Aminopyralid

Aminopyralid

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  Chemical structure of Aminopyralid

• 3D space-filling model of Aminopyralid

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  Tomato plant affected by aminopyralid herbicide

Aminopyralid

Aminopyralid is a selective herbicide used primarily for the control of broadleaf weeds in agricultural and non-agricultural settings. It is particularly effective against invasive species and is commonly used in pastures, rangelands, and other areas where grasses are grown.

Chemical Properties

Aminopyralid is a pyridine carboxylic acid herbicide. Its chemical formula is C\(_{6}\)H\(_{4}\)Cl\(_{2}\)N\(_{2}\)O\(_{2}\). It is known for its high selectivity, targeting broadleaf plants while leaving grasses largely unaffected. This selectivity makes it a valuable tool in managing weed populations without damaging desirable grass species.

Mode of Action

Aminopyralid works by mimicking the natural plant hormone auxin. It disrupts the normal growth processes of susceptible plants, leading to uncontrolled growth and eventual plant death. The herbicide is absorbed through the leaves and roots and translocated throughout the plant, affecting the entire organism.

Applications

Aminopyralid is used in a variety of settings, including:

• Agricultural fields: To control broadleaf weeds in crops such as wheat, barley, and oats.
• Pastures and rangelands: To manage invasive species and maintain healthy grasslands.
• Non-crop areas: Such as roadsides, industrial sites, and rights-of-way.

Environmental Impact

Aminopyralid is known for its persistence in the environment. It can remain active in soil for extended periods, which can lead to unintended effects on non-target plants. This persistence is a concern when using manure or compost from animals that have grazed on treated fields, as the herbicide can pass through the digestive system and remain active in the manure.

Safety and Regulations

The use of aminopyralid is regulated in many countries to minimize its impact on non-target species and the environment. Users are advised to follow label instructions carefully and to be aware of the potential for carryover effects in compost and manure.

Related Pages

• Herbicide
• Auxin
• Broadleaf weed
• Pyridine
• Selective herbicide