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Pre-emergent herbicides, those that prevent the seed from germinating, are effective, but the area must first be free of weeds for this type of herbicide to work. Post emergent herbicides, those that kill the growing plant by spraying the green leaves of the plant, may be effective if applied when the plant is very young. [13]
The non-selective herbicide kills weeds top to bottom, roots included, in a matter of minutes. Simply spray directly on weeds until foliage is wet, and let the Natria work its deadly magic.
Trifluralin is a common pre-emergent selective herbicide, a dinitroaniline.With about 14 million pounds (6,400 t) used in the United States in 2001, [3] and 3–7 million pounds (1,400–3,200 t) in 2012, [4] it is one of the most widely used herbicides.
When applied, imazaquin halts weed growth which eventually kills the weed or causes the weed to die due to its incapability to compete with surrounding vegetation. Imazaquin may be applied pre-plant incorporated, pre-plant surface, pre-emergence, or early post-emergence. [13]
In plants, imazapyr disrupts protein synthesis and interferes with cell growth and DNA synthesis. [2] Imazapyr is an ingredient of the commercial product Ortho GroundClear. A related herbicide, imazapic is an ingredient in Roundup Extended Control. Both chemicals are non-selective, long-lasting, and effective in weed control.
Flazasulfuron is a sulfonylurea herbicide used for controlling the unwanted growth of grass, broad-leaved weeds and sedges. The mode of action of flazasulfuron is through the inhibition of the enzyme acetolactate synthase (ALS), which results in the inhibition of amino acid synthesis, cell division and ultimately plant growth. Flazasulfuron can ...