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topsoil: The top layer of soil, often containing organic material, from which chemical substances are washed by water into the subsoil below. Maintaining healthy topsoil is crucial for crop growth and sustainable farm practices.

Trade Union Sustainable Development Advisory Committee: A forum for consultation on environmental issues between the Government and the main TUC-affiliated trade unions in the UK. Abbr TUSDAC. Engaging with such committees can provide farmers with support and resources for sustainable practices.

trench: A long narrow hole in the ground. Proper trenching practices can improve irrigation, drainage, and planting efficiency on the farm.

theaves: Female sheep between the first and second shearing. Managing theaves can optimize wool production and improve breeding programs.

translaminar fungicide: A fungicide that is absorbed into a plant’s system through its leaves. Using translaminar fungicides can provide effective disease control and protect crop health.

thiamine: Vitamin B1, found in yeast, cereals, liver, and pork. Ensuring adequate thiamine in livestock diets can prevent deficiencies and improve overall health and performance.

timberline: US same as treeline. Understanding the timberline helps farmers in planning land use and managing forested areas.

twist: A disease of cereals and grasses which causes malformation of the leaves and stalks due to the growth of internal fungus. This may prevent the ear emerging from its sheath (Dilophospora alopecuri). Recognizing and managing twist can prevent crop losses and improve yield.

ton: A unit of measurement of weight, equal to 1016kg. Also called long ton. US a unit of measurement of weight, equal to 907kg. Also called short ton. Understanding weight measurements is crucial for accurate product sales and logistics.

tunnel drying: A method of storage drying of hay, where the bales are stacked in the form of a tunnel over a central duct through which unheated air is blown. Utilizing tunnel drying can preserve hay quality and ensure effective drying.