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A herbicide is a pesticide used to kill unwanted plants. Selective herbicides kill specific targets while leaving the desired crop relatively unharmed. Some of these act by interfering with the growth of the weed and are often based on plant hormones. Herbicides used to clear waste ground are nonselective and kill all plant material with which they come into contact. Some plants produce natural herbicides, such as the genus Juglans (walnuts). Herbicides are widely used in agriculture and in landscape turf management. They are applied in total vegetation control (TVC) programs for maintenance of highways and railroads. Smaller quantities are used in forestry, pasture systems, and management of areas set aside as wildlife habitat.
History
Prior to the widespread use of chemical herbicides, cultural controls, such as altering soil pH, salinity, or fertility levels, were used to control weeds. Mechanical control (including tillage) was also (and still is) used to control weeds.
The first widely used herbicide was 2,4-dichlorophenoxyacetic acid, often abbreviated 2,4-D. It was developed by a British team during World War II and first saw widespread production and use in the late 1940s. It is easy and inexpensive to manufacture, and kills many broadleaf plants while leaving grasses largely unaffected (although high doses of 2,4-D at crucial growth periods can harm grass crops such as maize or cereals). 2,4-D's low cost has led to continued usage today and it remains one of the most commonly used herbicides in the world. Like other acid herbicides, current formulations utilize either an amine salt (usually trimethyl amine) or one of many esters (ester) of the base compound. These are easier to handle than the acid.
More on [ Herbicide ]
Pierce Brothers Organic Red Eye Express Whole Bean, 12 Ounce Bags: No pesticides, herbicides or synthetic ferti.. http://bit.ly/4YK270
ORGANICS2YOU (ORGANICS 2 YOUR DOOR) Sat, 19 Dec 2009 02:42:02 -0000
Pierce Brothers Organic Red Eye Express Whole Bean, 12 Ounce Bags: No pesticides, herbicides or synthetic ferti.. http://bit.ly/4YK270
The EPA considers 60% of all herbicides, 90% of all fungicides and 30% of all insecticides carcinogenic
yournutrition (Vicki Berry) Sat, 19 Dec 2009 00:54:13 -0000
The EPA considers 60% of all herbicides, 90% of all fungicides and 30% of all insecticides carcinogenic
@boulderbud are you able to guarantee that your medicine has no pesticides, herbicides, fungicides, aspergillus mold, etc... on it? mmj
mmj420 (MedMan) Fri, 18 Dec 2009 17:57:44 -0000
@boulderbud are you able to guarantee that your medicine has no pesticides, herbicides, fungicides, aspergillus mold, etc... on it? mmj
@gulpanag vermi culture plant,herbal paints,movment sensors,solar mobile chargers,solar cooker,herbal cosmetics,herbal pesticides/herbicides
johntification (V FRANCIS JOHN) Fri, 18 Dec 2009 13:11:08 -0000
@gulpanag vermi culture plant,herbal paints,movment sensors,solar mobile chargers,solar cooker,herbal cosmetics,herbal pesticides/herbicides
Monsanto soy beans: genetically modified so farmers spray w Monsanto herbicides 2 kill weeds 'without harming crop' http://bit.ly/8pcqxf
suzieis (Suzie Graham) Fri, 18 Dec 2009 12:09:28 -0000
Monsanto soy beans: genetically modified so farmers spray w Monsanto herbicides 2 kill weeds 'without harming crop' http://bit.ly/8pcqxf
#crime Pilots in Colombia face a dust-up with narco growers: TUMACO, Colombia â Spraying 800 pounds of herbicides... http://bit.ly/83V1A0
svcrime (svcrime) Fri, 18 Dec 2009 04:05:23 -0000
#crime Pilots in Colombia face a dust-up with narco growers: TUMACO, Colombia — Spraying 800 pounds of herbicides... http://bit.ly/83V1A0
Exp. Ltd. - Chinese manufacturer of the herbicide safeners dichlormid and AD-67, as well as a wide range of chemical intermediates.
Aero Agro Chemical Industries Ltd - Indian manufacturer and exporter of 2,4D and formulations.
Meta Description: [ Aero Agro Chemical Industries Ltd. is one of the leading manufacrurers of weedicides and herbicides in south east Asia ]
Alcotan Laboratories - Manufactures herbicides, fungicides, insecticides and foliar fertilizers. Located in Seville Spain.
BASF Forestry - Site with technical support and details of the herbicide products of BASF Corporation used in US forestry.
Changzhou Rongxiang Biochemical Institute - Chinese chemical company producing a range of herbicides, fine chemical intermediates and pharmaceuticals.
Meta Description: [ ChangZhou RongXiang Biochemical Institute is
maily engaged in manufacturing of insecticides ]
Eco-Safety Products LLC - Distributor of Deadeye, All Natural Organic Weed Killer
Meta Description: [ Green Building products and wholesale supply distributor. Eco Safety Products supplies non toxic floor coatings, safety tapes, ipm-natural pest control and more! ]
Golsam Gorgan Chemicals - Herbicide and micronutrient formulation company in Iran.
Meta Description: [ Golsam Gorgan Chemicals is a pesticide formulation factory in Iran, according to FAO standards. ]
Huazhong Biotechnology Herbicides Co Ltd - Chinese herbicide trading company.
Meta Description: [ China supplier of herbicides. Huazhong Biotechnology Herbicides Co., Ltd. - Acetochlor, Alachlor, Ametryn, Atrazine, etc. is one quality China supplier for you to purchase herbicides. ]
Kelinon Agrochemical Co Ltd - Chinese manufacturing enterprise in the line of pesticides.
Kingtai Chemicals Co Limited - Basic Chinese manufacturer of herbicides,insecticides,fungicides and growth regulators. Located in Jiaxing, Zhejiang Province.
Morris Grain Co. - Selling agricultural chemicals to the public and dealers.
Organic Interceptor - Organic products for control of weeds, moulds and lichens. Produced by Australian company.
Meta Description: [ Announcing the Worlds First Certified Organic Products for the control and eradication of Weed, Moulds and Lichens ]
Sanonda Agrochemicals Pty Ltd - Australian company offering generic herbicides and insecticides to support high yields and improved efficiency in agriculture.
Meta Description: [ Australian company offers Selective Herbicides and Total Herbicides. Provides a profile for all herbicides and other agrochemicals ]
SSI Maxim Co., Inc. - Manufacturer and supplier of granular non-crop herbicides. Based in Texas.
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Syngenta Crop Protection - US subsidiary of one of the world's top herbicide producers.
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