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Xylachlor
Xylachlor is a selective herbicide, used to pre-emergently control annual grasses on cereals, wheat, soy and rice. It is an anilide and a (chloro) acetanilide. As of 2023 it is considered obsolete, but may still be in use. It was manufactured by American Cyanamid under the "Combat" trademark, registered in August 1979 and expired (by non-renewal) in 1986. Compared to the fellow acetanilides alachlor, acetochlor and metolachlor, xylachlor had the weakest control of pigweed and setaria, though the greatest selectivity. Xylachlor is also less detrimental to sorghum ''Sorghum bicolor'', commonly called sorghum () and also known as great millet, broomcorn, guinea corn, durra, imphee, jowar, or milo, is a species in the Poaceae, grass genus ''Sorghum (genus), Sorghum'' cultivated for its grain. The grain i ..., but this is offset by the need for higher application rates to achieve similar weed control. Xylachlor's safety is not well studied. Prediction software indicates th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbicide
Herbicides (, ), also commonly known as weed killers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page for EPA reports on pesticide use ihere Selective herbicides control specific weed species while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes called "total weed killers") kill plants indiscriminately. The combined effects of herbicides, nitrogen fertilizer, and improved cultivars has increased yields (per acre) of major crops by three to six times from 1900 to 2000. In the United States in 2012, about 91% of all herbicide usage, was determined by weight applied, in agriculture. In 2012, world pesticide expenditures totaled nearly US$24.7 billion; herbicides were about 44% of those sales and constituted the biggest portion, followed by insecticides, fungicides, and fumigants. Herbicide is also used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anilide
In organic chemistry, anilides (or phenylamides) are a class of organic compounds with the general structure . They are amide derivatives of aniline (). Preparation Aniline reacts with acyl chlorides or carboxylic anhydrides to give anilides. For example, reaction of aniline with acetyl chloride provides acetanilide (). At high temperatures, aniline and carboxylic acids react to give anilides. Uses * Herbicides * Fungicides - Oxycarboxin, Carboxin Carboxin is a narrow-spectrum fungicide used as a seed treatment in agriculture to protect crops from fungal diseases. It was first marketed by Uniroyal in 1969 using their brand name Vitavax. The compound is a benzanilide analog that combines a ... References External links * {{organic-chemistry-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acetanilide
Acetanilide is the organic compound with the formula . It is the N-acetylated derivative of aniline. It is an odourless solid chemical of leaf or flake-like appearance. It is also known as ''N''-phenylacetamide, acetanil, or acetanilid, and was formerly known by the trade name Antifebrin. Preparation and properties Acetanilide can be produced by reacting acetic anhydride with aniline: :C6H5NH2 + (CH3CO)2O → C6H5NHCOCH3 + CH3COOH The preparation used to be a traditional experiment in introductory organic chemistry lab classes, but it has now been widely replaced by the preparation of either paracetamol or aspirin, both of which teach the same practical techniques (especially recrystallization of the product) but which avoid the use of aniline, a suspected carcinogen. Acetanilide is slightly soluble in water, and stable under most conditions. Pure crystals are plate shaped and appear colorless, white, or in between. Applications Acetanilide is used as an inhibitor of hyd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Cyanamid
American Cyanamid Company was an American manufacturing conglomerate. It began as a fertilizer company and added many additional lines of business before merging with American Home Products in 1994. The combined company sold off most of its divisions, adopted the name of its remaining Wyeth division, and was bought by Pfizer in 2009, becoming defunct as a separate concern. History The company was founded by engineers Frank S. Washburn and Charles H. Baker in New York City in 1907, to capitalize on a German patent they had licensed for the manufacture of nitrogen products for fertilizer. The company's name is derived from the chemical ''calcium cyanamide'', the fertilizer they would manufacture. They soon set up headquarters in Nashville, investing a million dollars in several corporations underpinning the manufacturing operation to be set up in nearby Muscle Shoals, Alabama (sometimes called Mussel Shoals), 120 miles from Nashville, on the Tennessee River. These planned ope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alachlor
Alachlor is an herbicide from the chloroacetanilide family. It is an odorless, white solid. The greatest use of alachlor is for control of annual grasses and broadleaf weeds in crops. Use of alachlor is illegal in the European Union and no products containing alachlor are currently registered in the United States. Its mode of action is elongase inhibition, and inhibition of geranylgeranyl pyrophosphate (GGPP) cyclisation enzymes, part of the gibberellin pathway. It is marketed under the trade names Alanex, Bronco, Cannon, Crop Star, Intrro, Lariat, Lasso, Micro-Tech and Partner.Arnold P. Appleby, Franz Müller, Serge Carpy “Weed Control“ in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. Uses The largest use of alachlor is as a herbicide for control of annual grasses and broadleaf weeds in crops, primarily on corn, sorghum, and soybeans. Application details Alachlor mixes well with other herbicides. It is marketed in mixed formulations with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acetochlor
