Once produced by the DuPont company in the United States , Bladex was a weed killer used extensively to kill emerge broadleaf locoweed and eatage in crop fields of pea , onions , tater , sweet Indian corn , garbanzo and beans . By 2002 , DuPont and the FDA ( Food and Drug Administration ) phased out the use of Bladex nationwide . It continues to be used in other countries although the World Health Organization cites concern over its effects on lineament of drinking piss .
Active Ingredient
The fighting element in Bladex is a triazine chemical called cyanazine . It is water soluble and typically discover in a ashen upstanding or powdery form .
Hazards
Bladex is not toxic when used accord to get label directions , but is poisonous when absorbed through the skin . The chemical cyanazine does strip through grease , specially sand or loam type to penetrate and contaminate freshwater . Both underground water board and surface lake , ponds and streams receive tincture of the chemical substance after rains and irrigation .
Uses
Bladex is used as a post - emerging weed killer to kill sprouting weeds , after the seeds or roots germinate and expose green stem and leave behind to a height no outstanding than 3 centimeter ( a little more than 1 inch ) . It demonstrates excellent effectiveness battling and killing plague of broadleaf weeds and grass . While Bladex covering did not harm desirable crops , over - app program or ill - timed applications could cause leaf price or death to crop plants unintentionally .
Considerations
Since cyanazine does not persist in soil and leaches through , the effectiveness of the chemical substance in Bladex greatly diminishes in and is not commend in sandy or arenaceous loam soils . Moreover , the obtuse particles in heavy clay soil also diminishes effectiveness . Therefore , although Bladex allow an excellent means to control an immense list of various grass in crop fields , soil precondition sham its results . Simply put , only " perfect " soil stipulation maximized its performance in kill weeds .
Effective green goddess control lasts from four to 10 weeks bet on soil temperature , soil wet , grunge microbic organisms , territory pH , and extent of soil leaching , according to the Bladex product recording label .
Application
After being dissolved in water , Bladex is sprayed topically onto both small weeds ' leaf and peculiarly the territory surface . For uptake of the chemical by plants , irrigation wet the soil to facilitate the penetration into the top few inches of soil for roots to absorb . Avoid program by aerial crop plane since overlap occurs and may result in harm to craw .
