EUCALYPTUS OBLIQUA
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Many places in Malaysia we can find Eucalyptus Trees. Only that we do not use it in our daily needs.
Eucalyptus was first introduced from Australia to the rest of the world by Sir Joseph Banks,botanist, on the Cook expedition in 1770. It was subsequently introduced to many parts of the world, notably California, Brazil, Ecuador, Colombia, Ethiopia, Morocco, Portugal,South Africa, Uganda, Israel, Galicia and Chile. On the order of 250 species are under cultivation in California.In Portugal and alsoSpain, eucalypts have been planted in pulpwood plantations. Eucalyptus are the basis for several industries, such as saw milling, pulp, charcoal and others. Several species have become invasive and are causing major problems for local ecosystems, mainly due to the absence of wildlife corridors and rotations management.
Eucalypts have many uses which have made them economically important trees, and have become a cash crop in poor areas such as Timbuktu, Africa and the Peruvian Andes despite concerns that the trees are invasive in some countries like South Africa Best-known are perhaps the varieties karri and yellow box. Due to their fast growth, the foremost benefit of these trees is their wood. They can be chopped off at the root and grow back again. They provide many desirable characteristics for use as ornament, timber, firewood and pulpwood. It is also used in a number of industries, from fence posts and charcoal to cellulose extraction for biofuels. Fast growth also makes eucalypts suitable as windbreaks and to reduceerosion.
Eucalypts draw a tremendous amount of water from the soil through the process of transpiration. They have been planted (or re-planted) in some places to lower the water tableand reduce soil salination. Eucalypts have also been used as a way of reducing malaria by draining the soil in Algeria, Lebanon, Sicily] elsewhere in Europe, in Caucasus (Western Georgia), and California.[ Drainage removes swamps which provide a habitat for mosquito larvae, but can also destroy ecologically productive areas. This drainage is not limited to the soil surface, because the eucalyptus roots are up to 2.5 m (8.2 ft) in length and can, depending on the location, even reach the phreatic zon
An essential oil extracted from eucalyptus leaves contains compounds that are powerful natural disinfectants and can be toxic in large quantities. Several marsupial herbivores, notablykoalas and some possums, are relatively tolerant of it. The close correlation of these oils with other more potent toxins called formylated phloroglucinol compounds (euglobals, macrocarpals and sideroxylonals)[14] allows koalas and other marsupial species to make food choices based on the smell of the leaves. For koalas, these compounds are the most important factor in leaf choice.
Eucalyptus flowers produce a great abundance of nectar, providing food for many pollinators including insects, birds, bats andpossums. Although eucalyptus trees are seemingly well-defended from herbivores by the oils and phenolic compounds, they have insect pests. These include the eucalyptus longhorn borer Phoracantha semipunctata and the aphid-like psyllids known as "bell lerps", both of which have become established as pests throughout the world wherever eucalypts are cultivated.
Eucalyptus flowers produce a great abundance of nectar, providing food for many pollinators including insects, birds, bats andpossums. Although eucalyptus trees are seemingly well-defended from herbivores by the oils and phenolic compounds, they have insect pests. These include the eucalyptus longhorn borer Phoracantha semipunctata and the aphid-like psyllids known as "bell lerps", both of which have become established as pests throughout the world wherever eucalypts are cultivated.
Fire hazard
Eucalyptus oil is highly flammable (ignited trees have been known to explode,[8][16] bushfires can travel easily through the oil-rich air of the tree crowns.[17][18] Eucalypts obtain their long-term fire survivability from their ability to regenerate from epicormic buds situated deep within their thick bark, and lignotubers,[19] or by producing serotinous fruits.
