Chemistry of chemicals used in growing plants

By Gradyandwilliscool
  • 2500 BCE

    First recorded use of pesticides

    First recorded use of pesticides
    The first recorded use of insecticides is about 2500 BCE by Sumerians who used sulphur compounds to control insects and mites.
  • 1100 BCE

    #2

    #2
    about 1100 BC the Chinese were using mercury and arsenical compounds for controlling body lice.
  • 1500

    #3

    #3
    Arsenous oxide was used at a rodenticide in the 16th century in Europe

  • #4

    #4
    Up until the 1940s inorganic substances, such as sodium chlorate and sulphuric acid, or organic chemicals derived from natural sources were still widely used in pest control. However, some pesticides were by products of coal gas production or other industrial processes.

  • #5

    #5
    in the 1990s research activities concentrated on finding new members of existing families that have greater selectivity and better environmental and toxicological profiles. In addition, new families of agrochemicals have been introduced to the market such as the triazolopyrimidine, triketone and isoxazole herbicides, the strobilurin and azolone fungicides and chloronicotinyl, spinosyn, fiprole and diacylhydrazine insectides.

  • #6

    #6
    Today the pest management toolbox has expanded to include use of genetically engineered crops designed to produce their own insecticides or exhibit resistance to broad spectrum herbicide products or pests. These include herbicide tolerant crops like soybeans, corn, canola and cotton and varieties of corn and cotton resistant to corn borer and bollworm.