Railway track must be kept in good condition, including freedom from weeds as they prevent good drainage. For many years herbicides have been sprayed on the track using converted passenger rolling stock and tank wagons. One set which operated for some years was owned by Fisons and the ex LMS, GWR and BR passenger stock is illustrated in this collection, depicting 3 of the distinctive liveries carried. Two train photographs are included from an earlier period. For the water needed to spray the Atrazine herbicide the Fisons weedkiller trains used tank wagons which came from British Petroluem Oil. These were linked together by pipes so that the spraying was automatically controlled from the control and mixing coaches. They went out of use after the end of the1989 season and all were scrapped in 1990. More details of use and history in https://rcts.org.uk/carriage-conundrums/fisons-and-other-weedkilling-trains-carriages/fisons-weedkilling-train/