This document discusses physiological disorders in peaches caused by deficiencies of various nutrients, including phosphorus, calcium, magnesium, boron, and iron. It describes the symptoms of each deficiency and provides recommendations for correction measures, such as foliar sprays or soil applications of fertilizers containing the deficient nutrient. The core information is that nutrient deficiencies in peaches can be identified by specific leaf symptoms and corrected through targeted fertilizer applications.

2. Peach Physiological Disorders
A
Lecture To ToT trainees ( FFS)
By
Mr. Allah DadKhan
Provincial Coordinator IPM KPK
MINFAL Pakistan

3. PhosphorusDeficiency
Symptoms
 Symptoms appear on
older leaves. The
leaves are small and
narrow with purplish
or bronze
discolouration.
Leaves develop
necrotic areas and fall
off.
 Correction
MeasureFoliar spray
of DAP 2% at 15 days

4. CalciumDeficiency
Symptoms
 Young emerging
leaves show chlorosis
become pale green
and curl
down. Leaves later
turn to greenish pink
or red colour. The
terminal shoot poorly
developed.
 Correction
MeasureApplication
of CaSO4 @ 2kg /

5. MagnesiumDeficiency
Symptoms
 Yellowish blotch near
the base of leaf,
midrib and the outer
edge. The leaves
become entirely
yellow and defoliate.
 Correction
Measure0.5%
MgSO4 foliar spray at
fortnightly interval or
soil application of 250
g MgSO4 / tree.

6. BoronDeficiency
Symptoms
 Premature wilting,
water soaked spots
on leaves. Premature
shedding of leaves,
bushing appearance
curling of leaves,
splitting and curling of
veins. Fruits abnormal
shape and small.
 Correction
MeasureFoliar spray
of borax@0.5%

7. IronDeficiency
Symptoms
 Thin leaves with
interveinal chlorosis in
young leaves. Greein
tinge at the base of mid
rib. Leaf size reduced.
Later the leaves
become pale or whitish
and shed. Die back
symptom older leaves
remain green, fruits
hand, coarse light
coloured.
 Correction