leaf spotting

Listing 11 - 20 from 139 for leaf spotting

Vegetable Crops - pt 4
... Check current clearances of fungicides effective in controlling rust. Sulfur may be used. Leaf-Spots (fungi - Cercospora sp., Aristastoma sp., Ascochyta sp., Colletotrichum sp., Stagnospora sp.): ... of prolonged moist weather and on late summer or early fall plantings. Severe leaf spotting results in defoliation with subsequent yield reductions. Practice crop rotation; avoid cultivating fields ...
plantpathology.tamu.edu

Lycaste
... be kept off the leaves, and especially out of new growths, to prevent rot or leaf spotting. HUMIDITY should be maintained at 40% to 70%. Deciduous species need less humidity when dormant ...
retirees.uwaterloo.ca

APSnet Education Center - Introductory Topics - Plant Disease Management
... one billion dollars lost in one year to American corn growers from southern corn leaf blight (caused by Cochliobolus maydis, anamorph Bipolaris maydis). Many plant diseases cause less dramatic ... , but less so against general pathogens such as many blight, canker, root rot and leaf spotting pathogens. A major problem with genetically resistant plants is that host-differentiated pathogenic races ...
www.apsnet.org

Brooklyn Botanic Garden: Fothergillas—Super Shrubs for Sun or Shade
... /2-foot-tall suckering shrub with poor fall color. I have also observed some occasional leaf spotting problems on plants in late summer. F. 'Mount Airy' A Mike Dirr selection originating at ...
www.bbg.org

Orchids, orchid growing information, orchid care and orchid pictures - Bribie Island Orchid Society
... leaf spotting; possibly a range of different fungicides would provide better control. While some fungus infections that attack orchids spread rapidly & are often fatal to the plant, the type of leaf spotting ...
www.bribieislandorchidsociety.com

Lycaste
... be kept off the leaves, and especially out of new growths, to prevent rot or leaf spotting. HUMIDITY should be maintained at 40% to 70%. Deciduous species need less humidity when dormant ...
www.btbarry.com

Histochemistry of Lignin and Suberin ...
... rachis, potato tuber, carrot root, muskmelon cotyledons, and cucumber hypocotyl. Apple leaves infected by a leaf spotting fungus (Botryosphaeria obtusa) were also examined. All tissues, except barley and apple foliage and fern ...
www.caf.wvu.edu

Black Rot and White Rot of Apples
... can occur: a fruit rot, a leaf spot known as frogeye leaf spot, and a limb canker. Infected fruit become unmarketable, severe leaf spotting can result in defoliation which weakens the tree, and limb cankers can girdle and eventually kill entire branches. II. Symptoms: Leaf ...
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AD01 - ALFALFA DISEASE MANAGEMENT
... cause premature defoliation. The most serious in our state are Lepto leaf spot, Stemphylium leaf spot, spring leaf spot and summer leaf spot. Rust occurs during late summer and fall in the ... plan future rotations. For example, diseases are more severe during wet weather. Therefore, if significant leaf spotting is observed and showers are in the forecast, a grower could anticipate rapid defoliation ...
www.ces.ncsu.edu

OD07 - ORNAMENTAL DISEASES INFORMATION NOTE NO. 7 HOLLY DISEASES AND THEIR CONTROL IN THE LANDSCAPE
... not been tested Diseases of Minor Importance Several leaf spotting fungi have been reported on hollies, but they seldom cause damage on otherwise healthy plants. Leaf spot diseases are more common on American ...
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