Weedicide Wiki - What is the weedicide?
Herbicides, also commonly known as weedkillers, are chemical substances used to control unwanted plants. Selective herbicides control specific weed species, while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes called total weedkillers in commercial products) can be used to clear waste ground, industrial and construction sites, railways and railway embankments as they kill all plant material with which they come into contact. Apart from selective/non-selective, other important distinctions include persistence (also known as residual action: how long the product stays in place and remains active), means of uptake (whether it is absorbed by above-ground foliage only, through the roots, or by other means), and mechanism of action (how it works). Historically, products such as common salt and other metal salts were used as herbicides, however these have gradually fallen out of favor and in some countries a number of these are banned due to their persistence in soil, and toxicity and groundwater contamination concerns. Herbicides have also been used in warfare and conflict. Modern herbicides are often synthetic mimics of natural plant hormones which interfere with growth of the target plants. The term organic herbicide has come to mean herbicides intended for organic farming. Some plants also produce their own natural herbicides, such as the genus Juglans (walnuts), or the tree of heaven; such action of natural herbicides, and other related chemical interactions, is called allelopathy. Due to herbicide resistance - a major concern in agriculture - a number of products combine herbicides with different means of action. Integrated pest management may use herbicides alongside other pest control methods. In the US in 2007, about 83% of all herbicide usage, determined by weight applied, was in agriculture. In 2007, world pesticide expenditures totaled about $39.4 billion; herbicides were about 40% of those sales and constituted the biggest portion, followed by insecticides, fungicides, and other types. Smaller quantities are used in forestry, pasture systems, and management of areas set aside as wildlife habitat..
What does the word weedicide mean? Find synonyms, antonyms and the meaning of the word weedicide in our free online dictionary! Find words starting with weedicide and anagrams of weedicide.
Definitions of "weedicide"
- Weedkiller. noun
The word "weedicide" in example sentences
Precision farming uses expensive equipment, consisting of a global positioning system GPS and an onboard computer, to improve the efficiency of seeding rates, chemical fertilizer, and pesticide and weedicide applications.. [Diffusion of Innovations]
UNDP gave 360,000 kumala cuttings worth $18,000, 1320 liters of weedicide worth $20,116.80 and $71,242.50 worth of vegetable seeds.. [Fiji Times Online - Local News]
Panicked by his actions, the killer, Chunlal Ramsaroop, 27, drove to his home, parked his car, took a bottle of weedicide and walked to Martin Trace, off Arena Road, Freeport, where he ingested the weedicide.. [newsday.co.tt]
A soft drink bottle containing a weedicide was found near his body.. [TrinidadExpress Today's News]
Dhanassar, 31, a construction worker chopped his 33-year-old wife to death at their Tabaquite home on Monday before ending his own life by ingesting a deadly weedicide.. [newsday.co.tt]
Police suspect Ramdeen had laced two bottles of a pear-flavoured soft drink with the weedicide, Lanate.. [newsday.co.tt]
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