Herbicides are best understood and compare by know their alive element and understanding how they work . Many brand name of herbicides are marketed which use one active component or a combination of active ingredients that have been approve and registered for use by the Environmental Protection Agency ( EPA ) . Spectracide Grass and Weed Killer , containing the active ingredient diquat , and Roundup , containing the active factor glyphosate , are postemergent , nonselective herbicide that are apply to grass actively growing above the soil .

Nonselective Herbicides

Both Spectrum Weed and Grass Killer and Roundup are nonselective herbicides , signify they kill most or all industrial plant , including pot . They should be used before a lawn is planted or to kill weeds in situation or in specific region such as beside sidewalks . Young pot are easy to kill with postemergent herbicides . They do not work well if skunk are emphasize by drought or have commence to produce seeds .

Contact vs. Systemic

Spectracide Weed and Grass Killer destroys plant on contact . It kill only that part of the locoweed with which it has direct tangency , and it does not belt down underground rhizomes or tuber . If weeds mature back from rhizomes or Tuber , several coating may be take to obliterate weeds . Roundup is a systemic Orcinus orca ; it move inside the plant with body of water and nutrient . It is utilitarian for large weeds , but it may take longer to kill weeds .

Spectracide Action

Diquat dibromide , unremarkably called diquat , is the combat-ready ingredient in Spectracide Grass and Weed Killer . Spectracide is spray on plant leaves or an entire plant ; it pour down them by causing them to dry out out quickly . Diquat kill only that part of the plant that it physically touches , and it does not leave trace amounts in the soil , water or on works . Diquat is widely used to control the flowering of sugar cane , to drink down seed crops and potato vine and to hold aquatic locoweed .

Roundup Action

Glyphosate , the active component in Roundup , mimicker and immobilise part of a mote called phosphoenolpyruvate , commonly called PEP , that is central to the metabolism of both industrial plant and animals . Glyphosate moves within a plant , killing all of it , and it is useful for killing older weeds . It bolt down all annual and perennial plants including broad - entrust weeds such as dandelions , weedy grasses , sedge and woody plants . Roundup is used among a variety of crops and on non - cropland .

Caution

Both Spectracide Grass and Weed Killer and Roundup are toxic if ingest or inhaled in large amounts . The European Union prohibits the use of herbicides hold back glyphosate on the terra firma that it is an environmental hazard .

References

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