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Soybean rust is a disease that affects soybeans and other legumes. It is caused by two types of fungi, Phakopsora pachyrhizi, commonly known as Asian soybean rust, and Phakopsora meibomiae, commonly known as New World soybean rust. P. meibomiae is the weaker pathogen of the two and generally does not cause widespread problems.
The disease reaches its climax when the crop begins flowering. The cycle of the pathogen continues until the crop is defoliated or until the environment becomes unfavorable to the pathogen. [8] The Asian soybean rust is a polycyclic disease: within the disease cycle, the asexual urediniospores keep infecting the same plant.
[citation needed] White pine blister rust, wheat stem rust, soybean rust, and coffee rust are examples of notoriously damaging threats to economically important crops. [3] Climate change may increase the prevalence of some rust species while causing others to decline through increased CO 2 and O 3 , changes to temperature and humidity, and ...
Bacterial diseases; Bacterial blight Pseudomonas amygdali pv. ... Rust Phakopsora pachyrhizi. Scab ... Soybean cyst nematode
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Symptoms appear as dark red to black lesions on the lower surface of the leaves. They appear as sunken lesions surrounded by a raised brown-black border on the pods, petioles and stems. Very small black fruiting bodies of the fungus are usually visible in older lesions. [3] Other symptoms include shedding of leaves, flower and pod abortion. [3]
Cronartium ribicola (White pine blister rust): the primary host are white pines, and currants the secondary. Hemileia vastatrix (Coffee rust): the primary host is coffee plant, and the alternate host is unknown. Puccinia graminis (Stem rust): the primary hosts include Kentucky bluegrass, barley, and wheat; barberry is the alternate host.
Pages in category "Soybean diseases" The following 71 pages are in this category, out of 71 total. ... Soybean mosaic virus; Soybean rust; Stemphylium botryosum;