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  2. Chlorothalonil - Wikipedia

    en.wikipedia.org/wiki/Chlorothalonil

    Chlorothalonil-containing products are sold under the names Bravo, Echo, and Daconil. It was first registered for use in the US in 1966. In 1997, it was the third most used fungicide in the US, behind only sulfur and copper, with 12 million pounds (5.4 million kilograms) used in agriculture that year. [3]

  3. Fungicide use in the United States - Wikipedia

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

    Control by fungicide use was not practical. The spinach industry began to expand in 1947 when a strain of plant was introduced from Iran that was proven to be resistant to downy mildew. Therefore, it was not until the late 1970s that a new strain of the disease made downy mildew a problem for U.S. growers.

  4. Copper pesticide - Wikipedia

    en.wikipedia.org/wiki/Copper_pesticide

    The use of copper pesticide in viticulture in 1940. Copper pesticide is applied as a contact protective foliar spray, so it remains deposited on leaf surfaces. 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]

  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. Federal Insecticide, Fungicide, and Rodenticide Act - Wikipedia

    en.wikipedia.org/wiki/Federal_Insecticide...

    A few exceptions allow a pesticide to be exempt from registration requirements. There must be a label on each pesticide describing, in detail, instructions for safe use. Under the act, the EPA must identify each pesticide as "general use", "restricted use", or both. "General use" labeled pesticides are available to anyone in the general public.

  7. Polypore - Wikipedia

    en.wikipedia.org/wiki/Polypore

    For instance Amylocystis lapponica and Fomitopsis rosea are dominant species in North European old-growth spruce forests from Poland to Norway, but absent in managed forests. Climate change may cause a problem for polypores that are already dependent on a few fragments of old-growth forests and may be unable to migrate with changing vegetation.

  8. Spruce broom rust - Wikipedia

    en.wikipedia.org/wiki/Spruce_broom_rust

    Spruce broom rust or yellow witches' broom rust is a fungal plant disease caused by the basidiomycete fungus known as Chrysomyxa arctostaphyli.It occurs exclusively in North America, with the most concentrated outbreaks occurring in northern Arizona and southern Colorado on blue and Engelmann spruce, as well as in Alaska on black and white spruce. [2]

  9. Choristoneura fumiferana - Wikipedia

    en.wikipedia.org/wiki/Choristoneura_fumiferana

    Choristoneura fumiferana, the eastern spruce budworm, is a species of moth of the family Tortricidae native to the eastern United States and Canada. The caterpillars feed on the needles of spruce and fir trees. Eastern spruce budworm populations can experience significant oscillations, with large outbreaks sometimes resulting in wide scale tree ...

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