Herbicides: What They Do And The Symptoms That They Trigger

Whether you are producing agricultural crops or maintaining a lawn or home garden, weed control will be important for your overall success. There are numerous ways to control weeds, including biologically, chemically and culturally. All of these options are available in an integrated program that is both economical and environmentally friendly.

Chemical control with paraquat herbicide has been an important method of controlling weeds in crops and home landscapes for years. The modern herbicides are selective and effective. These characteristics make them less damaging to the environment when they are properly used. Although herbicides are common however, few people are aware of how they work to control unwanted plants.

Herbicide application

In general, herbicides are applied either preemergence or postemergence. This means that they are applied either before or after the weeds emerge from the soil and begin to grow. Preemergence herbicides kill weeds just after they begin to germinate or when they emerge from the soil's on the surface. Postemergence herbicides are used to control weeds already in growth and readily visible. You may get more details about Paraquat Herbicide by browsing legal resources site.

Some herbicides are applied to the soil and used by plants that are seedlings or their roots. They are thought to have soil activity. Herbicides that are applied to the plant's foliage exhibit the ability to grow. Some herbicides mix both. Preemergence is a common method of applying herbicides that have a high level of soil activity.

Selectivity

Selectivity is the method by which a herbicide controls or kills certain plants but leaves other plants unharmed. Selectivity could be as simple as controlling broadleaf grass, but not grass. New herbicides offer more advanced selection, and differentiate between grass and broadleaf plants.

Nonselective herbicides do not have any selectivity. These herbicides are able to destroy any plant. The time and location of herbicides can affect the selection. Most herbicides can be harmful, even to normally tolerant plants, if their dose is excessively high.

Special Beacons

Be aware of drift throughout application to ensure plants that aren't target aren't harmed. The application of systemic herbicides immediately following disruption of cell membranes or arsenicals that are organically produced is not recommended. Both diquat and paraquat are nonselective herbicides which are harmful to broadleaf plants and grasses. In peanuts, however, some selectivity can be achieved by using paraquat at the stage of cracking.

Lipid Synthesis Inhibitors

Since they are only effective on annual and perennial grasses, these lipid-synthesis inhibitors make a statement. They do not affect broadleaf grasses. With diclofop being the only exception, these herbicides are applied after emergence and exhibit little or any soil action. Concentrated crop oil or different adjuvant has to be used to increase the absorption of herbicides into the leaf. For maximum effectiveness this herbicide should be applied to actively growing grass weeds. These herbicides won't work as well if the grass weeds are stressed in their growth rate.