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odour nuisance: A smell which is annoying or unpleasant. Managing odour nuisance is important for maintaining good relations with neighbors and the community. Farmers can benefit from implementing waste management practices and using odor control technologies to reduce unpleasant smells from livestock operations and manure storage.

onion: A vegetable crop grown either for cooking or for eating in salads. Onions are versatile and in high demand. Farmers can benefit from growing onions to diversify crops and increase market opportunities. Understanding best practices for onion cultivation can improve yields and quality.

organic agriculture: Organic farming. Organic agriculture focuses on sustainable practices that enhance soil health, biodiversity, and ecological balance. Farmers can benefit from organic agriculture by accessing niche markets, reducing reliance on synthetic inputs, and improving farm sustainability.

overwood: The topmost vegetation layer in a forest, same as overstorey. Managing the overwood is crucial for forest health and productivity. Farmers can benefit from understanding the ecological dynamics of overwood vegetation and applying sustainable forestry practices to maintain biodiversity and resource availability.

overgrazing: The practice of grazing a pasture so much that it loses nutrients and is no longer able to provide food for livestock. Preventing overgrazing is crucial for maintaining pasture health and productivity. Farmers can benefit from implementing rotational grazing practices to ensure sustainable forage availability and soil health.

oxidase: An enzyme which encourages oxidation by removing hydrogen. Understanding the role of oxidase in biological processes can help farmers optimize livestock health and feed efficiency. Farmers can benefit from using enzyme supplements to enhance digestion and nutrient absorption in animals.

ornamental plants: Plants grown for decorative purposes in gardens and landscape design projects. Growing ornamental plants can diversify farm income and enhance aesthetic value.

olive: A Mediterranean tree with small yellowish-green edible fruit from which an edible oil can be produced. Olive cultivation can provide farmers with a high-value crop. Understanding best practices for growing, harvesting, and processing olives can enhance profitability and product quality.

ox-eye: Any flower with a round yellow centre, such as the ox-eye daisy. Ox-eye daisies can provide aesthetic and ecological benefits to farms. Farmers can benefit from incorporating wildflowers like ox-eye daisies into their landscapes to enhance biodiversity and support pollinators.

oilseed rape: A plant of the cabbage family with bright yellow flowers, grown to provide an edible oil and animal feed from the processed seeds. Oilseed rape is a versatile crop that can improve farm income and soil health. Farmers can benefit from rotating oilseed rape with other crops to enhance yields and reduce pest pressures.