Why was MSMA banned?

Why MSMA Was Banned MSMA contains an organic form of arsenic that is relatively nontoxic. However, in an inorganic state, arsenic is highly toxic. And in 2006, water samples from some golf courses in Florida tested high in arsenic, which prompted the EPA to cancel the registration for ag use.

Does MSMA need a surfactant?

It is also formulated with a surfactant, so no additional surfactants or wetting agents is necessary for effective control.

What is MSMA herbicide used for?

MSMA is a broad spectrum herbicide used to control grasses and broadleaf weeds. It can only be used on cotton, sod farms, golf courses, and highway rights-of-way, and cannot be used in Florida except for on cotton in certain counties.

Is MSMA a restricted use herbicide?

MSMA was once a widely used herbicide effective in eliminating a wide range of weeds but it has since been labeled as a restricted-use product that licensed applicators can use for certain sites like golf courses and sod farms.

Is MSMA harmful to humans?

Introduction: Monosodium methanearsonate (MSMA) is an organo-arsenic containing herbicide. There is scant information available concerning the toxicity of this chemical in humans. Conclusion: MSMA produces early GI symptoms and very high levels of arsenic in blood and urine, but no evidence of long-term toxicity.

When should I spray MSMA?

Herbicides containing MSMA are most effectively applied when grassy weeds such as crab grass and Dallis grass have emerged in the early spring and are actively growing. Repeat applications may be required through the late spring and summer.

How often can you apply MSMA?

In order to control crabgrass and sedges effectively, you need to apply MSMA twice at an interval of 5 to 7 days.

How long does it take MSMA to dry?

Answer: We recommend waiting until the treated area is dry or at least 4 hours to water after applying MSMA Target 6.6. 65 of 69 people found this answer helpful.

Can MSMA be used on Bermuda grass?

The main selective weed killer for Bermuda is MSMA or DSMA. These arsenicals are good on grassy weeds and smutgrass. Repeat the arsenical application using the 2 pounds per active ingredient rate after seven to 10 days on tougher weeds.

Is MSMA safe for lawns?

MSMA Target 6. 6 is only labeled for commercial turf like golf courses and sod farms, and it is not safe for use on home lawns. The label does not give timing for seeding for this reason. 6 is only labeled for commercial turf like golf courses and sod farms, and it is not safe for use on home lawns.

Is MSMA safe around trees?

Post-Emergence Grass Killers – This group of herbicides is composed of arsonates such as MSMA and DSMA which are applied to turf for post-emergent control of crabgrass and other annual grasses. Arsonates are not root- absorbed and are safe around woody vegetation.

Does MSMA have a shelf life?

MSMA has a shelf life of 3 to 4 years when stored in a cool dry environment. Once mixed product should be sprayed completely and not left in solution.