Determining what is turning the leaves of an oleander (Nerium oleander) yellow, might enable you to save the shrub or small tree. Hardy to U.S. Department of Agriculture plant hardiness zones 9a through 11, oleander's abundant green leaves form a perfect backdrop for its showy, colorful flowers. However, when diseases, pests or improper care get the better of this poisonous, yet aesthetically pleasing evergreen, yellow leaves and the decline of the plant might be an unpleasant consequence. (See References 1)
Leaf Scorch Disease
Leaf scorch is a disease that's caused by the bacteria Xylella fastidiosa. Mainly found in California, this disease is spread from infected plants to health ones by 1/2-inch-long insects known as glassy-winged sharpshooters. When an oleander is infected, the transportation of nutrients and water from the roots to the leaves is blocked. This causes yellowing of the leaves from the tips inward, followed by drooping and eventually death. Although pruning affected plant parts can preserve the aesthetic interest of the oleander, there is no cure for this disease...
A population of Plantago lanceolata (ribwort plantain) on the path was found to have higher trampling tolerance than populations away from the path; this reflected the sharp differences in the conditions of the plant at these sites. Ribwort Plant had generally a higher tolerance to trampling than any other plants as more were found on the path, but there were less compared with other plants as distance increased from the path. These results suggest that the competition level found on the path was sufficient enough to impose a selection pressure for the evolution of tolerance in a sensitive species, but in some areas the distribution of Ribwort Plantain were the same. This provides that other conditions affect the tolerance of trampling for Ribwort Plantain.
Thank you Mr. Wiesenthal for letting me be able to read and respond to your book The Sunflower. The Sunflower has showed me how ruthless it was for Jewish people in the Holocaust. In your book Karl, an SS solider, tries to get your forgiveness for the wrong he has done to the Jewish population. For a person to ask for forgiveness means that they have realized that they have done wrong and want to repent for their mistakes. The big question in your book was “What would you do?” I would’ve done exactly what you did I wouldn’t have granted the solider my forgiveness because he didn’t deserve it.
O’Leary, J., and Knecht, G. 1986. Elevated CO2 concentration increases stomate numbers in Phaseolus vulgaris leaves. Botanical Gazette. 142: 438-441.
Burning mouth syndrome (BMS) describes a painful sensation of the tongue, lips or palate. It also may involve a general sensation of discomfort of the whole mouth.
Eggs, which are laid on the surface of the bark to allow the newly hatched larvae better access to the sapwood underneath. Once hatched, the Emerald Ash Borer feed off the inner wood of the ash tree, leaving galleries that disrupt the tree's ability to properly get water and nutrients. The galleries are the most destructive aspect of the Emerald Ash Borer and are what eventually leads to the tree's death.
When first assigned to read "The Yellow Wallpaper," a student may think of a bright, cheerful paper covered room. Little does he realize that, instead of a stereotypical yellow, the wallpaper's "color is...almost revolting; a smouldering unclean yellow" (Gilman15). It reminds the narrator of "all the yellow things [she] ever saw--not beautiful ones... but old foul, bad yellow things" (23). According to Carol Westcamp, "the author designed the wallpaper...to be yellow for a reason" ("Smouldering"). Even though "yellow is often viewed as a cheerful, joyful color...[it] can also cause unpleasant, exciting, and hostile moods due its symbolism" (Westcamp). The wallpaper takes on a distinctive odor that " 'creeps all over the house,' drenching every room in its subtle aroma of decay" (Gilbert 35). The only thing the narrator "can think of that [the smell] is like is the color of the paper! A yellow smell" (Kivo 23). The narrator feels herself being drawn closer to the brink of insanity by the maddening color and begs her husband to do something about the paper, but he simply laughs at her.
