Chlorothalonil 
An active ingredient of a contact fungicide, being in the chemical group phthalonitrile, used for the control of dollar spot, fusarium patch, red thread and other turfgrass diseases, although it is no longer approved for use.
Daconil Turf
A product name for a fungicide, which contained the active ingredient chlorothalonil. It is no longer approved for use in the UK.
Dedicate
A dual action (contact and systemic) fungicide with the active ingredients of Tebuconazole (200g/l) and Trifloxystrobin (100g/l); the maximum individual dosage is 1L/ha (mixed with 400-500 litre of water), being applied a maximum of 4 occasions per year, with a minimum period of 28-days needing to be observed between any repeat applications. It can be used to control Anthracnose; Dollar Spot; Fusarium (Microdochium) Patch; Leaf Spot; Red Thread; and Rust. It is manufactured by Bayer.
Defender
A broad spectrum fungicide containing trifloxystrobin (500g/kg (50% w/w)) for use in the control of Fusarium Patch and Red Thread. It is applied at a rate of 0.7kg (a.i.) in 400-500 litres of water per hectare. It is supplied by Rigby Taylor.
Difenoconazole
An active ingredient of a systemic fungicide, being in the chemical group DMI (Demethylation Inhibitor); an example product in which it is included is Ascernity.
Dualitas
A dual action fungicide with the active ingredients of Tebuconazole and Trifloxystrobin. It can be used to control Anthracnose; Dollar Spot; Fusarium (Microdochium) Patch; Leafspot; Red Thread; and Rust. It has an application rate of 1L/ha (a.i.) in 400-500L of water per hectare. It is rainfast in 1-hour.
Eland
A broad spectrum fungicide containing pyraclostrobin (200g/kg (20% w/w)) for use in the control of Anthracnose, Dollar Spot, Fusarium Patch and Red Thread. It is applied at a rate of 1.25kg (a.i.) in 200-600 litres of water per hectare. It is rainfast in 1-hour. It is supplied by Rigby Taylor.
Exteris Stressgard
A fungicide for use in the control of Fusarium Patch disease and Dollar Spot, being used as either a preventative or early curative control for Fusarium (only at spore germination or the first signs of fusarium development, but not at or beyond the stage where fusarium has started to spread, or where mycelial growth is observed), or a preventative or curative for Dollar Spot. It has two active ingredients: Fluopyram and Trifloxystrobin. The application rate is 10L/ha of active ingredient in 200-600L water per hectare. It is manufactured by Bayer.
Fairy Ring Destroyer
A product name for a fungicide which was previously used for the control of Fairy Rings, which contained the active ingredient triforine, but it is no longer approved for use in the UK.
Fluopyram
A fungicide active ingredient in the chemical group SDHI (succinate dehydrogenase inhibitor). It is included within Exteris Stressgard.