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