The most important diseases of walnut
2018
Davidović, Andrej
The fruit of a walnut plant is considered as one of the oldest nutritious foods and has a positive effect on human health. Despite favorable conditions and a high level of adaptation, in our country, walnut is insufficiently present in orchards and is mostly found in gardens in close proximity of houses and roads as a single tree. Phytopathogenic fungi and bacteria are significant problem in the production of this plant species. Phytopathogenic microorganisms which attack walnut plants are: phytopathogenic fungi Ophiognomonia leptostyla, Nectria cinnabarina, Geosmithia morbida, Microstroma juglandis, bacteria Xanthomonas arboricola pv. juglandis, Brenneria nigrifluens, Erwinia rubrifaciens and the Cherry leaf roll virus, CLRV-WB. Planting resistant varieties, using healthy planting material, removing infected leaves and fruits from the surface of the ground as infectious material, pruning trees with disinfected tools, balanced nutrition, preventive and curative treatment with plant protection tools are the basic control measures for these phytopathogenic diseases. This paper describes the economic significance and prevalence, symptoms, epidemiology and measures of the suppression of these pathogens.
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