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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 abnormally large roots are unable to properly absorb water and nutrients from the ground and the result is cabbages that are undersized, wilted, and discolored. [64] If left uncontrolled yield losses due to clubroot can be as high as 50%. [66] The only fungicide shown to be effective in treating clubroot is PCNB. [64]
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.
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. [17] Acibenzolar-S-methyl is registered in the US for use either as a seed treatment or for direct spraying on crops. Since it activates the crop's own defence ...
Turf melting out is caused by the fungal pathogen Dreschlera poae, in the family Pleosporaceae.It is a common problem on turfgrass and affects many different species. The disease infects all parts of the plant most commonly on golf course roughs, sports fields, and home lawns.
For commercial growers, the disease is primarily controlled by use of fungicide sprays. Fungicides are much more effective when applied early in the season when the inoculum load is low as cherry leaf spot is a prolific, unrelenting, tireless disease. Fungicide applications should begin at petal fall or shortly after leaves have unfolded.
As a protectant fungicide, it is active on the plant’s surface where it forms a chemical barrier between the plant and a fungus. A protectant fungicide is not absorbed into the plant and must be applied prior to infection. Ziram can either be directly sprayed on to a plant’s leaf or it can be used as a soil and seed treatment.
PCNB is used as a fungicide to suppress the growth of fungi in various crops, such as cotton, rice, and seed grains. It is also used to prevent the formation of slime in industrial waters. Residual amounts of the compound and its metabolites can be found in crops.