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However, this does not apply for a normal use on common trees with green leaves. Diluted solutions of lime sulfur (between 1:16 and 1:32) are also used as a dip for pets to help control ringworm (a fungus), mange and other dermatoses and parasites. Undiluted lime sulfur is corrosive to skin and eyes and can cause serious injury like blindness.
Apple trees are especially interesting as a research model in agriculture since it is known that apple production requires intensive spray schedules for control of pathogenic fungus V. inaequalis with as many as 15-22 sprays of fungicides per season in humid climate. [31] [32]
Some trees were sprayed in 1945 at the end of the growing season and some trees were not. All of the trees that were sprayed in the fall of 1945 survived and produced fruit in 1946. Yields for the unsprayed trees that survived were 36 pounds per tree. Sprayed trees yielded nearly three times more than the controls with 107 pounds per tree. [22]
The fungus causes a small canker on the Native American Hazelnut, Corylus americana. However, on the introduced and commercially important European Hazelnut, Corylus avellana, it causes a lethal disease. [104] The cankers caused by EFB slowly expand and kill the tree over the course of several years if diseased tree limbs are not removed in ...
Burgundy mixture is used as a preemptive fungicide prevention for trees and small fruits. This occurs because the Cu(II) ions are capable of interfering with enzymes found within the spores of many fungi, preventing germination from occurring. [ 6 ]
Chlorothalonil (2,4,5,6-tetrachloroisophthalonitrile) is an organic compound mainly used as a broad spectrum, nonsystemic fungicide, with other uses as a wood protectant, pesticide, acaricide, and to control mold, mildew, bacteria, algae. [2]