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.
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
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