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The leaves of stone fruit trees are more sensitive to copper phytotoxicity than apple leaves. Copper tolerant plant families include Cruciferae, Caryophyllaceae, Gramineae, Leguminosae and Asteraceae. [9] Copper phytotoxicity worsens under slow drying conditions. Adding surfactants with copper fungicides may increase injury to plant foliage.
Copper naphthenate is classified by EPA as a general use (i.e., a non-restricted use) pesticide by virtue of its relatively benign toxicity profile. [5] Copper naphthenate is the only non-restricted use wood preservative in widespread use for "heavy duty" commodities such as utility poles, railroad crossties and timbers, pilings and fence posts.
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]
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. It is sprayed on plants as a preventive treatment; its mode of action is ...
In an effort to keep a high level of diversity in the cherry fungicide programs and reduce the amount of resistance building up to the DMI fungicides, copper based fungicides can be used with great efficacy to battle the fungus. [18] However, the copper application is associated with noticeable leaf bronzing. [19]
This is a list of fungicides. These are chemical compounds which have been registered as agricultural fungicides . The names on the list are the ISO common name for the active ingredient which is formulated into the branded product sold to end-users. [ 1 ]
For smallholder farmers, this can be cost-prohibitive. Copper-based fungicides, such as Bordeaux mixture, have proven to be effective and economical, and work best when applied at inoculum levels below 10%. [3] [12] Typically copper-based mixtures are used as preventative measures and systemic fungicides are used as curative measures. [8]
Large scale industrial production of basic copper chloride was devoted to making either a fungicide for crop protection or an intermediate in the manufacture of other copper compounds. [6] In neither of those applications was the polymorphic nature of the compound, or the size of individual particles of particular importance, so the ...
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