Abstract on Rose diseases Essays - Podosphaera, Powdery Mildew

Abstract on Rose diseases Essays - Podosphaera, Powdery Mildew abstract on Rose diseases title = abstract on Rose diseases Disease Control Multi-Purpose Fungicide Daconil 2787 Plant Disease Control This product is widely used for broad spectrum disease control on lawns, ornamentals and listed fruits and vegetables. Controls many foliar diseases such as: rust, black spot, leaf spot, blights, anthracnose and powdery mildew as listed on the label. Also controls conifer diseases and lawn diseases such as brown patch, red thread, rust and dollar spot. Can be mixed with insecticides as specified on the label to make a multi-purpose spray. WHAT IS POWDERY MILDEW? Powdery Mildew looks like white fuzzy powder that accumulates on leaves and stems predominantly in spring, and again to a lesser degree in fall. It is actually a fungus that is spread by millions of microscopic spores. It imbeds itself into tender new growth and feeds on the sap of the plant. By the time the naked eye can see the white 'powder,' it has already invaded the plant tissue and is feeding and reproducing at a rapid pace. As it spreads itself on the surface, it eventually kills the cells of the plant leaf, leaving the leaf rippled and curled. Mildew spores are everywhere in the garden - in the air, the soil, on debris and on plant surfaces - ready to sprout when the environment is just right. Warm days (50-80F) and cool nights with elevated humidity and resultant dew provide ideal conditions. Though humidity promotes fungal growth, it grows on DRY plant surfaces, unlike blackspot which requires immersion in water for about seven hours in order for infection to take place. Tender new growth needs a chance to 'harden' and develop its waxy coating that provides somewhat of a barrier to fungal growth. Therefore, the rosarian must provide protection for new spring growth on a weekly basis. CONTROLLING POWDERY MILDEW Controlling mildew doesn't have to mean spraying the planet into oblivion. It includes plant genetics, cultural practices and something as simple as WATER. GENETICS: While rose hybridizers are chastised for breeding OUT fragrance, what they are trying to accomplish is breeding IN disease resistance. For scientific reasons beyond explanation here, rose genes don't contain both features - it's one or the other. Hence, you can expect either fragrant roses with little disease resistance, or clean plants with little fragrance. Plants with glossy or waxy leaves are less susceptible to mildew, as the leaf surface is harder for spores to penetrate. Rugosas naturally possess a high degree of disease and pest resistance. Where mildew is a constant problem, the choice in plantings can help prevent the need for extensive maintenance. CULTURAL PRACTICE: Planting bushes with sufficient space between them and away from walls and fences will provide good air circulation which reduces the chances for mildew. The annual pruning event plays a major role in disease prevention. Stripping leaves from the bush at pruning time, and cleaning up debris in the garden contribute to a cleaner environment. Dormant spraying will at least wipe out last year's spores, leaving only this year's to contend with. Keeping the centers of the bush open during the growing season will aid air circulation. Avoid the use of other plant materials with high mildew susceptibility, such as euonymus and tuberous begonias. Apply a thick layer of mulch in early spring to cover spores in the soil that may have wintered over. WATER is perhaps the most misconceived element surrounding powdery mildew. Many gardeners still subscribe to the belief that you should NEVER get rose foliage wet. On the contrary, a high-pressure spray of water will remove mildew spores that haven't imbedded themselves yet, and prevent them from germinating. Higher incidence of mildew during periods of rain is caused by the moisture in the air and soil - increasing the humidity that promotes mildew - not by water on the leaves. Similarly, watering early in the day will allow the soil surface to dry out a bit before the cool night temperatures arrive, reducing humidity from moist soil. PREVENTION IS THE ONLY CURE Once powdery mildew is apparent to the eye, it can't be eradicated. It simply must be prevented. Prevention is achieved by coating the plant tissue with something that provides a barrier to prevent fungus from gaining a foothold and invading the plant tissue. Growth is so rapid in spring that the leaves unfolding THIS week won't be protected by what you sprayed LAST week. This is the reason you find application schedules of every 7-10 days on most fungicides, and

Lyda Newman Invents Vented Hair Brush

Lyda Newman Invents Vented Hair Brush African-American inventor Lyda D. Newman patented a new and improved hairbrush in 1898  while living in New York. A hairdresser by trade, Newman designed a brush that was easy to keep clean, durable, easy to make and provided ventilation during brushing by having recessed air chambers. In addition to her novel invention, she was a womens rights activist.   Hairbrush Improvement Patent Newman received patent #614,335 on Nov. 15, 1898. Her hairbrush design included several features for efficiency and hygiene. It had evenly spaced rows of bristles, with open slots to guide debris away from the hair into a recessed compartment and a back that could be opened at the touch of a button for cleaning out the compartment. Women's Rights Activist In 1915, Newman was mentioned in local newspapers for her suffrage work. She was one of the organizers of an African-American branch of the Woman Suffrage Party, which was fighting to give women the legal right to vote. Working on behalf of her fellow African-American women in New York, Newman canvassed her neighborhood to raise awareness of the cause and organized suffrage meetings in her voting district. Prominent white suffragists of the Woman Suffrage Party worked with Newmans group, hoping to bring voting rights to all of New Yorks female residents. Her Life Newman was born in Ohio around 1885. Government censuses of 1920 and 1925 confirm that Newman, then in her 30s, was living in an apartment building on Manhattans West Side and was working as a familys hairdresser. Newman lived much of her adult life in New York City. Not much else is known about her private life. Hairbrush History Newman did not invent the hairbrush, but she did revolutionize its design to resemble the brushes in use more today. The history of the first hairbrush begins with the comb. Found by archaeologists at Paleolithic dig sites around the world, combs date back to the origins of human-made tools. Carved from bone, wood, and shells, they were initially used to groom hair and keep it free of pests, such as lice. As the comb developed, however, it became a decorative hair ornament used to display wealth and power in countries including China and Egypt.   From ancient Egypt to Bourbon France, elaborate hairstyles were in vogue, which required brushes to style them. The hairstyles included ornate headdresses and wigs that were used as displays of wealth and social status. Because of their primary use as a styling tool, hairbrushes were an indulgence reserved exclusively for the wealthy. As late as the 1880s, each brush was unique and carefully handcrafted- a task that included carving or forging a handle from wood or metal as well as hand-stitching each individual bristle. Because of this detailed work, brushes were usually bought and gifted only on special occasions, such as weddings or christenings, and cherished for life. As brushes became more popular, brush makers developed a streamlined manufacturing process to keep up with demand.