Analytical Profile of Coleus Forskohlii | Forskolin .pptx
Â
Bab i vb 3 diagnosis penyakit abiotik (hara)
1. POTASSIUM
• DEFICIENCY SYMPTOMS: Mottles
Chlorosis, necrosis (especially at tips and
margins between veins). Older leaves
most affected. In cereals, weak stalks,
roots more susceptible to disease
• ROLE IN PLANT NUTRITIONEnzyme
activator and coenzyme functions. Protein
synthesis. Stomata function, turgor
potential
3. SULPHUR
• DEFICIENCY SYMPTOMS : General
yellowing of young leaves. Usually no
necrosis of leaves. Reduced or stunted
growth
• ROLE IN PLANT NUTRITION
Constituent of proteins, amino acids
(thiamine), coenzymes A and vitamins
(biotin). Necessary for synthesis of oils in
plants
5. CALCIUM
• DEFICIENCY SYMPTOMS: Bitter pit in
fruit. Loss of fruit firmness. Corky fruits.
Senescent breakdown of fruit. Low
storage potential of fruit. Blossom end rot
of tomatoes. Cavity spot in carrots
• ROLE IN PLANT NUTRITIONCell
division and elongation. Proper working
and permeability of cell membranes
8. MAGNESIUM
• DEFICIENCY SYMPTOMS Inter-veinal
Chlorosis. Symptoms appear first on older
leaves. Reduced crop growth
• ROLE IN PLANT NUTRITION Part of
the chlorophyll molecule. Involved in
phosphate and nitrogen metabolism
Involved in protein synthesis. Involved in
water uptake by the plant
10. MANGANESE
• DEFICIENCY SYMPTOMS: Inter-veinal
Chlorosis (marbling) of younger leaves.
Pale stiping and brown spots on cereals.
Floppy plants (cereals). Upright growth
habit and triangular leaves on sugar beet
• ROLE IN PLANT NUTRITIONActivator
of many enzyme processes. Involved in
nitrate reduction. Necessary for
photosynthesis. Protein synthesis
13. MOLYBDENUM
• DEFICIENCY SYMPTOMS Reduced
plant growth (symptoms of N deficiency)
Reduced leaf area (whiptail in
cauliflowers)
• ROLE IN PLANT NUTRITIONNecessary
for nitrogen metabolism. Necessary for
chlorophyll. Involved in iron and
phosphate metabolism
15. BORON
• DEFICIENCY SYMPTOMS Leaf
distortion and leaf texture changes. Death
of growing points. Cracking and rotting.
Poor fertilization and fruit set
• ROLE IN PLANT NUTRITIONMeristem
growth. Carbohydrate metabolism.
Synthesis of nucleic acids. Pollen
germination
17. IRON
• DEFICIENCY SYMPTOMSYellowing
(Chlorosis) of youngest leaves
• MADE WORSE BYHigh pH soils.
Calcareous soils. High levels of copper.
Poorly drained crops
• ROLE IN PLANT NUTRITIONNecessary
for the formation of chlorophyll. Necessary
for photosynthesis. Necessary for the
formation of proteins
19. ZINC
• DEFICIENCY SYMPTOMSStunted
plants. Pale stripes to the leaf mid rib
(maize). Formation of rosettes (fruit
trees)Formation of small leaves. Chlorosis
of young leaves
• ROLE IN PLANT NUTRITIONNecessary
for the correct functioning of many
enzyme systems. Necessary for the
synthesis of nucleic acids. Necessary for
auxcin (plant hormone) metabolism
21. COPPER
• DEFICIENCY SYMPTOMS: Spiralling of
leaves, especially the flag leaf of cereals.
Chlorosis of lead tips. Stunted plants.
Poorly filled ears (cereals)
• MADE WORSE BYOrganic, chalky or
sandy soils. Reclaimed health land. High
nitrogen application
• ROLE IN PLANT NUTRITIONInvolved
in may enzyme processes. Necessary for
proper photosynthesis. Involved in the
manufacture of lignin (cell walls). Involved
in grain production