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50 Cards in this Set

  • Front
  • Back
as radius descreases , the contribution of the perimter to the flux
increases
nutriends required in large amounts
macronutirants
trace or minor elements
micronutriants
most abudant gas in the atmospher
nitrogen
application of too much nitrogen causes exsessive veatagtive gorwth that has a higher rate of
respirations and sensitivity to freezing
flowerin and furting can be delayed becuase of what t
nitrogen fertilizaiton
nitrogen fixtin gorganisms are
prokarytones
legumes produce nodules in their roots to house what bacteria
rhizobia
rhizobia produces
usable nitrate
nitrogenase enyzmes are inhiibed by oxygen , so cells in nodules produce
leghaemoglobin in order to bind oxygyen so fixatino can occur
nitrgoen is avaliable in what form
inorganic ions and ammonium
organic forms of nitrogen must be waht before it is avaliable to plants
decomposed
nitrogen is released from decomposing organic mater in the procesess of
mineralizaiton
nH4+ is positivly charged and is bound to soil particles t/f
ture
most n is absorbed by plants in what form
nitrate
nitrogen can be lost by what processed
denitrification
posassium is essential for what processed
photosynthesesis , sugar translation and enzyme activation
calcium does what
holds cells togeather.
types of calcium difeicencey
bitter pit , tip burn, blossom end rot
phosphours is need in
energy storgae
suflfur is a what
fungcide
irgon
respriation and photosynthesis
more H+ makes the solution
more acididc. more hydroxls make it more basic
hydrobhydrogens are not a nutriaent but are improtant in what factor
they dissassociate ions for plant nutriants
most imporatnt abitoic envirometnal factors are
temperature solar radiation soil moisture and atmosphere
legth of a growing season is directed by
maximum and minimum temperatures
growtin season is defined by
the length in time between teh max and min tempartures
solar radation is the predominate sources of
heat
frozen plants are killed by
cellular dehydration
chilling tempartures affect what types of plants
tropical or subtropical areas
adequate what is second to temperature in limting plant prodcutivity
moisture
amountt, quality and sitribution of what is geatly influences by season location topogarathpy
rainfall
as air rises , it scools and what factor is reduced
water holding capacity
if air is cold and wet ont he way up a mountain what is it when it comes back down
warm and dry on the leeward side
what tow factores make it so it thaks a lot of energy to raise the temrparture of wahter
hight latent heat of caportiation and high specific heat
ry desertes suuffer extreames in
temepratures.
what three light properties effected plant growth
quality duration and intenisty
leaf area index is the number of eaht covering an area of soil
leaves
sensitive trees are coated with white latex pain to prevent this type of damage
souwthwest injurty
photomorphogeneis is the what
change in development of a plant borght about by light
photoroposim is the
orientation of the plant with respecct to light
composition of air
78 nitrogen 21 oxygen .3 CO2
why is it difficult to measure PAR
measuring light energy is difficulutre because it is composed of many wavelengths and energy contaion in each photo of light is proprotional to its wavelenght.
pAR stands fro
photosyntheticall Active Radiation
four effectso of light on plants
photomorphogeneis-developmental changes tiggered by light
phototropism-orientail of plant in respect to light
photosytheiss -capture of light
photperiodic-developmenta chagnes brought about by light expsoure
facots affeting photosytnhissit
light quality, duraatin, intensity, CO2 concentration, Source sink reatltionship and temprature
first chemical pesticide
bourxoux mixture
bacteria are one_____ _______ ____-
once celled prokarotic organism
fungi are _____ ____
disease organisms
virus
necoloprotein