Arboriculture Terms

small solids suspended in air that are generated by combustion of fossil fuels. construction and demolition. industrial processes. soil tillage and erosion. and complex reactions between sunlight and gaseous pollutants. Associated with respiratory and cardiopulmonary diseases and cancer.

plant cultivar for which exclusive rights are granted to a breeder. Only the patent holder may commercially propagate or sell the cultivar. Contrast with trademarked cultivar.

paclobutrazol