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Mycosphaerella musicola was first reported from Java in 1902 and by 1962 was found in most banana growing regions of the world. Although it is spread over short distances by conidia and ascospores, over long distances it is the movement of infected germplasm such as diseased leaves and suckers that is likely to be responsible.
In Ayurvedic medicine, the golden shower tree is known as aragvadha, meaning "disease killer". The fruit pulp is considered a purgative , [ 14 ] [ 15 ] and self-medication or any use without medical supervision is strongly advised against in Ayurvedic texts.
Taphrina caerulescens infects about 50 different species of oak (Quercus), predominately red oak (Q. erythrobalanus) and some white oak (Q. leurobalanus).Oak leaf blister is found across the country and in varying parts of the world but is most severe in the southeast and Gulf States of the U.S. [6] It is generally accepted that a T. caerulescens strain isolated from one host cannot be used to ...
The pinnately divided soft and hairy leaves are 3–12 centimetres (1.2–4.7 in) long. [9] Its bloom period is July to October in North America. [9] Its pollen is wind-dispersed, and can be a strong allergen to people with hay fever. [4] [10] It produces 2–4 mm obconic green to brown fruit. [9] It sets seed in later summer or autumn.
Symptoms can overlap across causal agents, however differing signs and symptoms of certain pathogens can lead to the diagnosis of the type of leaf spot disease. Prolonged wet and humid conditions promote leaf spot disease and most pathogens are spread by wind, splashing rain or irrigation that carry the disease to other leaves. [2]
Most commonly Cephaleuros virescens is identified by the leaf spots it causes. Theses leaf spots are an orange-brown rust in color and usually occur entirely on the upper leaf surface, although leaf spots on the undersides of infected leaves have been reported. The spots are fuzzy in texture and approximately 2 cm (0.8 in) in diameter. [2]
Taphrina deformans is a fungus and plant pathogen, and a causal agent[s] of peach leaf curl. [1] Peach trees infected with T. deformans will experience leaf puckering and distortion, acquiring a characteristic downward and inward curl. Leaves will also undergo chlorosis, turning a pale green or yellow, and later show a red or purple tint. [2]
There are many ways to try and manage Drechslera leaf spot. The most favorable would be to find a resistant plant variety. Other ways include collecting fallen leaves in order to reduce inoculum from plant debris, as well as pruning to increase air circulation for the grasses (a reduction in moisture is unfavorable to the pathogen). [5]