Fruit brown rot disease of apples imported to Mongolia
Keywords:imported apples, disease spread, fruit brown rot infection of apple
Mongolia has imported 3094.8 tones apple from China, 318 tones apple from Russia and 140.8 tones from USA for in average for 2010-2011 and regarding to imported apples, 25% brown rot disease infection, 9.8% apple scab, 1.8% mixed infection of brown rot and scab, 1,8% bacterial spotted disease infection and 10% non-infectious disease symptoms were described within study period.
The brown rot of apple fruit is occupied 37-41% in the imported apples from China, 12-19% in the imported apples from USA and 11-29% in the imported apples from Russia, hereof the imported apples from China, the main importer country for apples, has the highest indication on the fruit brown rot disease.
According to pathogen identification of apple brown rot disease, which are described as Monilinia fructicola- species that was a cause of the fruit brown rot was widely spread on imported apples. M. fructicola species’s cultural characters are described as follows: tan colourred, dry, course and ringed colony on prune extract agar medium (upper surface of plate), its colony growth 9.9-17mm. Colony shape is margin entire and sporulation was abundant. Its conidial diamensions 6.06-12.29 μm x 4.85-8.2 μm were measured.
Mongolian Journal of Agricultural Sciences Vol.11(2) 2013 pp.68-72
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