Acetochlor is an herbicide developed by Monsanto Company and Zeneca. It is a member of the class of herbicides known as chloroacetanilides. Its mode of action is elongase inhibition, and inhibition of geranylgeranyl pyrophosphate (GGPP) cyclization enzymes, part of the gibberellin pathway. It carries high risks of environmental contamination. Manufacture Acetochlor is manufactured in two steps from 2-ethyl-6-methylaniline. A reaction with chloroacetyl chloride gives an anilide which is treated with chloromethyl ethyl ether and sodium hydroxide to form the herbicide. : Uses In the United States, acetochlor was registered by the EPA as a direct substitute for many herbicides of known concern. The EPA imposed several restrictions and conditions on the use of acetochlor. It is approved for pre-emergence application or for pre-planting application with soil incorporation, in corn. (maize) at 5 litres / hectare (1835g / hectare of a.i.) It is the main active ingredient in Acenit, Keyst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metolachlor
Metolachlor is an organic compound that is widely used as an herbicide. It is a derivative of aniline and is a member of the chloroacetanilide family of herbicides. It is highly effective toward grasses. Agricultural use Metolachlor was developed by Ciba-Geigy. Its acts by inhibition of elongases and of the geranylgeranyl pyrophosphate (GGPP) cyclases, which are part of the gibberellin pathway. It is used for grass and broadleaf weed control in corn, soybean, peanuts, sorghum, and cotton. It is also used in combination with other herbicides. Metolachlor is a popular herbicide in the United States. As originally formulated metolachlor was applied as a racemate, a 1:1 mixture of the (''S'')- and (''R'')-stereoisomers. The (''R'')-enantiomer is less active, and modern production methods afford a higher concentration of S-metolachlor, thus current application rates are far lower than original formulations. Production and basic structure Metolachlor is produced from 2-ethyl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pigweed
Pigweed can mean any of a number of weedy plants which may be used as pig fodder: * ''Amaranthus'' species ** ''Amaranthus albus'', white pigweed, tumble pigweed ** '' Amaranthus blitoides'', prostrate pigweed ** '' Amaranthus californicus'', California pigweed ** '' Amaranthus fimbriatus'', fringed pigweed ** '' Amaranthus hybridus'', smooth pigweed ** '' Amaranthus palmeri'', the 'pigweed' resistant to glyphosate in the US Southeast ** ''Amaranthus retroflexus'', redroot pigweed * ''Chenopodium album'' white goosefoot * ''Polygonum aviculare ''Polygonum aviculare'' or common knotgrass is a plant related to buckwheat and dock. It is also called prostrate knotweed, birdweed, pigweed and lowgrass. It is an annual found in fields and wasteland, with white flowers from June to October. I ...'' * '' Portulaca'' species See also * Hogweed {{Plant common name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Setaria
''Setaria'' is a widespread genus of plants in the grass family. The name is derived from the Latin word ''seta'', meaning "bristle" or "hair", which refers to the bristly spikelets. The genus includes over 100 species distributed in many tropical and temperate regions around the world,Aliscioni, S., et alAn overview of the genus ''Setaria'' (Poaceae: Panicoideae: Paniceae) in the Old World: Systematic revision and phylogenetic approach.Abstract. Botany 2004. Salt Lake City. August 3, 2004. and members are commonly known as foxtail or bristle grasses. Description The grass is topped by a cylindrical long-haired head, which tend to droop when ripe. The seeds are less than in length. Species , Plants of the World Online accepted the following species: ; Formerly included Numerous species were once considered members of ''Setaria'' but have since been reassigned to the genera '' Brachiaria'', '' Dissochondrus'', '' Echinochloa'', '' Holcolemma'', '' Ixophorus'', '' Oplismen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sorghum
''Sorghum bicolor'', commonly called sorghum () and also known as great millet, broomcorn, guinea corn, durra, imphee, jowar, or milo, is a species in the Poaceae, grass genus ''Sorghum (genus), Sorghum'' cultivated for its grain. The grain is used as food by humans, while the plant is used for animal feed and ethanol production. Sorghum originated in Africa, and is widely cultivated in tropical and subtropical regions. Sorghum is the world's fifth-most important cereal crop after rice, wheat, maize, and barley. Sorghum is typically an annual, but some cultivars are perennial. It grows in clumps that may reach over high. The grain is small, in diameter. Sweet sorghums are cultivars grown for forage, syrup production, and ethanol. They are taller than those grown for grain. Description Sorghum is a large stout grass that grows up to tall. It has large bushy flowerheads or panicles that provide an edible starchy grain with up to 3,000 seeds in each flowerhead. It grows ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbicides
Herbicides (, ), also commonly known as weed killers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page for EPA reports on pesticide use ihere Selective herbicides control specific weed species while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes called "total weed killers") kill plants indiscriminately. The combined effects of herbicides, nitrogen fertilizer, and improved cultivars has increased yields (per acre) of major crops by three to six times from 1900 to 2000. In the United States in 2012, about 91% of all herbicide usage, was determined by weight applied, in agriculture. In 2012, world pesticide expenditures totaled nearly US$24.7 billion; herbicides were about 44% of those sales and constituted the biggest portion, followed by insecticides, fungicides, and fumigants. Herbicide is also used i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
