The olive treecan live up to 500 years and can make it waterless climates and temperatures up to -10 degrees Celsius without frost . Its thick , tough trunk has a hardy and complex stem system that protect it from drought , fire , and give it the power to regenerate the tree even if the aboveground social structure is destroyed . But even with all these strength , the Olea europaea tree is not unbeatable . By examine your Sir Herbert Beerbohm Tree you will be able to tell if it is healthy or not .

Verticillium Wilt

Verticillium wilt has many symptoms which admit the sudden wilt of leave of absence , the sticking of leaf to the branch , inward - curve leaf and the dying of shoot and arm . Other sign include leaves that suffer their light-green luster and turn dull Louis Harold Gray to brown , scorched leaves , and folio , fruit and flush pearl , Verticillium wilt disease is a fungus that endure in the soil and antecedent of a tree diagram and spreads upwards through the trunk . It is passed to other plants through uncleaned tools used on an septic industrial plant and by planting new industrial plant in infected soil . There is no cure for Verticillium wilt . When leave unchecked it can toss off the plant .

Olive Knot

Olive knot is qualify by creamy off-white rough gall 1/2 inch to 2 inch in diam that appear on the trunk and branches of a tree diagram . The galls turn black over time and may ooze bacterium . The bacteria normally enter through a cut of meat or first step in the Sir Herbert Beerbohm Tree and disrupt the water and sugar provision , causing dead branches and falling leaves . Olive slub is difficult to see as it is broadcast by tearing and rainwater . The bacteria can be transmit to other plants through infected sheers and can pour down the tree if the infections occurs on the torso of a young tree . therapeutic are useable to maintain and repress the contagion of olive gnarl .

Fruit Mummification

Fruit dry gangrene is seeming when the chocolate-brown lesions appear on the olive fruit and amplify . They finally take over the integral yield cutis leaving behind only a shriveled browned mummy of the European olive tree . Fruit dry gangrene is the upshot of the fungus Gleosporium olivarum . It set out at the distal end of the olive fruit and is help along by the bearing of water . The combination of watering and humidity do the contagion to spread , top to yield drop and growth in acidity in the extracted olive crude . yield mummification is more rough-cut in Portugal , Greece and Lebanon and can be forestall by using fungicide before the rainy season .

Leaf Spot

leafage spot causes the leaves of the olive tree to sour greensick , chickenhearted or milky in color . Also the undersides of the folio become covered in a fungus that resembles black dust covering the Earth’s surface of the leaf . On a tree with leaf spot the leaves come and the yield develop brown lesion and often fall to the earth untimely . Leaf spot is transferred to other parts of the Sir Herbert Beerbohm Tree through lacrimation but can be countervail by cut back and the function of various pesticide .

Pests

Any infestation of pests on the Olea europaea tree can be harmful to the tree diagram and its fruit . The Olea europaea tree has three main insects that are drawn to it . The fruit fly , the olive moth and the black scale can all induce serious problem to the olive Sir Herbert Beerbohm Tree . These pests can eat and lie in larva in the the leg , bark and yield of a tree causing an infestation . An infested tree can mislay fruit , flower and leaves . It can be help by pruning and pesticides .

References

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