In seasonally dry climates oaks are often fire-resistant, particularly in open grasslands, as a grass fire is insufficient to ignite the scattered trees. In contrast a eucalyptus forest tends to promote fire because of the volatile and highly combustible oils produced by the leaves, as well as the production of large amounts of litter which is high in phenolics, preventing its breakdown by fungi and thus accumulates as large amounts of dry, combustible fuel.Consequently, dense eucalypt plantings may be subject to catastrophic firestorms. In fact, almost thirty years before the Oakland firestorm of 1991, a study of eucalyptus in the area warned that the litter beneath the trees builds up very rapidly and should be regularly monitored and removed. It has been estimated that 70% of the energy released through the combustion of vegetation in the Oakland fire was due to eucalyptus In a National Park Service study, it was found that the fuel load (in tons per acre) of non-native eucalyptus woods is almost three times as great as native oak woodland.
Eucalyptus essential oil has many uses, and almost as many health benefits. Used appropriately and with care, eucalyptus oil can be an excellent addition to your alternative medications. It has a wide range of actions; being useful for muscle aches and pains, rheumatoid arthritis, and poor circulation; bronchitis, colds, coughs, sinusitis, sore throats, flu, and asthma; burns, blisters, cuts, insect bites, and as an insect repellent; as well as headaches and neuralgia.Eucalyptus Oil For Insects
- Bites:To ease the itching and irritation of insect bites, mix at the rate of 10 drops of eucalyptus oil to a tablespoon of carrier oil. Apply a drop or two of this mixture to bites, massaging in a circular motion and extending a bit past the bite itself.
யூகலிப்டஸ் மிக உயரமான மரமாகும். இந்தியாவில் நீலகிரி, ஆனை மலை, பழநி மலைத்தொடர் ஆகிய இடங்களில் வளர்க்கப்படுகிறது. பழங்குடியினரால் பல காலமாகப் பயன்படுத்தப்பட்டு வரும் எண்ணெய். இது சிறந்த நுண்ணுயிர் எதிரியாகும்.
சாம்பல் நிற சதைப்பற்று கொண்ட இலைகள் மிகுந்த எண்ணெய் சுரப்பிகளைக் கொண்டவை. இலைகளும், வேர்களும் மருத்துவ குண நலன்கள் கொண்டவை.
நறுமணம் கொண்ட இலைகளிலிருந்து பெறப்படும் எண்ணெய் எளிதில் ஆவியாகக் கூடியது.
இதை அழகிற்காகவும், காற்றின் வேகத்தைத் தடுப்பதற்காக சாலை ஓர மரங்களாகவும் வளர்க்கிறார்கள். இதன் எண்ணெய்க்காகவும், ரெசினிற்காகவும், மரத்திற்காகவும் பெருமளவு பயிரிடப்படுகிறது. உலகிலுள்ள மிக உயரமான மரங்களில் இவ்வகை ஒன்று. இதன் இலைகள் விறைப்பாகவும், தோல் போலவும் பல வடிவங்களில் இருக்கும். இதன் மலர்கள் பம்பர வடிவில் சிவப்பு, வெள்ளை அல்லது மஞ்சள் நிறத்தில் கொத்துக் கொத்தாக இருக்கும்.
கப்பல் கட்ட, தரைபோட, கருவிகள் செய்ய இம்மரங்கள் பெரிதும் பயன்படுத்தப்படுகின்றன. இதன் பசை போன்ற ரெசின் வயிற்றுப் போக்கை கட்டுப்படுத்துகிற மருந்தாக உபயோகப்படுத்தப்படுகிறது. ஒப்பனைப் பொருள்கள் செய்வதிலும், சோப்புகள் தயாரிப்பிலும் உபயோகிக்கப்படுகிறது.
காயங்களில் பாக்டீரியாக்களினால் ஏற்படும் சீழ்வடிதலைக் தடுக்கும். உடலில் வெப்பமுண்டாக்குவதால் மார்பு சளி, கோழை சம்பந்தப்பட்ட நோய்களைத் தீர்க்கும்.
ப்ளேவனாய்டுகள், டேனின் மற்றும் ரெசின்கள் இருப்பதால் மாத்திரை, டிங்க்சர், வடிநீர் முதலியன தயாரிக்கப்படுகின்றன.
அழகுக்கூடும்…
Eucalyptus leaves and gumnuts form a full-frame background.
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