Native to eastern Asia, the Emerald Ash Borer is a small metallic green beetle that can kill an ash tree in as little as three years, spreading rapidly to neighboring ash or white fringetrees. Females can lay between 60 to 90 eggs in a lifetime. As a larva, the Emerald Ash Borer lives and feeds underneath the bark of the ash tree and emerges in the spring as
In 1942 in the summer, Hans Scholl and Alex Schmorell wrote the first four leaflets of six opposition leaflets, called the “Leaves of the White Rose.” These leaflets criticized the Nazi regime and mentioned all of their crimes, from the mass extermination of Jews, to the dictatorship and the elimination of the personal freedoms of Germany’s citizens from the mass extermination of Jews. They called the Nazi regime evil, and called for Germans to stand up and resist the oppression of their government. These leaflets also were made up of quotes from great philosophers and greatly admired writers, establishing how they were clearly aimed at the intellectual public, and particularly students and professors. Across the bottom of the leaflets was this phrase, “Please make as many copies of this leaflet as you can and distribute them.”
There is a difference between the colour yellow and when an object is yellowing. Yellowing suggests fading and decaying. Blanche says “These are love-letters, yellowing with antiquity.” (Williams 41). The letters shows the downfall of the upper class, as all that is left of Blanche’s love is these letters, which are disappearing like a vapor and a mist.
In the Yellow Wallpaper by Charlotte Perkins Gilman, there is a lot of symbolism in the story. I chose to find the meaning behind the color yellow, the wallpaper, and creeping. "The color is repellent, almost revolting; a smoldering unclean yellow, strangely faded by the slow-turning sunlight (239)."A dull yellow represents caution, sickness, and jealously. "The color is hideous enough, and unreliable enough, and infuriating enough, but the pattern is torturing (244)." The yellow represents her postpartum depression. She had gotten the depression after she had the baby and was locked in a room to treat her depression because that 's what they thought was best at that time. The yellow also represents jealously
Schumann, Gail L., and Cleora J. D'Arcy. Hungry Planet: Stories of Plant Diseases. St. Paul: American Phytopathological Society, 2012. Print.
Poison Ivy is the name given to a family of malicious remote administration Trojans first developed in 2005 and still being utilized for cyber attacks today. As a type of remote administration software, once a computer becomes infected the attacker has complete control of the computer. The most recently documented large-scale utilization of the software was during the “Nitro” attacks from July 2011 through September 2011 that targeted both chemical and defense companies for the purpose of industrial espionage (Fisher). The information security firm McAfee stated that five multinational natural gas and oil companies were successfully targeted by the Poison Ivy malware, as well as 29 other companies identified by Symantec (Finkle). These organizations lost proprietary information to the attackers, including confidential bidding plans (for the energy companies) and details on manufacturing processes and formulas (for several chemical companies).
“Living with Burn Trauma,” an online article, states that “human skin is the largest organ of the body.” It provides many functions which assist humans to survive. What happens if this vital organ is destroyed? This is a question with which thousands of Americans are challenged annually. In the United States alone, 4,000 people die in burn accidents or from complications of burn injuries (“Prevention”). One common misconception is that burn victims have all come into contact with flames. Burns result from fires, electricity, hot liquids, chemicals, and even ultraviolet rays. Seeking medical attention for a proper diagnosis is critical to ensuring quality treatment and management of burns. Burn Centers have been established to help patients adapt to life after burns, which can be a great challenge. In today’s society, hospitals and medical professionals can treat burn victims, but the best remedy for burns is prevention.
Anyone can attest to the positive effects of sunlight, but it doesn’t just help the plants grow, it is necessary to us as human beings. Its effects go far beyond just brightening your mood or giving you a beautiful day at the beach. The amount of sun we are exposed to can have profound effects. Sunlight is necessary for good mental health. It keeps our hormones balanced, affects our daily motivation, and changes our perspectives on the different aspects of life all together. Furthermore, it has a dramatic effect on us physically by keeping our immune system at its best and giving our bodies essential vitamins that we could not live without. The main point is sunlight has a direct effect on a person’s mental wellbeing, physical health, and overall quality of life
2. Cook, A. A. 1975. Diseases of Tropical and Subtropical Fruits and Nuts, Hafner Press,