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Potassium Cycle

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by

Miia Natka

on 3 March 2015

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Transcript of Potassium Cycle

Potassium
Where can we find K?
Factors affecting K availability to a plant
Potassium
K
Sources
"Potassium." Potassium. Web. 1 Mar. 2015. <http://faculty.yc.edu/ycfaculty/ags105/week12/biogeochemical_cycles_information/biogeochemical_cycles4.html>.
"Potassium." Wikipedia. Wikimedia Foundation. Web. 1 Mar. 2015. <http://en.wikipedia.org/wiki/Potassium>.
"Potassium Availability and Uptake." Web. 1 Mar. 2015. <http://www.ipni.net/publication/bettercrops.nsf/0/68FBD2B2A6A305BF852579800082035B/$FILE/Better Crops 1998-3 p14.pdf>.
"Potassium Cycle." Potassium Cycle. Web. 1 Mar. 2015. <http://www.rossway.net/potassium.htm>.
"Potassium & Potassium Management." Web. 1 Mar. 2015. <http://www.soils.wisc.edu/extension/materials/K_Mgmt.pdf>.
"New Resource: Potash Video & Potassium Cycle Poster." Nutrients for Life. Web. 1 Mar. 2015. <http://blog.nutrientsforlife.org/2014/02/new-resource-potash-video-potassium-cycle-poster/>.
Human activity
Potassium cycle
Mining Potassium from underground

Making fertilizers
Potassium Cycle
Biology DP1 2015

Miia Natka
Potassium is one of the major nutritional elements in soil

Influences
osmotic relations between plant and soil
functions in respiration and photosynthesis
enzyme activation function

Potassium is important in helping plants adapt to environmental stresses

Deficient levels of potassium

low rates of many plant metabolic processes
low disease and drought tolerance
late maturity
Seventh most abundant element
Soft silvery-white alkali metal that oxidizes rapidly in air and is very reactive with water
Potassium ions are necessary for the function of all living cells
in plants
water
soil
plants
plant crops
fertilizer
Soil itself
material (clay, minerals)

Soil aeration
tillage
air is needed for root respiration for K uptake
Soil temperature
low temperature restricts plant growth and rate of K uptake

Soil moisture
moist - K uptake per unit of root increases
Plant environment
Human activity & revision
Full transcript