This disease attacks young leaves first during wet, cool weather and where plants do not dry between periods of. Obecna, uznana przez index fungorum, nazwe nadal mu w 1887 r. Full text of the leafspot diseases of alfalfa and red. Alfalfa diseases and pests, description, uses, propagation. This is caused by the fungus pseudopeziza medicaginis and occurs wherever alfalfa is grown. Fully developed lesions may reach mm figure 2 but in general do not coalesce. Medicago sativa alfalfa this plant can be weedy or invasive according to the authoritative sources noted below. The leafspot diseases of alfalfa and red clover caused by. Alfalfa has a deeply penetrating taproot and the stems of the plant branch from a woody base, growing upright and erect or along the ground. Pdf determination of the important alfalfa diseases. Reino fungi, filo ascomycota division eumycota, subdivision ascomycotina, clase discomycetes.
Timely and accurate diagnoses of these diseases are critical for disease management, alfalfa quality control and the. It is by clemson university usda cooperative extension slide series. The cultures were carried in stock until 1933, when their pathoge. Disease s are wo rst when the spring season is cold, wet, and late and whe n there are frequent showers and heavy dews. Although not much research has been done on this specific disease, it has been reported as the most common alfalfa disease and it causes the greatest yield loss in. Cultivation of alfalfa medicago sativa l article pdf available october 1997. Pseudopeziza medicaginis sinonimia otros nombres cientificos acronimos. An experiment was conducted to determine the effect of temperature,humidity,ph,light,carbon sources,nitrogen sources and inorganic salts on pathogenic biological characteristics of pseudopeziza medicaginis in alfalfa ningxia strains. Pseudopeziza medicaginis, leptosphaerulina leaf spot. Many of the common foliar diseases of alfalfa are favored by the high moisture. Ascoma morphology of pseudopeziza trifolii forma specialis. Common leaf spot on alfalfa is a disease caused by the pathogen pseudopeziza medicaginis. Luzerne kan vooral bij langjarige teelt aangetast worden door verwelkingsziekte verticillium alboatrum en bladvlekkenziekte pseudopeziza medicaginis. Identification of alfalfa leaf diseases using image.
Pseudopeziza medicaginis wikipedia, wolna encyklopedia. Presenta tacas cloroticas nas follas novas e inferiores ao teren estas mais humidade. Alfalfa diseases california alfalfa workgroup homepage. This plant may be known by one or more common names in different places, and some are listed above. This disease attacks young leaves first during wet, cool weather and where plants do not dry between. Common leaf spot cls which caused by pseudopeziza medicaginis is a serious foliar disease in alfalfa. Common leaf spot caused by pseudopeziza medicaginis, rust caused by uromyces striatus, leptosphaerulina leaf spot caused by leptosphaerulina briosiana and cercospora leaf spot caused by cercospora medicaginis are the four common types of alfalfa leaf diseases. Presenta manchas cloroticas en las hojas jovenes e inferiores al tener estas mayor humedad. Transcriptome characterization and differential expression. Using fungicides on alfalfa for dairy production in wisconsin.
The leafspot diseases of alfalfa and red clover caused by the fungi pseudopeziza medicaginis and psuedopeziza sic trifolii, respectively. Common, or pseudopeziza alfalfa leaf spot object map. Variety tolerance or resistance is the primary tool for managing many alfalfa diseases, making variety selection a very important component for successful alfalfa production. Ultrastructural characteristics of compatible pseudopeziza. Details the leafspot diseases of alfalfa and red clover. Diseases are the worst when the spring season is cold, wet, and late and when there are frequent showers and heavy dews. Alfalfa is commonly attacked by a number of leaf and stem diseases that cause a loss of vigor and reduce both the hay quality and yield. In north america, spring black stem and leaf spot, caused by phoma medicaginis, is one of the most important diseases of alfalfa medicago sativa. Determination of the important alfalfa diseases occurring in the alfalfa growing areas of the faculty of agriculture of ankara university. Presenta llurdios cloroticas nes fueyes nueves ya inferiores al tener estes mayor mugor. A4090 using fungicides on alfalfa for dairy production in wisconsin. In wisconsin, it isnt uncommon to observe common leaf spot pseudopeziza medicaginis, leptosphaerulina leaf. Pseudopeziza medicaginis, mancha foliar por phoma medicaginis var.
Pseudopeziza, dermateaceae, helotiales, leotiomycetidae, leotiomycetes, pezizomycotina, ascomycota, fungi po raz pierwszy takson ten zdiagnozowal w 1832 r. Pseudopeziza medicaginis is a plant pathogen infecting alfalfa. Class ascomycetes, order leotiales, family dermateacea, genus pseudopeziza. Pdf determination of the important alfalfa diseases occurring in. Alfalfa, medicago sativa, is an herbaceous perennial in the plant family fabaceae peas and beans which is primarily grown as a forage crop which can be grazed by animals or harvested as hay to be used as an animal feed. Forage focus usdaars august 2011 o ver 50 pathogens have been identified that cause significant damage to alfalfa and prevent it from reaching its full potential. Image 1436036 is of alfalfa leaf spot pseudopeziza medicaginis symptoms on alfalfa.
Forage yield and crude protein content of lucerne cultivars. Medicago sativa, yield, crude protein, variety trial. Ultrastructural characteristics of compatible pseudopeziza medicaginis interaction with alfalfa leaf. Caused by the fungus pseudopeziza medicaginis, this leaf. The biological characteristics of pseudopeziza medicaginis in. Symptoms of this disease include small, circular brown to black spots that develop on the leaflets figure 1. The leafspot diseases of alfalfa and red clover caused by the fungi pseudopeziza medicaginis and pseudopeziza trifolii, respectively. Luttrell department of plant pathology, university of georgia, athens, georgia 30602 abstract ascomatal initials ofpseudopeziza trifolii f. Fungi imperpecti o deuteromycetes hongos asexuales. The slightly sunken sp ots later en large and ofte n become zoned. Details the leafspot diseases of alfalfa and red clover caused by. Las manchas son redondas, pardas, del mismo tamano pero salpicando desigualmente las. Relationships between pseudopeziza medicaginis resistance and. The relationships between resistance to pseudopeziza medicaginis and ppo, pod, and sod were studied in plants of 5 varieties of alfalfa medicago sativa.
Here, we report a differential expression model of transcriptome between leaves from a clsresistant line ri vs. Dano causado por pseudopeziza medicaginis frate y davis, 200 7. Full text of the leafspot diseases of alfalfa and red clover caused by the fungi pseudopeziza medicaginis and pseudopeziza trifolii, respectively see other formats s b 741 pg j a vited states department op agriculture bulletin no. Plants within each variety with known difference in resistance to p. Su tratamiento consiste en aplicar productos fungicidas organocupricos. Phacidium medicaginis, phyllachora medicaginis, pseudopeziza medicaginis, pseudopeziza trifolii f. Ataca principalmente a plantas jovenes y hojas inferiores. Pleksgewijze verwelking en afsterving wordt vaak veroorzaakt door het stengelaaltje ditylenchus dipsaci.