying it to warm-season grasses can injure the seedlings. So the best-fit statement is that Tupersan controls crabgrass and foxtail and is not for use on warm-season grasses.