Details

Title: plant nutrition 37

Description: plants nutrition

Total Flash Cards: 11

Created: 05/06/2005 17:24:12

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Additional Plant Sciences Flashcards

Cards in this set:

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