The Most Common Diseases That Plaque Deciduous Trees
Article by Patrick Desnoyers
There are several parasitic diseases of deciduous trees. An elm tree is part of the deciduous tree family. One of the most common diseases that are found in an elm tree is Dutch elm disease. This is a lethal disease that was first discovered in the American elm of North Dakota. There are preventive measures that can be taken in order to prevent Dutch elm disease.
A symptom of Dutch elm disease is wilting. The wilting foliage usually dries up quickly depending on the type of climate that the deciduous tree is situated in. The foliage will turn yellow, then wilt and then turn brown after wilting. As Dutch elm disease progresses the wilting will become more severe and encompass most of the tree.
Wetwood is a bacterial infection that tends to strike the heart of a deciduous tree. The condition of wetwood can be seen when there is evidence of the discoloration of the wood and the sap. The wood and sap will appear discolored and oozing from cracks or wounds that are located in the bark.
Usually younger deciduous trees are severely injured by the bacterial infection known as wetwood. The leaves of the infected tree may begin to wilt and to turn yellow. When this occurs many of the branches of the tree will die. This symptom most often appear following or during a drought. An affected deciduous tree may eventually recover during a season of rainfall.
An external symptom of wetwood is an oozing of the sap that is also called "slime flux." The branches may have stubs or wounds or other stem injuries that are noticeable. The slime flux on the outside of the tree will soon result in the internal pressure of the wood. When the internal pressure builds there is a growth in bacteria that forces the sap out of the tree. The sap that is produced will support the growth of molds and yeasts which can give off a foul odor.
Another disease that commonly affects deciduous trees is leaf spots. Leaf spots are a fungi that causes spots on the leaves of deciduous tree. The infected leaves of the tree will show irregular spots that are small and grayish. The leaf spots will be on the upper part of the leaf surface. The leaf spots will be surrounded by a yellow halo.
As the disease is left untreated in the tree the leaves will eventually become black and the spots will become thicker. If the infection is quite severe then the leaves may fall prematurely. Leaf spot usually is heavier in the leaves that are in the shade or lower in the crown. Leaf spot can affect trees in one area but not a neighboring area.
These are some of the more common disease that can affect deciduous trees. A deciduous tree can be treated in order to prevent a disease from ever occurring. If a deciduous tree is suffering from one of these diseases then there are measures that can be taken in order to save the tree. A deciduous tree is a beautiful sight. Preventive measures can ensure the continuing beauty of the deciduous tree.
Owner of http://www.mishobonsai.com, has been practicing bonsai for over 10 years. Found a distinct interest in propagation, especially seeds. Mishobonsai.com sells tree seed and provides bonsai tree informations.
A Common Disease That Affects The Evergreen Tree
Article by Patrick Desnoyers
The evergreen tree is a beauty upon the year round landscape. The evergreen tree is a symbol of strength as the evergreen retains its color and needles even through the harsh winter months. People have fallen in love with the durability but yet simplistic grace of the evergreen tree. Unfortunately, there are several common diseases that affect the evergreen tree.
Evergreen trees can be killed or harmed by pathogens which are a disease-causing organism. The most common disease that affects the evergreen tree is caused by a type of fungi. Fungi lack the chlorophyll and therefore take nourishment from species in the evergreen family by feeding on these types of trees. Other tree diseases are caused from viruses and bacteria. An evergreen tree can become affected by a pathogen, viruses or bacteria in a number of different ways.
One disease that affects the evergreen tree is called needle cast tree disease. This is a disease that causes the evergreen tree to shed its needles. The symptoms of this type of disease will first appear on the needle. Needle cast tree disease appears as yellow spots on the needles which eventually turn red to brown. The growth of a certain species of fungi will form the spots on the evergreen's needles. When this disease is left untreated the needles fall off. Before the needles are shed tiny black fruiting bodies will form on the needle's surface.
Another type of disease that can affect the health of an evergreen tree is needle blight tree disease. There is a group of needle blight tree diseases that include Dothistroma, Diplodia and brown spot. These diseases are known to attack evergreen trees at the twig tips or the needles. The infected needle will fall from the tree due to the disease. When the needle falls from the tree this creates a denude look. If the evergreen tree is plagued by repeated cycles of infection then this can result in the loss of the tree. There are ways to prevent and to control needle blight tree disease.
A third common disease that affects the evergreen tree is canker tree disease. This is a type of disease where a canker either kills or causes blistering in the tree bark or the trunk of the diseased evergreen tree. There are dozens of known types of fungi that can cause this disease.
The last disease that can affect the evergreen tree is known as root disease. This is a wood decay disease. The fungi get in through the lower part of the tree or directly penetrate the root system of the tree. This fungus is able to travel from one tree to another on soilborne and airborne spores. If this disease is left untreated the evergreen tree will sadly rot from the roots upward.
Each of these diseases which affect an evergreen tree can be prevented or controlled. An evergreen tree is a beautiful natural resource that should be well cared for to ensure a long lifespan of the evergreen tree.
Avid full time hobby bonsai grower. Owner of http://www.mishobonsai.com, a website with ressource for Bonsai seeds and Bonsai tree care.
Some Common Diseases In Women
Article by Jim Brown
Women have typical features that are different from men so they also have typical diseases. The following is common diseases in women.
1. Hair loss
Hair loss happens in both women and men but it seems to be more common in women. There are a lot of reasons leading to hair loss in women. What are they? They may be heredity, bad living conditions, bad habits, use of a special medical treatments, abuse of chemical substances, etc. Notwithstanding any reason, hair loss is getting more and more popular in women and makes many of them worried very much.
Hair affects our appearance much especially women so it is very important to find efficient methods to get over and prevent hair loss.
2. Breast cancer
Breast cancer is said to be the most common cancer in the world in women and kills many women every year. There are many causes of this disease but it is said that stress in work also increases the risk of getting breast cancer. This statement from scientists raises a big concern among women because nowadays people are busier and busier leading to the appearance of serious stress.
3. Cervical cancer
This is a very typical disease of women. Cervical cancer is also one of the most common diseases in the world, just after breast cancer. The rate of women getting cervical cancer is increasing rapidly. The main reason of getting cervical cancer is infection with HPV. This kind of virus appears with big amount especially after the first sexual intercourse. Even after the operation to cut a part of cervix, HPV can still come back so it is necessary for patients to go to the doctor regularly after being operated.
4. Female diseases
Recently, scientists said that serious stress also leads to female diseases. One of the biggest difficulties for women in facing with these diseases is that they much easily recur. Many women catch female diseases from their husband through sexual intercourses. Therefore, in order to remove those diseases completely, not only the woman but her spouse also has to try much to find efficient treatments. Sexual intercourses should be avoided until the two persons are surely free from those diseases.
Whenever seeing a symptom of female diseases, women should come to the doctor immediately so that they can be treated soon. Do not hesitate for any reasons or the disease will be come much more serious and at that time the treatment will be much more expensive and harder.
5. Anemia
Due to having periods every month, diet and the vocation of bearing children, anemia becomes a common disease in women. One of the simplest ways to recover from anemia is eating foods with high level of iron every day. Foods that have much iron are soybeans, beef, etc. Anemia can cause many bad effects on women's body and lead to other complications like headache, vertigo, low blood pressure, physical depression, etc. As a result, women having anemia will not gain successes in study, work and other fields of life.
James Brown writes about Dr. Lark deals, Dr. Whitaker deals and Dr. David Williams deals
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