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Plan View: Drawing of a structure with the view from overhead, looking down.

Plant Quarantine Act: Originally enacted in 1912, this Act gives the Animal and Plant Health Inspection Service authority to regulate the importation and interstate movement of nursery stock and other plants that . . . View Full Definition

Plant Quarantine: A technique for insuring disease (and pest) free plants by isolating them during a period while performing tests for latent diseases. Often used when importing new cultivars.

Plant Hardiness Zones: The USDA has divided North America into 11 hardiness zones based on average annual minimum temperatures. Horticulturalists and nurseries rate plants by their hardiness: the hardiness zone ma . . . View Full Definition

Plant Regulator: A chemical that affects the physiological behavior of plants, for example through accelerating or retarding the rate of growth or maturation of produce. Typically the definition of plant reg . . . View Full Definition

Plant Variety Protection Act Of 1970: P.L. 91-577 (December 24, 1970) was enacted to provide patent-like protection for new non-hybrid seed varieties. The ultimate goal was to create an incentive for public and private research . . . View Full Definition

Plantain (Plantago ovaga): Alleviates skin infection and inflammation, also reduces pain and coughing.

Plantae: The plant kingdom; nonmobile, autotrophic, multicellular eukaryotes. Kingdom of the plants, autotrophic eukaryotes with cellulose in their cell walls and starch as a carbohydrate storage pro . . . View Full Definition

Planta Fina De Petralba: No other details as yet other than this aromatic white-wine variety has several synonym names including (in South Africa) Kanaan. Is also grown in France and Spain.

Plant-Pesticide: As proposed by the Environmental Protection Agency (November 23, 1994), plant-pesticides are all substances responsible for pest resistance in plants, as well as the genes needed for product . . . View Full Definition