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Celery Diseases and their Management 441 Richard N. Diseases of Cucurbits and their Management 455 Margaret Tuttle Mc Grath 13. Apart from being a rich source of vitamins and minerals, this sector also contributes significantly in economy of the region or the nation. All were successful in there tolerance to CTV, and the sour orange was replaced as the primary rootstock where tristeza epidemics had occurred. In certain parts of the world, FV are the major dietary staple. A Predictive Program for Forecasting Fire Blight Diseases in Apples and Pears. Some of the rootstocks found tolerant to CTV are the trifoliate orange and its hybrids i.e. Also the rough lemon, Volkamer lemon, Rangpur lime and Cleopatra mandarin are tolerant to CTV. Preimmunization: Applications and Perspectivesin Virus Disease control 361 Gerd W. Looking at the load of the future food requirement, the global increased production of FV during last few years has absorbed the additional food requirement and accordingly the eating habits are also changing and shifting to- wards more consumption of these commodities worldwide. Predicting apple blossom infections by Erwinia amylovora using the MARYBLYT model. The only solution was to search for and find mild strains of CTV which might protect against the severe stem pitting strains. With an additional 1.5 billion mouth to feed by 2020, farmers worldwide have to produce 39 % more. Since the scions and even rootstocks may be severely pitted, changing to a new rootstocks has little or no effect, and this course of action could not be used to resolve this serious problem. Naqvi Kluwer Academic Publishers Diseases of Fruits and Vegetables Volume I Diseases of Fruits and Vegetables Diagnosis and Management Volume I Edited by S. Black Sigatoka and weak to moderate El Nino weather pattern could affect banana production. A second type of CTV called seedling yellows will induce a severe reaction in seedlings of lemon, grapefruit or sour orange. Isolation and partial characterization of citrus tatter leaf virus isolates from Texas.
My effort in bringing out this edited book is to update the achievements of twentieth century in diagnosis and management of diseases of fruits and vegetables of international trade and some under-exploited minor fruits which otherwise are widely dispersed in various scientific journals and to develop future strategies for the new millennium. Departamento de Entomologia, Fitopatologia e Zoologia Agricola, ESALQ/USP, 13418-900 Piracicaba, SP, BRAZIL Phone: (19) 3429-4124. Nor is this a comprehensive literature review on the selected diseases. There appeared to be a direct association between the presence of seedling yellows tristeza and decline (Roistacher, 1981a, 1981b). Hence there is an ample scope and po- tential in increasing production per unit area in developing nations and in certain devel- oped nations. Use of filtration for removal of conidia of Penicillium expansum from water in pome fruit packinghouses. It is questionable to expend funding and energy to derive protective CTV isolates for scions on the sour orange rootstock with the objective of reviving the sour orange as a rootstock?