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  2. Copper pesticide - Wikipedia

    en.wikipedia.org/wiki/Copper_pesticide

    A small concentration of copper ions may be taken up by plants as essential nutrients. Copper foliar sprays are also applied to correct plant copper deficiency. [8] Excess absorbed copper ions can kill sensitive cells in copper sensitive plants. The leaves of stone fruit trees are more sensitive to copper phytotoxicity than apple leaves

  3. Fungicide use in the United States - Wikipedia

    en.wikipedia.org/wiki/Fungicide_use_in_the...

    In plants surveyed in North Carolina it was found that 40% of plants were infected. [50] Symptoms of root rot include yellowing or reddening of leaves, heavy defoliation, and stunted plant growth. [60] Today current USDA estimates are that 80% of eastern blueberry acres are infected with root rot and it has the potential to reduce yields by up ...

  4. Bordeaux mixture - Wikipedia

    en.wikipedia.org/wiki/Bordeaux_mixture

    Bordeaux mixture (also called Bordo Mix) is a mixture of copper(II) sulphate (CuSO 4) and quicklime (Ca O) used as a fungicide. It is used in vineyards, fruit-farms, vegetable-farms and gardens to prevent infestations of downy mildew , powdery mildew and other fungi.

  5. Pesticide - Wikipedia

    en.wikipedia.org/wiki/Pesticide

    A crop-duster spraying pesticide on a field A self-propelled crop sprayer spraying pesticide on a field Pesticides are substances that are used to control pests. They include herbicides, insecticides, nematicides, fungicides, and many others (see table). The most common of these are herbicides, which account for approximately 50% of all pesticide use globally. Most pesticides are used as plant ...

  6. Fungicide - Wikipedia

    en.wikipedia.org/wiki/Fungicide

    Contact fungicides are not taken up into the plant tissue and protect only the plant where the spray is deposited. Translaminar fungicides redistribute the fungicide from the upper, sprayed leaf surface to the lower, unsprayed surface. Systemic fungicides are taken up and redistributed through the xylem vessels.

  7. Burgundy mixture - Wikipedia

    en.wikipedia.org/wiki/Burgundy_mixture

    Burgundy mixture, named after the French district where it was first used to treat grapes and vines, [1] is a mixture of copper sulfate and sodium carbonate. This mixture, which can have an overall copper concentration within the range of 1% through 20%, [2] is used as a fungicidal spray for trees and small fruits. [3]

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  9. Wood preservation - Wikipedia

    en.wikipedia.org/wiki/Wood_preservation

    Users shall carefully read and follow the instructions and precautions listed on the product label when using these materials. Copper naphthenate preservatives containing a minimum of 2.0% copper metal are recommended for material originally treated with copper naphthenate, pentachlorophenol, creosote, creosote solution or waterborne ...

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