General deficiency symptoms Flashcards
Give two signs of deficiency in plants when the plant lacks phosphorous
Dark green
Stunted growth
Oldest leaves becomes dark brown
How does phosphorous contribute to plants
Energy - carrying phosphate compounds, nucleic acid several co-enzymes, phospholipids
Give two signs of deficiency in plants when the plant lacks potassium
Chlorotic leaves with small spots of necrotic tissue at tips weak narrow stems
How does potassium contribute to plants
Osmosis and ionic balances
Opening and closing stomata
Give two signs of deficiency in plants when the plant lacks nitrogen
Leaves become yellow and tan before dying
How does nitrogen contribute to plants
Component of amino acids, protein and co-enzyme A
Give two signs of deficiency in plants when the plant lacks sulphur
Young leaves with light green veins
Inter-veinal areas
How does sulphur contribute to plants
Some amino acids protein and co-enzyme A
Give two signs of deficiency in plants when the plant lacks calcium
Shoot and root tip die
Young leaves at first hook then die at back tips
How does calcium contribute to plants
Component of cell walls
Membrane permeability
Give two signs of deficiency in plants when the plant lacks Iron
Inter-veinal chlorosis of young leaves
Stem short and slender
How does Iron contribute to plants
Chlorophyll synthesis component of cytochromes and nitrrogenase
Give two signs of deficiency in plants when the plant lacks magnesium
May reddened sometimes with necrotic spots
Leaf tips and margins turned upwards
How does Magnesium contribute to plants
Component of the chlorophyll molecule activator of many enzyme
