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Excerpt from Dr. Wayne Wilcox’s Grape Disease Notes, 2009 suggests a possible way for controlling black rot on grapes in organic farming. Black rot is probably the “Achilles heel” for organic grape production in the East. In the only good trial that we’ve run with copper, it provided 40% disease control when applied at 2-week intervals ...
Black leaf, also known as black spot disease can be caused by different types of fungi and bacteria. Most common being Asterina, Asterinella, Diplotheca, Glomerella, Gnomonia, Schizothyrium, Placosphaeria, and Stigmea. Black leaf can affect many different plant species in a wet, damp climate. It may appear as black spots on leaves, stems, and ...
Miscellaneous diseases and disorders; Berry rot Yeasts Black measles Presumably toxins from wood-rotting fungi; see Wood rot (decay) Chlorosis: Iron deficiency Esca Presumably toxins from wood-rotting fungi; see Wood rot (decay) Fasciation: Genetic disorder Little leaf Zinc deficiency: Oxidant stipple Ozone: Rupestris speckle Physiological disorder
Phomopsis cane and leaf spot is a disease that causes symptoms in the common grapevine species, Vitis vinifera, in many regions of the world. [2] This disease is mainly caused by the fungal pathogen, Phomopsis viticola, and is known to affect many cultivars of table grapes, such as Thompson Seedless, Red Globe, and Flame Seedless. [3]
Pussy willow is a name given to many of the smaller species of the genus Salix (willows and sallows) when their furry catkins are young in early spring. These species include (among many others): Goat willow or goat sallow (Salix caprea), a small tree native to northern Europe and northwest Asia.
Black rot is a name used for various diseases of cultivated plants caused by fungi or bacteria, producing dark brown discoloration and decay in the leaves of fruit and vegetables: A disease of the apple, pear and quince caused by a fungus ( Botryosphaeria obtusa or Physalospora cydoniae )
The bacterium is known to cause 'watermark disease' in willow (Salix ssp.) trees. Watermark disease affects infected trees by occluding the xylem vessels, impeding circulation. Early signs of the disease are wilting or dried-out, dead leaves on intermittent branches throughout the tree's crown.
Pages in category "Grape diseases" The following 5 pages are in this category, out of 5 total. ... List of grape diseases; B. Black spot leaf disease; C. Coulure; M ...