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List of Chemicals of Concern: List of Chemicals of Concern is a list of chemicals believed to be produced or used in the UK in substantial amounts and which meet specific criteria for concern relating to risks to the environment and human health. The list is drawn up by the UK Chemicals Stakeholder Forum and is intended for discussion and input. Being aware of chemicals of concern can help farmers adopt safe and sustainable farming practices.

Light Grains: Light grains are cereals such as barley and oats. Comparing light grains with heavy grains can help farmers choose appropriate crops for their land and market needs.

Liver Fluke: Liver fluke is a parasitic trematode which lives in the liver and bile ducts of animals, e.g., Fasciola hepatica which infests sheep and cattle, causing loss of condition. Managing liver fluke through proper treatment and prevention measures can protect livestock health and farm productivity.

Lignify: To lignify means to become hard and woody. Plants are less digestible as they become lignified. Managing lignification in forage crops can improve livestock nutrition and digestibility.

Lactate: To lactate means to produce milk as food for young. Understanding lactation is essential for managing dairy herds effectively, ensuring optimal milk production and the health of both mother and offspring.

Lambing: Lambing is the action of giving birth to lambs. Efficient lambing practices improve the health and survival of lambs, contributing to the overall productivity of the farm.

Lignify: To lignify means to become hard and woody. Plants are less digestible as they become lignified. Managing lignification in forage crops can improve livestock nutrition and digestibility.

Laminitis: Laminitis is the inflammation of the lamina in a hoof, causing swelling, and often leading to deformed hooves. It is possibly caused by too much grain feed. Managing laminitis through proper diet and hoof care can prevent lameness in livestock, ensuring their health and productivity.

Loose-Box: A loose-box is a stable for animals that are kept untied. A loose-box should have a hay rack, manger, water bowl, and tying rings. It should also have a grooved floor to make cleaning and drainage easier. Loose-boxes are also useful for housing sick animals. Using loose-boxes can enhance animal welfare and management.

Leader: A leader is an animal which goes first, leading the flock or herd. Understanding animal behavior and leadership dynamics can improve herd management.