Search results
Results From The WOW.Com Content Network
Metribuzin (4-amino-6-tert-butyl-3-(methylthio)-1,2,4-triazin-5(4H)-one) is a herbicide used both pre- and post-emergence in crops including soy bean, potatoes, tomatoes and sugar cane. It acts by inhibiting photosynthesis by disrupting photosystem II. [2] It is widely used in agriculture and has been found to contaminate groundwater. [3]
In 1990 sulcotrione was introduced for post- emergence weed control in corn. Isoxaflutole opened the market more broadly for HPPD inhibitors when it was introduced in 1996 for corn and sugarcane, and for use as a pre-emergence herbicide that could control broadleaf weeds as did sulcotrione, but also additional grass weeds.
Health effects of pesticides may be acute or delayed in those who are exposed. [1] Acute effects can include pesticide poisoning, which may be a medical emergency. [2] Strong evidence exists for other, long-term negative health outcomes from pesticide exposure including birth defects, fetal death, [3] neurodevelopmental disorder, [4] cancer, and neurologic illness including Parkinson's disease ...
However, the use of herbicides can cause phytotoxic effects on non-targeted plants through wind-blown spray drift or from the use of herbicide-contaminated material (such as straw or manure) being applied to the soil. [5] Herbicides can also cause phytotoxicity in crops if applied incorrectly, in the wrong stage of crop growth, or in excess. [1]
Roundup is used most heavily on corn, soy, and cotton crops that have been genetically modified to withstand the chemical, but as of 2012 glyphosate treated approximately 5 million acres in California for crops like almond, peach, cantaloupe, onion, cherry, sweet corn, and citrus, [78] although the product is only applied directly to certain ...
An obvious side effect of using a chemical meant to kill is that one is likely to kill more than just the desired organism. Contact with a sprayed plant or "weed" can have an effect upon local wildlife, most notably insects. A cause for concern is how pests, the reason for pesticide use, are building up a resistance.
Salts and esters of this class of herbicide are active owing to their ability to metabolise to the corresponding parent acid. For example, fenoxaprop-P ethyl [15] was introduced by Bayer Crop Science and quizalofop-P ethyl by Nissan Chemical Corporation, both in 1989. [16] In 1990, Dow introduced cyhalofop-P butyl for the control of weeds in ...
As of 2011, herbicide-resistant GM corn was grown in 14 countries. [4] By 2012, 26 varieties of herbicide-resistant GM maize were authorised for import into the European Union, [5] but such imports remain controversial. [6] Cultivation of herbicide-resistant corn in the EU provides substantial farm-level benefits. [7]