Zn

1
Fig.748-751 Maize (corn) plants (Zea mays) in the
juvenile stage with differently developed
symptoms of Zn deficiency in a field trial on a
chernozem soil in Romania with a pH of 6.9 after
10 years high application of 160 kg/ha P every
year. Notice the characteristic white to
yellow-white stripes on both sides of the midrib
of the leaves, the yellow to white color of the
youngest leaves (white bud) and the squatted
growth of the plants.
2
Fig. 749
3
Fig. 750
4
Fig. 751
5
Fig. 752 Maize (corn) plant (Zea mays) on a
carbonate soil (pH 8.0) with symptoms of Zn
deficiency (leaf Zn content 20 ppm leaf P
contents 0.33-0.64).
6
Fig. 753 Squatted growth of a maize (corn)
plant (Zea mays) due to Zn deficiency in a pot
trial.
7
Fig. 754-755 Maize (corn) plants (Zea mays) in
hydroculture without Zn supply. Characteristic
squatted growth of the plants and leaf chlorosis
due to Zn deficiency.
8
Fig. 755
9
Fig. 756 Dwarf bean plant (Phaseolus vulgaris
var. nanus) in hydroculture with slight to severe
symptoms of Zn deficiency in the older leaves.
10
Fig. 757 Single leaves of dwarf bean plants
(Phaseolus vulgaris var. nanus) with differently
developed symptoms of Zn deficiency above left
healthy leaf.
11
Fig. 758 Sunflower plant (Helianthus annuus) in
hydroculture with symptoms of Zn deficiency
stunted growth, chloroses and necroses in the
older leaves.
12
Fig. 759 Different stages of the Fern leaf
disease of potato (Solanum tuberosum) leaves due
to Zn deficiency in hydroculture right below
healthy leaf.
13
Fig. 760 Broad bean plants (Vicia faba) in
hydroculture left with Zn right without Zn
fertilization notice the characteristic little
leaf symptoms of Zn deficiency.
14
Fig. 761 Close-up of the shoot of a broad bean
plant (Vicia faba) in hydroculture with symptoms
of Zn deficiency left above leaf of a healthy
plant.
15
Fig. 762 Leaves of broad bean plants (Vicia
faba) left with Zn right without Zn
fertilization (left Zn contents healthy 30
ppm sick 11 ppm).
16
Fig. 763 Hop (Humulus lupulus) field with severe
symptoms of the crinkle leaf disease due to Zn
deficiency.
17
Fig. 764 Hop plants (Humulus lupulus) in
hydroculture at time of cone developing left
without Zn supply right with Zn supply.
18
Fig. 765 Hop plant (Humulus lupulus) in
hydroculture without Zn supply with moderate to
severe symptoms of Zn deficiency.
19
Fig. 766 Very severe reduced development of
secondary hop vines and little leaf of a hop
plant (Humulus lupulus) left, in comparison to a
plant sufficiently with Zn in hydroculture.
20
Fig. 767 Secondary hop vine and leaves from a
hop field with the crinkle leaf disease of the
plants.
21
Fig. 768-769 Leaves of hop plants (Humulus
lupulus) in hydroculture without Zn supply and
with differently developed symptoms of Zn
deficiency leaves partly unnaturally shaped.
22
Fig. 769
23
Fig. 770 Cones of hop plants (Humulus lupulus)
in hydroculutre top row with Zn supply bottom
row without Zn supply.
24
Fig. 771 Tomato plants (Lycopersicum esculentum)
in hydroculture, left with Zn supply right
without Zn nutrition.
25
Fig. 772-773 Irregular chlorotic mottling on the
leaves, little leaf and forward cupping of the
leaflets of tomato plants (Lycopersicum
esculentum) due to Zn deficiency.
26
Fig. 773
27
Fig. 774 Very severe symptoms of Zn deficiency
in the apical part of a tomato plant
(Lycopersicum esculentum) with fruits.
28
Fig. 775 Glasshouse cucumber plant (Cucumis
sativus) with sufficient Zn nutrition.
29
Fig. 776 Glasshouse cucumber plant (Cucumis
sativus) with squatted growth and stunted shoot,
unnatural shaped and chlorotic leaves
rosetting due to Zn deficiency.
30
Fig. 777 Older leaves of a glasshouse cucumber
(Cucumis sativus) in hydroculture with symptoms
of Zn deficiency notice dont mistake it for Mg
deficiency!
