leaf disease

Listing 11 - 20 from 258 for leaf disease

Bacterial Leaf Diseases of Foliage Plants
... leaf disease on Asplenium (Bird's Nest Fern). Translucent lesions appear around the leaf margin. Older lesions have turned brown. Bacteria were isolated from the rectangular cut in the leaf margin. Control of bacterial leaf diseases Many disease-producing ...
www3.extension.umn.edu

African Violets
... be slightly acid for best results. Sterilize soil and used pots before planting to kill disease organisms, insects, nematodes and weed seeds that may be present. If the suggested soil mixture ... are all important preventative measures. Once a flower or leaf disease is noticed, spraying with captan or mancozeb will often aid in controlling the disease. Read and follow all label directions when applying ...
edis.ifas.ufl.edu

Diseases in Sugarcane (Sugarcane Handbook)
... Handbook) Pineapple Disease of Sugarcane Pokkah Boeng Disease of Sugarcane Sugarcane Eye Spot Disease Sugarcane Leaf Scald Disease Sugarcane Mosaic Virus Disease Sugarcane Ratoon Stunting Disease Sugarcane Red Rot Disease Sugarcane Rust Disease Sugarcane Smut Disease Sugarcane Yellow Leaf Disease Return to ...
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Common Hardwood Tree Diseases - Prevention and Control
... control canker tree disease. Leaf Spot Tree Disease: Leaf disease called "leafspots" are caused by a variety of fungi and some bacteria on many trees. An especially harmful version of this disease is called anthracnose which attacks many tree species. Find out how to prevent and control leaf spot tree disease. Heart Rot Tree Disease: Heart rot disease in living ...
forestry.about.com

Clematis Forum - GardenWeb
... 10 follow-ups, last one posted on Fri, Jul 1, 05 at 11:31 New leaf disease on clematis? Posted by: Rantpuppy Zone 6B, MD on Mon, May 16, 05 at 12 ...
forums.gardenweb.com

Plant Pathology: Infection Process: Disease Development
... not favourable for pathogens such as powdery mildew and leaf rust. Properties of the aerial environment that influence disease development include moisture levels, temperature and pollution. Moisture is ... the pathogen keeps producing propagules). The disease cycle speeds up at higher temperatures, resulting in faster development of epidemics. The period of leaf wetness, combined with temperature ...
bugs.bio.usyd.edu.au

Plant Pathology: Disease Management: Cultural Management Practices
... . The irrigation water can also carry propagules and spread disease, unless it is treated before use. Similarly, overhead watering can prolong leaf wetness, increasing the likelihood of germination and infection ... wash spores away without causing long periods of leaf wetness. Trickle or drip irrigation is generally the least likely to encourage disease, since water is delivered directly to root zones ...
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Making a Tree Leaf Collection
... leaf in autumn. I have seen many beautiful fall color collections. Collecting the Leaves When selecting leaves for your collection, avoid leaves damaged by insects, disease or the environment. Try to select leaves of about the same size and shape as a majority of the leaves on the tree. Make sure that the complete leaf ...
forestry.about.com

Your Favorite Potato Leaf Variety : - Growing Tomatoes Forum - GardenWeb
... regular leaf small red fruit, large pink regular leaf, and large red heart shaped regualr leaf. The heart shaped regular leaf gave a few potato leaf plants ... Sandhill. One of three plants was much more vigorous and disease resistant than the other two. I saved seed from it ... of this world tomato in regards to flavor, production, and foliar disease tolerance ... I will also meantion seed gave me an RL ...
forums.gardenweb.com

Help! What is this? virus, pest, disease? - Orchids Forum - GardenWeb
... . They just turn yellow. Kevin RE: Help! What is this? virus, pest, disease? clip this post email this post what is this? see most clipped ... with that discolouration dropped off. RE: Help! What is this? virus, pest, disease? clip this post email this post what is this? see most clipped ... top of the arch of the leaves and not down at the leaf tip. It does look as if the leaves were against cold glass ...
forums2.gardenweb.com

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