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  2. 2,4-Dichlorophenoxyacetic acid - Wikipedia

    en.wikipedia.org/wiki/2,4-Dichlorophenoxyacetic_acid

    2,4-Dichlorophenoxyacetic acid is an organic compound with the chemical formula Cl 2 C 6 H 3 OCH 2 CO 2 H.It is usually referred to by its ISO common name 2,4-D. [4] It is a systemic herbicide that kills most broadleaf weeds by causing uncontrolled growth, but most grasses such as cereals, lawn turf, and grassland are relatively unaffected.

  3. 2,4-DB - Wikipedia

    en.wikipedia.org/wiki/2,4-DB

    2,4-DB or 4-(2,4-dichlorophenoxy)butyric acid is a selective systemic phenoxy herbicide used to control many annual and perennial broad-leaf weeds in alfalfa, peanuts, soybeans, and other crops. Its active metabolite, 2,4-D, inhibits growth at the tips of stems and roots. It is classified in toxicity class III.

  4. List of Northern American nectar sources for honey bees

    en.wikipedia.org/wiki/List_of_Northern_American...

    Western US – One of the best spring forage sources for honeybees. Blooms 45–60 days and continuously produces nectar throughout the day. Can be seeded several times per year. Prefers 3 ft of topsoil. 180–1,500 pounds honey per acre, depending on soil quality and depth; 300–1000 pounds of pollen. [9] G, H Plantain: Plantago Major ...

  5. Glyphosate - Wikipedia

    en.wikipedia.org/wiki/Glyphosate

    For 360 grams per litre (0.013 lb/cu in) formulations, European regulations allow applications of up to 12 litres per hectare (1.1 imp gal/acre) for control of perennial weeds such as couch grass. More commonly, rates of 3 litres per hectare (0.27 imp gal/acre) are practiced for control of annual weeds between crops. [52]

  6. Herbicide - Wikipedia

    en.wikipedia.org/wiki/Herbicide

    In Iowa 89% of waterhemp samples resist two or more herbicides, 25% resist three, and 10% resist five. [64] As of 2023, Palmer amaranth with resistance to six different herbicide modes of action has emerged. [71] Annual bluegrass collected from a golf course in the U.S. state of Tennessee was found in 2020 to be resistant to seven herbicides at ...

  7. Glyphosate-based herbicides - Wikipedia

    en.wikipedia.org/wiki/Glyphosate-based_herbicides

    The glyphosate-based herbicide RoundUp (styled: Roundup) was developed in the 1970s by Monsanto. Glyphosate was first registered for use in the U.S. in 1974. [4] Glyphosate-based herbicides were initially used in a similar way to paraquat and diquat, as non-selective herbicides. Attempts were made to apply them to row crops, but problems with ...