Chlorothalonil is a polychlorinated aromatic mainly used as a broad spectrum, nonsystemic fungicide, with other uses as a wood protectant, pesticide, acaricide, and to control mold, mildew, bacteria, algae.
Chlorothalonil is used to control of many fungal diseases in a wide range of crops, including pome fruit, stone fruit, citrus fruit, bush and cane fruit, crancerries, strawberries, pawpaws, bananas, mangoes, coconut palms, oil palms rubber, pepper, vines, hops, vegetables, cucurbits, tobacco, coffee, tea, rice, soya beans, peanuts, potatoes, sugar beet, cotton, maize, ornamentals, mushrooms, and turf.
The dose rates recommended for crop protection have been derived from efficacy studies conducted in a variety of climatic conditions in various parts of the world. The label recommendations are designed to give satisfactory fungal disease control and to keep residues within national and international limits.
Chlorothalonil is the most important golf fungicide
- Controls major diseases such as dollar spot, anthracnose and brown patch
- Broad spectrum, protectant fungicide.
- No resistance has been detected following 40 years of use.
â-- Chlorothalonil is often tank mixed with other fungicides for broader disease spectrum and resistance management:
- DMI and benzimidazole resistant dollar spot
- QoI resistant anthracnose
- Mixtures with QoI for dollar spot control.
History of Chlorothalonil
â-- 1961 - 1st synthesized by Diamond Alkali
â-- 1963 field testing began
â-- 1966 first registered on turf
â-- 1970 first registered on crops and ornamentals
â-- 1998 acquired by Zeneca
â-- 2000 - merger with Novartis - now Syngenta
â-- Current - over 65 crops and 125 diseases
Ornamental Market
â-- Main Uses: - Chlorothalonil is utilized on a diverse number of indoor (greenhouse) and outdoor (nursery) crops.
• Greenhouse use is focused on prevention of general leafspots, rusts and botrytis listed on the label.
• Outdoor use (nursery) is focused on general leaf spot diseases, rusts and powdery mildew listed on the label. - Christmas trees, conifers, and roses are the most often treated ornamental crops.
â-- Application Methods: - Foliar applications are generally applied at or around 100 gal/acre while large plants may receive foliar applications at 200 gal/acre to achieve thorough coverage.
â-- High rate uses: - Pachysandra had an outlier rate of 2.1 lbs of Chlorothalonil per 100 gal opposed to typical labeled rate of 1.0 lb per 100 gal for normal ornamental use.
• Pachysandra will be removed from the label as a label amendment
â-- Christmas trees: (conifers) - Label amendments in progress to clarify uses do not include forest application
• Conifer uses include: conifer nursery beds, Christmas tree and bough production plantations, tree seed orchards. and landscape situations
Environmental Safety Summary
â-- Chlorothalonil is of low toxicity to non-target terrestrial organisms
â-- Consequently does not present an unacceptable risk to these organisms
â-- Although chlorothalonil has high intrinsic toxicity to some aquatic organisms, does not result in adverse effects in actual field use
â-- Due to the very rapid rate of dissipation of chlorothalonil in aquatic environments resulting in low and transient exposure
Terrestrial Risk
â-- Chlorothalonil is of low toxicity and consequently low risk to non-target terrestrial organisms, - including birds and mammals, bees and other non-target arthropods, earthworms, soil microorganisms and plants.
â-- In the terrestrial environment, chlorothalonil is rapidly degraded by microorganisms.
â-- The principle soil degradate is SDS-3701, has also been shown to be of low risk to soil organisms and birds and mammals.
â-- Chlorothalonil is not mobile in soil and does not leach to groundwater.
â-- The degradate SDS-3701 is more mobile than the parent, but the potential for leaching to groundwater is low.
Chlorothalonil Aquatic Risk
â-- Chlorothalonil has high intrinsic toxicity to some aquatic organisms
â-- Chlorothalonil dissipates very rapidly in surface water
â-- Resulting in low and transient exposure to aquatic organisms
â-- Supported by monitoring data
â-- Results in a low risk to the aquatic environment
Chlorothalonil Summary
â-- Very important fungicide for disease control and resistance management
â-- Used on a broad range of crops
â-- Dissipates rapidly in both soil and water
â-- Low toxicity and low risk to terrestrial organisms
â-- Despite high intrinsic toxicity to some aquatic organisms, low risk due to low and transient exposure
More Information:[http://www.guidechem.com/cas-189/1897-45-6.html]
Chlorothalonil is used to control of many fungal diseases in a wide range of crops, including pome fruit, stone fruit, citrus fruit, bush and cane fruit, crancerries, strawberries, pawpaws, bananas, mangoes, coconut palms, oil palms rubber, pepper, vines, hops, vegetables, cucurbits, tobacco, coffee, tea, rice, soya beans, peanuts, potatoes, sugar beet, cotton, maize, ornamentals, mushrooms, and turf.
