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DocumentReview of fungal diseases in Poplar 1999
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No results found.Intensive poplar growing began to cover its most qualifying stages in the northern temperate zone since the beginning of the twentieth century. Massive employment of Populus nigra L. and some hybrids in south-central Europe, as well as of P. deltoides Bartr. in the warm areas and P. tremuloides Michx. in the cool ones of North America respectively, was in more recent times followed by the establishment of plantations in the Far East and in Australasia, where wider use was made of hybrids of different origin. Nevertheless, unceasing progress in terms of both quantity and quality was accompanied by an exponential increase in the toll exacted by diseases. When exchanges between one region and another were few and far between, pathosystems were well defined and local. In the case of parasite fungi, for example, attacks on the part of two bark necrosis agents were the main concern: Septoria musiva Peck in America, Discosporium populeum (Sacc.) Sutton in zones with the continental climate of both Europe and America. Rusts caused by Melampsora spp. were widespread almost everywhere, but the single species were confined to clearly identifiable geographical areas. With regard to Prokaryotes, the various parasites found on Salicaceae were restricted to even more circumscribed areas. Even today, the bacterial canker agent Xanthomonas populi (Rid) Rid et Rid has not strayed from poplar districts of north-central Europe, including France north of the Loire. Agrobacterium tumefaciens (Smith et Town.) Conn only is a matter of exception, since it is found almost worldwide, presumably owing to its polyphagy; it is highly aggressive against some white poplar selections not yet employed in any great numbers. -
BookletRegional strategy for sustainable management of transboundary plant pests and diseases in the Near East and North Africa region 2020
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No results found.Plant pests and diseases threaten food security and nutrition around the world and seriously compromise food security in the in Near East and North Africa (NENA) region, with severe economic and environmental consequences. Most of these transboundary diseases are transmitted by propagative plant material and have no curative measures. The lack of harmonized certified propagation materials and relative diagnostic protocols in NENA countries increases considerably the spread of transboundary plant pest and diseases. Furthermore, the deficiency of correct control measure and applied quarantine control strategies, together with the absence of surveillance and early warning systems are the main factors causing the fast spread of those destructive agents. -
Book (stand-alone)Integrated Pest Management of major pest and diseases in Eastern Europe and Caucasus 2017
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This book promotes Integrated Pest Management, to contribute to reduced reliance on pesticides and the avoidance of adverse impacts from pesticide use on the health and safety of farming communities, consumers and the environment. Through the IPM approach, technical advice is provided to help plan methods and measures to control major pests and diseases occurring or expected to occur in the countries of Western Asia and Eastern Europe. The specific descriptions contain a short summary of the bio logy of the species, completed with information on methods and tools of monitoring and control. Preventive control methods are also discussed.
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