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Details Title: plant nutrition 37 Description: plants nutrition Total Flash Cards: 11 Created: 05/06/2005 17:24:12	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term macronutrients Definition elements required by plants in relatively large amounts Term micronutrients Definition elements plants need in relatively small amounts Term topsoil Definition mixture of partricles derived from rock, living organisms, humus most fertile soil Term loams Definition most fertile soil Term humus Definition decomposing organinc material formed by bacteria and fungi Term cation exchange Definition positively charged minerals are made available to the plant when hydrogen ions in the soil displace the mineral ions form the clay particles. Term nitroogenase Definition catalyzes nitrogen fixation which reduces N2 to NH3 by adding electrons and hydrogen ions Term nodules Definition swellings on roots that contain nitrogen fixing bacteria Term mychorrizae Definition modified roots w/ symbiotic associations of fungi and roots Term differnt macronutrients plants need Definition carbon oxygen hydreogen nitrogen sulfur phosphrous potassium calcium magnesium Term different micronutrients plants need Definition chlorine iron boron manganese zinc copper molybdenum nickel