Transcript Module VI: Nutrient Deficiency Symptoms

Module VI: Nutrient Deficiency Symptoms
Lesson 2: Deficiency Symptoms of Primary Nutrients
Unit 2: Phosphorus Deficiency Symptoms
After completing this Unit, you should be able to
answer:
1. Why phosphorus deficiency symptoms are
observed only in the very early stages chili pepper
crop?
2. Under what conditions phosphorus deficiency
results in chili pepper ?
3. Describe the leaf symptoms due to phosphorus
deficiency in chili pepper ?
4. How the chili pepper plants look in phosphorus
deficient field?
Module VI: Nutrient Deficiency Symptoms
Lesson 2: Deficiency Symptoms of Primary Nutrients
Unit 2: Phosphorus Deficiency Symptoms
There will be greater demand for
phosphorus during the very early
stages of crop growth.
Hence, phosphorus deficiency
symptoms are more pronounced in
young plants.
Note stunted growth and
purple pigmentation on
leaves.
Therefore, the plants should be
examined for phosphorus deficiency
during the early stages of crop growth.
Module VI: Nutrient Deficiency Symptoms
Lesson 2: Deficiency Symptoms of Primary Nutrients
Unit 2: Phosphorus Deficiency Symptoms
Severe deficiencies of phosphorus
are usually characterized by stunted
growth of plants and dark red or
purple coloration develop on the
sheaths and blades of older leaves.
Note the stunted plant with the
purple leaves.
Module VI: Nutrient Deficiency Symptoms
Lesson 2: Deficiency Symptoms of Primary Nutrients
Unit 2: Phosphorus Deficiency Symptoms
The degree of red or purple
pigmentation varies from
cultivar to cultivar. Some
cultivars develop very little red
or purple pigmentation.
Note the thinner stems and
the purple sheaths of the
deficient plants (center and
right) compared the
healthy one (left)
Module VI: Nutrient Deficiency Symptoms
Lesson 2: Deficiency Symptoms of Primary Nutrients
Unit 2: Phosphorus Deficiency Symptoms
Some cultivars develop an
additional symptom on their young
mature leaves; a pale purple,
interveinal shed develops on one or
both sides of the mid-vein about
halfway along the leaf blade.
Note the purple interveinal
shed on the deficient leaf
(right).
Module VI: Nutrient Deficiency Symptoms
Lesson 2: Deficiency Symptoms of Primary Nutrients
Unit 2: Phosphorus Deficiency Symptoms
With this, the Unit 2 on Phosphorus Deficiency Symptoms
in this Lesson concludes.
The last Unit in this Lesson is about potassium deficiency
symptoms in chili pepper.
In Lesson 3, you will learn about deficiency symptoms of
secondary nutrients.