Potassium

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Transcript Potassium

Importance of
Potassium
in
Banana
Role and Deficiency Symptoms of
Potassium in Banana
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Importance of
Potassium
in
Banana
Potassium is one of sixteen
essential nutrients required for
plant growth and development.
Role of
Potassium
Potassium is classified as a
macronutrient, as are nitrogen
(N) and phosphorus (P).
The chemical symbol for
potassium is "K“. It is taken
up by plants in its ionic
form - K+.
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Potassium is not regularly applied to
many crops. But, it plays equally
important role as nitrogen and
phosphorus in plants for their growth
and development.
Potassium is to a plant what
brakes are to a car.
Good brakes are a must for safe
journey to reach the destination
and so is potassium for good
growth and development of
plants, and quality crop produce.
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Importance of
Potassium
in
Banana
Role of
Potassium
Importance of
Potassium
in
Banana
Potassium increases root
growth and thus imparts
drought resistance in plants.
Role of
Potassium
Aids in photosynthesis
and increases the crop
yields.
Catalyses the action of
many enzymes.
Helps in translocation in
sugars and starches.
Increases protein content
of plant produce.
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Importance of
Potassium
in
Banana
Develops strong cells and
prevents lodging of plants.
Role of
Potassium
Maintains turgor and
reduces water loss and
wilting of plants.
Potassium is involved in
providing resistance to
insect pests, diseases,
and water stress.
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Importance of
Potassium
in
Banana
Potassium improves quality
of crop produce.
Potassium improves quality
factors such as size, shape,
color, taste, shelf life, fiber
quality and other quality
measurements.
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Role of
Potassium
Importance of
Potassium
in
Banana
In Banana, potassium increases
number of bunches.
Role of
Potassium
Increased weight of hands and
fingers.
Higher thickness and finger
length.
Higher rind size.
Enhanced circumference of fruits
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Higher rates of potassium increased
the pseudo-stem height, girth, leaf
area and sucker production.
Early flowering and maturity with
good grade bunches in Robusta
banana.
Improved fruit condition at storage
for 20 days.
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Importance of
Potassium
in
Banana
Role of
Potassium
Importance of
Potassium
in
Banana
Potassium is very mobile in soils.
So, vulnerable to leaching losses
during heavy rains and with
uncontrolled irrigation practices.
Deficiency
symptoms
Similarly Potassium is very
mobile in plants and so moves
quickly to growing areas of the
plant.
Hence, Potassium deficiency
symptoms show up on older
leaves of the plants.
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The characteristic Potassium
deficiency is yellowing of older
leaves.
Older leaves exhibit orangeyellow chlorosis with brown
patches and subsequent death
of leaf tissue.
Potassium deficiency results
in decreased total foliage and
reduced number of hands and
fingers in a bunch.
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Importance of
Potassium
in
Banana
Deficiency
symptoms
Bunches are smaller in size with
less number of fingers per hand.
Importance of
Potassium
in
Banana
Deficiency
symptoms
Fruits are often will be lacking
in the coloration.
Potassium deficiency also
affect the translocation of
sugar and starch and this
result in the poor quality of the
fruits.
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Importance of
Potassium
in
Banana
Nutrient recommendation based on soil test
for Banana
Primary
Nutrients
Nutrient
requirement
Recommendation
Nitrogen (N)
200 g/plant
625.0 kg/acre
Phosphorus (P)
60 g/plant
545.0 kg/acre
Potassium (K)
250 g/plant.
602.0 kg/acre
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Management
Importance of
Potassium
in
Banana
Nutrient recommendation based on tissue analysis
for Banana
Primary
Nutrients
At
emergence
After
2
mths
After
4
mths
Nitrogen (N)
80
80
80
96
Phosphorus (P)
40
Nil
Nil
Potassium (K)
170
170
170
(in g)
At
After
sucker
2
set
mths
After
4
mths
After
6
mths
48
48
48
40
Nil
Nil
Nil
170
170
170
Nil
To overcome potassium deficiency in a standing
crop, spraying Potassium Sulphate (1%) solution
on the leaves is recommended.
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Management