leaf spots fungi cercospora

Listing 1 - 10 from 30 for leaf spots fungi cercospora

Vegetable Crops - pt 3
... leaf fleck, and the one caused by B. squamosa is known as leaf blight. The disease is frequently associated with small whitish spots occurring along the entire length of the leaf. Most spots ... warm, humid conditions. PARSLEY Petroselinum crispum Leaf Spots (fungi - Cercospora sp., Septoria sp., Alternaria sp., Phylosticta sp.): Small to medium size spots develop on leaves. They are usually yellowish ...
plantpathology.tamu.edu

Vegetable Crops - pt 4
... leaf surfaces. Rust can develop rapidly, resulting in severe leaf damage and defoliation. Check current clearances of fungicides effective in controlling rust. Sulfur may be used. Leaf-Spots (fungi - Cercospora ...
plantpathology.tamu.edu

Vegetable Crops - pt 5
... control will also control anthracnose. Leaf Spots (fungi - Cercospora beticola, Heterosporium variable): These are minor diseases of spinach which may cause damage in some years. Cercospora leaf spots are white and, usually, ... control. Ridomil does not control Cercospora. Heterosporium leaf spots are larger and have a greenish black fungal growth on both sides of the leaf as the disease develops. ...
plantpathology.tamu.edu

HOLLYHOCK
... spots are yellow-to-orange and larger. Spots may coalesce and kill large portions on the leaf. Removal and destruction of infected plant material and regular applications of a fungicide will control rust. Leaf Spots (fungi - Cercospora ...
plantpathology.tamu.edu

HYDRANGEA
... Leaf Spots (fungi - Cercospora spp., Phyllosticta hydrangeae and others): Circular-to-irregular shaped spots are produced on leaves. Use foliar protectant fungicides as needed. Powdery Mildew (fungus - Erysiphe polygoni): A white, powdery substance appears on leaf surfaces. Yellow spots that later turn brown may appear on the ...
plantpathology.tamu.edu

GROUND COVERS
... tissue. Avoid overhead watering, overwatering and high temperatures, if possible. Leaf Spots (fungi - Ramularia hedericola, Macrophoma spp., Glomerella cingulata, Phyllosticta concentrica): Brown lesions ... control fungicides. Leaf Spots (fungi - Cercospora spp., Septoria sambucina and others): Avoid overhead irrigation. If spraying is necessary, apply a recommended fungicide. Leaf Blight (fungus - ...
plantpathology.tamu.edu

Shrubs I
... . Check on availability of newer varieties with mildew resistance. Leaf Spots (fungi - Cercospora spp., Phyllosticta spp.): Leaf spot fungi seldom cause severe damage. If needed, apply a recommended ... low spots or in soils that retain water. Leaf Spots (fungi - Cercospora carii, Cercospora elaeagni, Phyllosticta argyrea, Septoria argyrea): Spots may vary in size, color and shape. These fungi are ...
plantpathology.tamu.edu

Trees part 2
... Leaf Spots (fungi - Cercospora populicola, Septoria spp., Marssonina populi): Irregular to round lesions, from brown to gray in color. Spots may coalesce and cause defoliation with severe infections. The most common leaf ...
plantpathology.tamu.edu

Trees Part 4
... autumn and spraying with approved fungicides. Leaf Spots (fungi - Cercospora moricola, C. missouriensis, and Cercosporella spp.): The leaves of mulberry are spotted by these fungi in very rainy seasons. The Cercosporella fungus can cause defoliation of older trees. Valuable specimens should be sprayed with approved fungicide if leaf spots are serious ...
plantpathology.tamu.edu

Trees Part 5
... and die. Prune and burn branches with visible cankers. Leaf Spot (fungus - Mycosphaerella ceridicola with a Cercospora stage): The leaf spots are brown, circular to angular, from one-eighth to ... parts. Spray with an approved fixed copper fungicide. Leaf Spots (fungi - Cercospora sp., Gloeosporium sp.): Small to large, round to irregular spots of various colors on leaves. Leaves may wither and ...
plantpathology.tamu.edu