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Walnut ( juglans regia )

Walnut ( juglans regia ). The common walnut ( Juglans regia ) belongs to the family ( Juglandaceae ) genus ( Juglans ). It is middle sized or tall. scientific classification. Kingdom : plants (Plantae) Line : angiosperm Class: dicotyledonous (Magnoliopsida )

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Walnut ( juglans regia )

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  1. Walnut(juglansregia)

  2. The common walnut (Juglans regia ) belongs to the family (Juglandaceae) genus (Juglans). • It is middle sized or tall.

  3. scientificclassification Kingdom : plants (Plantae) Line : angiosperm Class: dicotyledonous (Magnoliopsida ) Order : beech-flower (Fagales ) Family : walnut /Juglandaceae/ Genus : walnut/Juglans/

  4. existence • 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.

  5. Kinds of walnauts • 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.

  6. Japanesewalnut/Juglansailantifolia/ • „Heart” walnut/Juglansailantifolia var. cordiformis/ In Japan it is grown for its kernel. It is the hybrydation of the Japanese walnut.

  7. Pecanwalnut/Caryaillinoinensis/ • Hickory /Carya ovata/

  8. Buds • The walnut tree has three kinds of bud: • cone-shaped bud • oval sprout • like the grooved pine-cone catkin

  9. The process of budding

  10. Blooming The walnut tree blooms in April and May. Its catkin inflorescence group in one or in pair, it is cylinder-like.

  11. The leaves • 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.

  12. Foliage 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.

  13. Bark • 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

  14. Roots • The roots of the walnut tree consists of thickened, turnip shaped taproots and thin redicles. • The taproot goes down quite deep and branches out.

  15. Diseases • Gnomicleaf and fruitblotch • Itstarts an earlydefoliation, ithappensespeciallyinthesecond part of thesummerperiod. • 3-4 mm sizedbrownroundorovalblotchesappeareontheleaves. • Fruiting body appearsontheleaves. Theyappeareonthebudstoo.

  16. Bacterial diseases • Dark brown , black batches • As they rotten, they stick to the shell. • The kernel and shell turn black , they shrink and become useless.

  17. Felt gall • The pest is inthebudduringwinter. • Inspringitspreadsontheleaves. • It has 3-4 generations. • The symptonsarevisible. • Thereareswellingontheleaves, onthebacksidethereare felt, brownishblatches.

  18. 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.

  19. Health benefits 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.

  20. Utilization • In hard times the leaves were used for making cigars and tobacco.

  21. Liqueur is made from it. • Its wood is hard. It is very precious for the wood carvers and carpenters.

  22. Tattoo • InTunisiatheymake henna blackwiththebark of thewalnuttree.

  23. Made by: Valentina Farkas

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