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Transcript of Potassium Cycle
Where can we find K?
Factors affecting K availability to a plant
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Mining Potassium from underground
Biology DP1 2015
Potassium is one of the major nutritional elements in soil
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
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
material (clay, minerals)
air is needed for root respiration for K uptake
low temperature restricts plant growth and rate of K uptake
moist - K uptake per unit of root increases
Human activity & revision