2,4-d
2,4-D
2,4-Dichlorophenoxyacetic acid (pronounced two-four-dee), commonly referred to as 2,4-D, is a systemic herbicide used in the control of broadleaf weeds. It is the most widely used herbicide in the world, and the third most commonly used in North America.
Etymology
The name 2,4-D refers to the two chlorine atoms (at the 2nd and 4th positions) and the carboxylic acid group (-COOH) attached to the phenyl ring. The "D" in 2,4-D stands for dichlorophenoxyacetic, which is derived from the Greek words "di" meaning two, "chloro" meaning green, "phenoxy" meaning light, and "acetic" referring to vinegar.
Usage
2,4-D is used in many agricultural and horticultural applications. It is used to control weeds in cereal crops, pastures, and non-crop areas. It is also used in the home and garden sector for lawn and turf care.
Related Terms
- Herbicide: A substance that is toxic to plants and is used to destroy unwanted vegetation.
- Weed: A plant considered undesirable, unattractive, or troublesome, especially one that grows where it is not wanted and often grows or spreads fast or takes the place of desired plants.
- Agriculture: The science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.
- Horticulture: The art or practice of garden cultivation and management.
Health Effects
Exposure to 2,4-D can cause a range of health effects, from minor skin rashes to serious disruptions of the endocrine system. It is classified as a possible human carcinogen by the International Agency for Research on Cancer (IARC).
Environmental Impact
2,4-D is highly toxic to aquatic life and can cause long-term adverse effects in the aquatic environment. It is also toxic to bees and other beneficial insects.
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