31
Fig.778 Leaves of glasshouse cucumber plants
(Cucumis sativus) top row 3 leaves of healthy
plants lower leaves from plants with Zn
deficiency notice little leaf, distorted
leaves and open leaf basis due to Zn deficiency.
32
Fig. 779 August shoots of an apple tree (Malus
domestica) of the var. Cox Orange with little
leaf and rosetting due to Zn deficiency.
33
Fig. 780 Leaves of the apple tree (Malus
domestica) from picture 779 with symptoms of Zn
deficiency (leaf Zn content 14 ppm).
34
Fig. 781 August shoots of an apple tree (Malus
domestica) of the var. James Grieve with
little leaf and rosetting due to Zn
deficiency on a carbonate soil with very high
soil P contents left normal healthy August
shoot.
35
Fig. 782 Branch of an apple tree (Malus
domestica) of the var. Alkmene with
characteristic symptoms of Zn deficiency
(available soil contents 5.1 ppm Zn and 1620
ppm P leaf contents Zn 13 ppm, P 0.31,
P/Zn 238).
36
Fig. 783 Branch of a sweet cherry tree (Prunus
avium) of the var. Büttner Knorpel with little
leaf and rosetting due to Zn deficiency (leaf
Zn content 15 ppm).
37
Fig. 784 Twigs and leaves of sweet cherry trees
(Prunus avium) of the var. Schneiders Knorpel
with symptoms of Zn deficiency center twig of a
healthy tree (Leaf Zn contents Zn deficient
leaves 16 ppm healthy leaves 24 ppm).
38
Fig. 785 Lemon tree (Citrus limonum) on a red
earth in Kenia with symptoms of Zn and Fe
deficiency.
39
Fig. 786 Younger leaf of a lemon tree (Citrus
limonum) on a loamy soil with a very high soil pH
in Iraq with symptoms of Zn deficiency.
40
Fig. 787 Twigs of red currant plants (Ribes
rubrum) with symptoms of Zn deficiency (leaf Zn
content 14 ppm) above left twig and above
right leaf of a healthy bush, sufficiently
supplied with Zn.
41
Fig. 788 Leaves of red currant plants (Ribes
rubrum) with symptoms of Zn deficiency above
left and right healthy leaves.
42
Fig.789 Vine plant (Vitis vinifera) with
symptoms of Zn deficiency.
43
Fig. 790 Leaves of a vine plant (Vitis vinifera)
of the stock var. Kober 5 BB in hydroculture
with symptoms of Zn deficiency due to a relative
Fe toxicity by a high application of Fe-EDTA
(0.3mM/l Fe).
44
Fig. 791 Zinnia elegans with stunted growth and
interveinal chloroses near the leaf tips due to
Zn deficiency.
45
Fig. 792 Corn plants (Zea mays) in a pot trial
on a heavy soil with 30 clay lt 6µm and a Zn
supply of 1000 ppm with symptoms similar to the
chlorosis of Fe deficiency due to Zn toxicity.
46
Fig. 793 Broad bean plants (Vicia faba) on the
same soil like the corn plants from picture 792
left plant with symptoms of Zn toxicity notice
the black-brown necroses in the leaves right
healthy plant.
47
Fig. 794 Flax (Linum usitatissimum),dwarf been
(Phaseolus vulgaris), broad been (Vicia faba) and
corn (Zea mays) plants in a pot trail at a Zn
supply of 1000 ppm Zn. Flax and dwarf been plants
still did not show any visible symptoms of Zn
toxicity.
48
Fig.795 Chloroses in the leaves of Cyclamen
(Cyclamen) resembling symptoms of Mn and Fe
deficiency, induced by high Zn contents of the
leaves (250 ppm).
49
Fig. 796 Leaf of a vine plant (Vitis vinifera)
of the var. Grüner Veltliner in hydroculture
with symptoms of Zn toxicity.
50
Fig. 797 Died off shoot top and younger leaves
of a vine plant (Vitis vinifera) of the stock
var. Kober 5 BB in hydroculture with symptoms
of Zn toxicity (Zn content of the nutrient
solution 0.021 mmol/l Zn).
51
Fig. 798 Youngest leaves of the vine (Vitis
vinifera) var. Grüner Veltliner of plants in
hydroculture with severe symptoms of Zn toxicity
(Zn content of the nutrient solution 0.021
mmol/l Zn).