This document describes the physiological disorders and deficiencies that can occur in various types of bean plants, including broad beans, dwarf beans, haricot beans, runner beans, and their symptoms. For each type of bean and disorder, it lists the symptoms seen such as stunted growth, wilting, chlorosis or discoloration of leaves, and failure of pods or seeds to develop properly. A total of over 20 different disorders and the beans they affect are outlined.

2. Beans Physiological
Disorders
ToT to FFS Staff
By Mr. Allah Dad Khan
Provincial Coordinator IPM KPK
MINFAL

3. Symptoms
 Stems thin, leaves
erect; early
defoliation of basal
leaves
Broad Bean Plants Phosphorus deficiency

4. Symptoms
 Young growth
deformed, young
stems and petioles
wilt and growing
points die; leaflets
near growing points
fail to expand,
distorted and
hooked, and tips
die.
Broad Bean Plants Calcium deficiency

5. Symptoms
 Pods deformed,
wilted and
blackened; seeds
fail to develop.
deficiency

6. Symptoms
 Central intervenal
chlorosis, margins
green
Broad Bean Leaves Magnesium deficiency

7. Symptoms
 Internodes short;
leaves dark brown
marginal scorch
and margins curled
forward
Broad Bean Shoot Potassium deficiency

8. Symptoms
 Brown lesions in
centers of
cotyledons, similar
"Marsh Spot" in
peas
Broad Bean Seeds Manganese deficiency

9. Symptoms
 Stems somewhat
stiff; growing points
die and lateral
growths develop
from bases of
shoots; leaves slight
intervenal chlorosis
Broad Bean Plants Boron deficiency

10. Symptoms
 Growth dwarfed
and thin; leaves
pale green and
older leaves yellow
and die early
deficiency

11. Symptoms
 Growth dwarfed
and thin: leaves
dark, lustreless
green, older leaves
turn brown and
shed early
Dwarf Bean Plants Phosphorus deficiency

12.  Growth dwarfed
and thin; stems,
petioles, pedicels
and pods wilted;
early defoliation.
Dwarf Bean Plants Calcium deficiency

13. Symptoms
 Pods wilted and
deformed; seeds fail
to develop
Dwarf Bean Pods Calcium deficiency

14. Symptoms
 Older leaves
chlorotic mottling,
followed by general
yellowing and
brown necrotic
spotting.
Dwarf Bean Foliage Magnesium deficiency

15. Symptoms
Dwarf Beans Leaf Potassium deficiency

16. Symptoms
 Stems abnormally
thickened;
longitudinal
splitting of epicotyl;
death of growing
point; leaves some
chlorosis.
Dwarf Bean Plants Boron deficiency

17. Symptoms
 Leaves strong
chlorotic motting
Haricot Bean Plants Manganese deficiency

18. Symptoms
 Brown lesions in
cotyledons, similar
"Marsh Spot" of
peas
Haricot Bean Seeds Manganese deficiency

19. Symptoms
 Growth stunted and
thin; leaves pale
green and older
leaves yellow and
die early; stems and
petioles tend to be
tinted red
Runner Bean Plant Nitrogen deficiency

20. Symptoms
 Leaves pale green,
tips and margins of
leaflets chlorotic
patches and brown
spots
Runner Bean Leaves Calcium deficiency

21. Symptoms
 Leaflets slightly
pale and striking
intervenal necrosis
Runner Bean Leaf Magnesium deficiency

22. Symptoms
 Leaflets curled
backward;
intervenal chlorosis
and brown
marginal scorch;
scorched margins
curled forward.
deficiency

23. Symptoms
 Leaflets intervenal
chlorotic motting
deficiency

24. Sym[ptoms
 Brown lesions in
cotyledons, similar
to "Marsh Spot" of
peas.
Runner Bean Seeds Manganese deficiency

25. Symptoms
 Leaves intervenal
chlorosis beginning
at margins,
followed by brown
necrotic spotting
Runner Bean Plant Manganese toxicity
(soil acidity complex)

26. Symptoms
 Intervenal chlorosis
and fine necrotic
brown spotting.
(soil acidity complex

27. Symptoms
 Stem thickened and
stiff; growing points
die; leaves slight
chlorotic mottling
deficiency