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| Micronutrient.
Important for phloem transport and cell elongation.
Aids production of sugars. Essential for fruit &
seed development. |
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| Growing
tips become deformed or die, also leaf discolouration. |
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| Leaf
tips yellow & die. Leaves look scorched &
fall. |
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| Secondary
macronutrient. Many functions including structural
integrity of cells & growing tips. |
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| Reduced
growth, deformation or death of growing tips. Poor
fruit development. |
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| May
cause deficiency in either magnesium or potassium.
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| From
CO2 in air, essential to build sugars. |
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| Micronutrient.
Important in fluid balance & in breaking down
water for photosynthesis. |
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| Club
roots. Wilted leaves becoming bronze, chlorotic
then dying. |
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| Salt
injury causing leaf burn. |
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| Micronutrient.
Transition metal. Important in electron transport
& reproductive growth. Aids in root metabolism
and helps in the utilization of proteins. |
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| Similar
to Iron deficiency if soil acidic. |
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| May
cause distortion of new growth. Can occur in peat
potting composts. |
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| From
H2O, essential to build sugars. |
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| Micronutrient.
Transition metal. Important for enzyme synthesis
& function. Electron transfer processes and
chlorophyll synthesis. |
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| Chlorosis.
Yellow/white interveinal areas on young upper leaves
leading to areas of leaf death. |
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| May
cause leaf bronzing with tiny brown spots. |
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| Secondary
macronutrient. This is an essential part of the
chlorophyll molecule. Vital in photosynthesis and
respiration. |
|
| Chlorosis,
leaves appearing pale green or yellow. Yellowing
between leaf veins spreading to younger leaves.
poor fruit development and low yield. |
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| Excess
rare as well tolerated. Too much will suppress Calcium
& Potassium & reduce growth. |
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|
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| Micronutrient.
Essential in photosynthesis & respiration including
enzyme systems breakdown of carbohydrates |
|
| Interveinal
Chlorosis, yellowing or mottled young upper leaves.
followed by brown spots giving a chequered red effect. |
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| Reduced
growth. Older leaves with brown spots surrounded
by a chlorotic ring. Looks like Iron deficiency.
Can occur in acid soils. |
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| Micronutrient.
Essential component of enzymes for nitrogen fixing. |
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| Interveinal
Chlorosis on older leaves which may distort. |
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| Micronutrient.
Found in seeds and fruit. Needed to help form urease
to break down urea nitrogen for plant use. Involved
in the iron uptake from the soil. |
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| Decreased
iron utilization. |
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| Chlorosis
and necrotic leaf margins. |
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|
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| Primary
macronutrient. Needed for photosynthesis, growth
& respiration. It is a constituent of DNA, RNA
& amino acids which are used to build protein
molecules. Nitrogen is inert & has to be incorporated
into the plant by nitrogen-fixing bacteria in their
root nodes. |
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| Pale
& lower leaves yellow or dying. Light green
to yellow appearance of leaves, especially older
leaves; stunted growth poor fruit development. |
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| Dark
green over vigorous foliage which is susceptible
to disease & insect attack & will not overwinter
well. Poor fruit & seeds. |
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|
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| O2,
H2O. Essential for photosynthesis of sugar molecules. |
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| Primary
macronutrient. Essential for reproduction &
photosynthesis & involved in energy transfer
& formation of oils, sugars & starches.
Helps maturation, blooming & root growth. |
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| Slow
development, poor growth, flowering and fruiting.
Leaves may appear purple. |
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| May
cause micronutrient deficiencies, especially iron
or zinc. |
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|
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| Primary
Macronutrient. Activates many enzymes, encourages
flowering & important in osmosis (fluid balance).
Second to nitrogen in absorption for most plants.
Builds disease resistance, improves fruit quality. |
|
| Older
leaves yellowing around edges & then dying.
Poor growth & vulnerable to disease. In Passiflora
few or no flowers & poor fruiting & poor
heat tolerance. |
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| May
cause deficiencies of calcium & magnesium. |
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|
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| Secondary
macronutrient. Constituent of some amino acids.
Enzyme cofactor and constituent. Improves root growth
& seed production. Electron transfer processes
and chlorophyll synthesis. Cold resistance. |
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| Yellowing
of young upper leaves spreading to whole plant.
Occurs on new growth initially. |
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| May
cause early leaf drop. |
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|
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| Micronutrient.
Enzyme cofactor, growth hormone synthesis. Transformation
of carbohydrates & sugar consumption. |
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| Interveinal
chlorosis/yellowing on young leaves, reduced leaf
size. Rosetting. |
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| May
cause iron deficiency. |
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