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angelica: A plant with dark green stems, which are crystallized with sugar and used in confectionery. Growing angelica provides farmers with valuable crops for culinary and medicinal purposes.

alluvium: The silt deposited by a river or a lake. Managing alluvium deposits helps farmers maintain soil health and productivity in flood-prone areas.

aerobic: Needing oxygen for its existence or for a biochemical reaction to occur. Compare anaerobic. Farmers need to understand aerobic processes for effective composting and soil management.

allergy: A sensitivity to substances such as pollen or dust, which cause a physical reaction. Managing allergies helps farmers protect the health of their livestock and farm workers.

ACAS: Advisory, Conciliation and Arbitration Service. ACAS provides guidance that can help farmers resolve employment disputes and ensure fair labor practices.

acidosis: An unusually high proportion of acid waste products such as urea in the blood, sometimes caused by a metabolic dysfunction. Managing acidosis in livestock is essential for maintaining herd health and productivity.

angora: A breed of rabbit, bred mainly for its fur. A breed of goat, important as a source of mohair. The original color was white, but there are now grey, pale brown, and other shades. The wool is extremely fine. Raising Angora animals provides farmers with valuable fiber for textiles.

AMS: Aggregate measure of support. Understanding AMS helps farmers assess government support for their industry and plan their operations.

aftermath: Grass which grows quickly after cutting for hay, and which will provide a second cut. Managing aftermath helps farmers maximize forage production for their livestock.

ADI: Acceptable daily intake. Understanding ADI helps farmers ensure their produce meets safety standards for consumer health.