Transcript Diófa (juglans regia)

 The
common walnut
(Juglans regia )
belongs to the family
(Juglandaceae) genus
(Juglans).
 It
is middle sized or
tall.
Kingdom : plants
(Plantae)
Line : angiosperm
Class: dicotyledonous
(Magnoliopsida )
Order : beech-flower
(Fagales )
Family : walnut
/Juglandaceae/
Genus : walnut
/Juglans/
The walnut tree is native in China , in Central
Asia and in Central Europe.
These days it is grown in the United Sates,
in Turkey , in China and in Italy.

At present there 9 genera with 50 species.
For example

Black walnut /Juglans nigra/
Its crop is similar to
the common walnut.
It is edible and
delicate but its
kernel is smaller, its
shell is much harder.
Because of this, it is
grown mainly for its
wood.

Japanese walnut
/Juglans ailantifolia/
In Japan it is grown for
its kernel.

„Heart” walnut
/Juglans ailantifolia
var. cordiformis/
It is the hybrydation of
the Japanese walnut.

Pecan walnut
/Carya illinoinensis/
 Hickory
/Carya ovata/
oThe walnut tree
has three kinds of
bud:
•cone-shaped bud
•oval sprout
•like the grooved
pine-cone catkin
The walnut tree
blooms in April
and May.
Its catkin
inflorescence
group in one or
in pair, it is
cylinder-like.
The
leaves of the
walnut tree in the
first phase are red
later they turn
green.
The grown
leaves are wing
like, its lenght
is 20-50 cms.
The old walnut
tree grows short
shoots, it does
not grow too
much.
It tries to fill the
avaiable space.
It can live for a
long time, its
height remains
the same.
When
it is young its
bark is smooth,
when it is older its
bark is cracked
vertically.
The bark of a young walnut tree
When it is 35 years old
When it is 66 years old
The
roots of the
walnut tree
consists of
thickened, turnip
shaped taproots
and thin redicles.
The taproot goes
down quite deep
and branches
out.
 Gnomic
leaf and fruit blotch
It starts an early defoliation, it happens especially in
the second part of the summer period.
 3-4 mm sized brown round or oval blotches appeare on
the leaves.
 Fruiting body appears on the leaves. They appeare on
the buds too.

Bacterial
Dark
diseases
brown , black
batches
As they rotten, they
stick to the shell.
The kernel and shell
turn black , they
shrink and become
useless.
Felt gall
 The pest is in the bud during winter.
 In spring it spreads on the leaves.
 It has 3-4 generations.
 The symptons are visible.
 There are swelling on the leaves, on the
backside there are felt, brownish blatches.
Wart
gall
The leaves become gnarled, 1-2
mm swellings appeare .
 There are plenty of them on a
leaf.

Sometimes it can spread onto the fruit. In this
case the crop will decrease.
Purifies blood, intensifies digestive tracks.
It is used internally in folk therapy for
gastritis and intestinal catarrh and blood
purifier.
They use it
externally for
pack, for
imflammation or
against sweating
on the foot or
hand.
In
hard times the leaves were used
for making cigars and tobacco.
 Liqueur
is made from it.
 Its wood is hard. It is very precious for the
wood carvers and carpenters.
Tattoo
In Tunisia
they make
henna black
with the
bark of the
walnut tree.