Esteron T 
A product name for a selective herbicide, containing 2,4-D (452g/ltr) and Florasulam (6.25g/ltr) as the active ingredients, being applied at a rate of 1.2 litres of concentrate per hectare. It can only be applied once per year. It is supplied by Dow Agrosciences Ltd.
Ethofumesate
A herbicide which was previously used to help control annual meadow grass in turf, although it is no longer approved for this use.
Ferromex
A product name for a mosskiller, containing 16.0% Iron Sulphate (381g/ltr) and 4.6% Ureic Nitrogen. The maximum application rate is 150 ml per 10m², with up to 3 applications per year permitted and the latest time for application being early autumn. It is supplied by OMEX Agriculture Ltd.
Ferrous Sulphate
A herbicide product that was formally approved for the control of moss in turf, giving good control. However, the product is no longer approved as a pesticide, so it is not lawful to claim that it controls moss. The product can be claimed to darken and blacken moss, and this in turn can help to reduce its ability to reproduce. The chemical composition is the same as historical ferrous sulphate, so anyone wishing to investigate its effect on plant growth and a grass sward can readily find out this information. See Iron Sulphate for most comments.
Finalsan
A product name for a non-selective herbicide, algicide and mosskiller containing Pelargonic acid (186.7g/ltr) as the active ingredient, being applied at a rate of 17ml of product per m². The maximum number of treatments per year is either 1 (on managed amenity turf), 4 or 8 depending on the situation. “FINALSAN destroys all green plant parts. …[and] … does not possess a long-term effect, i.e. re-emergence of affected weeds may occur. Therefore, repeated applications in 2 to 4 week intervals are necessary during the course of one vegetation period.†(Finalsan MAPP 13102 Product Lab
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Flatline
A product name for a selective herbicide, containing florasulam and fluroxypyr as the active ingredients, being applied a rate of 2 litres of concentrate mixed with a minimum of 200 litres of water per hectare. It is supplied by Nufarm UK Ltd.
Florasulam
A selective herbicide, which when mixed with another pesticide (e.g. 2,4-D, Fluroxypyr, Cropyralid with Fluroxypyr) is approved for use in turf, but not on its own.
Fludioxonil
An active ingredient of a contact fungicide, being in the chemical group phenylpyrrole.
Fluroxypyr
Gallup Hi-Aktiv
A product name for a non-selective herbicide, containing Glyphosate as the active ingredient, being applied to hard surfaces at a rate of 2.9-4.4 litres of concentrate, depending on type of weeds present, in 80-250 litres of water per hectare.