Agriculture
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- Oberhasli goatBreed of goat
- Occlusion (dentistry)Occlusion, in a dental context, means simply the contact between teeth. More technically,
- Oct-4Oct-4 (octamer-binding transcription factor 4), also known as POU5F1 (POU domain, class 5,
- Offshore aquacultureFish farms in waters some distance away from the coast
- OldTown White CoffeeMalaysian restaurant chain
- OlericultureStudy of cultivation of vegetables
- Olive oilLiquid fat made from olives
- Olive oil extractionProcess of extracting oil from olives
- Olive pomace oilType of olive oil
- Olive quick decline syndromeDisease of olive trees
- Open pollinationPollination by natural agents, or true-breeding in plant varieties
- Open-field systemPrevalent ownership and land use structure in medieval agriculture
- OrangeryCovered winter garden
- OrchardIntentionally planted trees or shrubs that are maintained for food production
- Organ printingMethod of creating artificial organs
- Organic certificationCertification for producers of organic food
- Organic Consumers AssociationAdvocacy group
- Organic farmingType of agriculture that emphasizes natural and environmentally friendly techniques
- Organic farming and biodiversityThe effect of organic farming has been a subject of interest for researchers. Theory sugge
- Organic farming by continentOrganic farming is practiced around the globe, but the markets for sale are strongest in N
- Organic fertilizerFertilizer developed from natural processes
- Organic foodFood complying with organic farming standards
- Organic hydroponicsOrganic hydroponics is a hydroponics culture system based on organic agriculture concepts
- Organic livestock farmingForm of food production
- Organic movementActivities in promotion of organic food
- Origins of agriculture in West AsiaAgriculture in West Asia can be traced back to the early Neolithic in the Near East, betwe
- Orthopedic castMedical aid for the treatment of bone fractures
- OutbuildingAn outbuilding, sometimes called an accessory building or a dependency, is a building that
- OvergrazingWhen plants are grazed for extended periods without sufficient recovery time
- OverjetIn dentistry, overjet is the extent of horizontal (anterior-posterior) overlap of the maxi
- OxCommon bovine draft and riding animal
- Oxalis corniculataOxalis corniculata, the creeping woodsorrel, procumbent yellow sorrel or sleeping beauty,
- Oyster farmingCommercial growing of oysters