Group 7 herbicides

DCMU (3-(3,4-dichlorophenyl)-1,1-dimethylurea) is an algicide and herbicide of the aryl urea class that inhibits photosynthesis. It was introduced by Bayer in 1954 under the trade name of Diuron. ==History== In 1952, chemists at E. I. du Pont de Nemours and Company patented a series of aryl urea derivatives as herbicides. Several compounds covered by this patent were commercialized as herbicides: chlortoluron (3-chloro-4-methylphenyl) and DCMU, the (3,4-dichlorophenyl) example. Subsequently, over thirty related urea analogs with the same mechanism of action reached the market worldwide. ==Synt

Propanil is a widely used contact herbicide. With an estimated use of about 8 million pounds in 2001, it is one of the more widely used herbicides in the United States. Propanil is said to be in use in approximately 400,000 acres of rice production each year. Propanil was introduced in 1960. It is also used in Australia,, India and Uganda.

Chloroxuron is a phenylurea herbicide that appears as an odorless and colorless powder or white crystals. Phenylurea pesticides are characterized for their agricultural use to control weed growth, acting as photosynthesis inhibitors. These herbicides can either be endocrine disruptors, or have ecotoxic or genotoxic effects.

Chlortoluron, chlorotoluron and CTU are the common names for an organic compound of the phenylurea class of herbicides used to control broadleaf and annual grass weeds in cereal crops.

Tebuthiuron is a nonselective broad spectrum herbicide of the urea class. It is used to control weeds, woody and herbaceous plants, and sugar cane. It is absorbed by the roots and transported to the leaves, where it inhibits photosynthesis. The ingredient was discovered by Air Products and Chemicals, but was registered by Elanco in the United States in 1974, and later sold to Dow AgroSciences.

Fluometuron is an herbicide. In the United States it was approved for use on cotton and sugarcane crops in 1974, but since 1986 is only approved for use on cotton.

Monolinuron is a pesticide, more specifically a selective systemic herbicide and an algaecide. As an herbicide, it is used to control broad-leaved weeds and annual grasses in vegetable crops such as leeks, potatoes, and dwarf French beans. Monolinuron affects the photosynthesis in weeds. Following uptake of monolinuron through roots and leaves of weeds, monolinuron causes early symptoms of yellowing and die-back of the leaves, eventually resulting in weed death. In fishkeeping, it is used to control blanket weed and hair algae.

Linuron is a phenylurea herbicide that is used to control the growth of grass and weeds for the purpose of supporting the growth of crops like soybeans. It is registered for use in India.

Isoproturon (IPU) is a urea class selective herbicide, which has been used to control annual grasses and many broad leafed weeds in wheat, barley, rye and triticale.