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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]
The purpose of the label is "to provide clear directions for effective product performance while minimizing risks to human health and the environment". A label is a legally binding document that mandates how the pesticide can and must be used and failure to follow the label as written when using the pesticide is a federal offence.
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.
Use fungicide only when necessary. For turf with a history of disease, preventive applications are advisable, says Waltz. If you’re experiencing hot and dry conditions, you don’t need fungicide.
In traditionally bad areas that cause severe damage to the turf a preventative fungicide application will work best. [5] Fungicides should be applied according to the instructions on the label, the application of fungicides containing thiophanate-methyl and/or chlorothalonil in weather above 90 °F have been proven ineffective against ...
The EPA has warned of the chemical's health risks in the past, but this is the first time in nearly 40 years the agency has issued an emergency order to suspend its use and comes after more than a ...
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