The dose rates recommended for crop protection have been derived from efficacy studies conducted in a variety of climatic conditions in various parts of the world. The label recommendations are designed to give satisfactory fungal disease control and to keep residues within national and international limits.
Chlorothalonil is the most important golf fungicide
- Controls major diseases such as dollar spot, anthracnose and brown patch
- Broad spectrum, protectant fungicide.
- No resistance has been detected following 40 years of use.
â-- Chlorothalonil is often tank mixed with other fungicides for broader disease spectrum and resistance management:
- DMI and benzimidazole resistant dollar spot
- QoI resistant anthracnose
- Mixtures with QoI for dollar spot control.
History of Chlorothalonil
â-- 1961 - 1st synthesized by Diamond Alkali
â-- 1963 field testing began
â-- 1966 first registered on turf
â-- 1970 first registered on crops and ornamentals
â-- 1998 acquired by Zeneca
â-- 2000 - merger with Novartis - now Syngenta
â-- Current - over 65 crops and 125 diseases
Ornamental Market
â-- Main Uses: - Chlorothalonil is utilized on a diverse number of indoor (greenhouse) and outdoor (nursery) crops.
• Greenhouse use is focused on prevention of general leafspots, rusts and botrytis listed on the label.
• Outdoor use (nursery) is focused on general leaf spot diseases, rusts and powdery mildew listed on the label. - Christmas trees, conifers, and roses are the most often treated ornamental crops.
â-- Application Methods: - Foliar applications are generally applied at or around 100 gal/acre while large plants may receive foliar applications at 200 gal/acre to achieve thorough coverage.
â-- High rate uses: - Pachysandra had an outlier rate of 2.1 lbs of Chlorothalonil per 100 gal opposed to typical labeled rate of 1.0 lb per 100 gal for normal ornamental use.
• Pachysandra will be removed from the label as a label amendment
â-- Christmas trees: (conifers) - Label amendments in progress to clarify uses do not include forest application
• Conifer uses include: conifer nursery beds, Christmas tree and bough production plantations, tree seed orchards. and landscape situations
Environmental Safety Summary
â-- Chlorothalonil is of low toxicity to non-target terrestrial organisms
â-- Consequently does not present an unacceptable risk to these organisms
â-- Although chlorothalonil has high intrinsic toxicity to some aquatic organisms, does not result in adverse effects in actual field use
â-- Due to the very rapid rate of dissipation of chlorothalonil in aquatic environments resulting in low and transient exposure
Terrestrial Risk
â-- Chlorothalonil is of low toxicity and consequently low risk to non-target terrestrial organisms, - including birds and mammals, bees and other non-target arthropods, earthworms, soil microorganisms and plants.
â-- In the terrestrial environment, chlorothalonil is rapidly degraded by microorganisms.
â-- The principle soil degradate is SDS-3701, has also been shown to be of low risk to soil organisms and birds and mammals.
â-- Chlorothalonil is not mobile in soil and does not leach to groundwater.
â-- The degradate SDS-3701 is more mobile than the parent, but the potential for leaching to groundwater is low.
Chlorothalonil Aquatic Risk
â-- Chlorothalonil has high intrinsic toxicity to some aquatic organisms
â-- Chlorothalonil dissipates very rapidly in surface water
â-- Resulting in low and transient exposure to aquatic organisms
â-- Supported by monitoring data
â-- Results in a low risk to the aquatic environment
Chlorothalonil Summary
â-- Very important fungicide for disease control and resistance management
â-- Used on a broad range of crops
â-- Dissipates rapidly in both soil and water
â-- Low toxicity and low risk to terrestrial organisms
â-- Despite high intrinsic toxicity to some aquatic organisms, low risk due to low and transient exposure
More Information:[http://www.guidechem.com/cas-189/1897-45-6.html]
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