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Ali Reza Sholevarfard, Seyed Mohammad Reza Moosavi,
Volume 3, Issue 1 (3-2014)

Plant diseases are the most important limiting factors in agricultural production. Currently the major control method of plant diseases is based on the use of chemicals that raises serious concerns about food quality, environmental hazards and development of resistance to agrochemicals. These concerns have increased the need for other alternative disease management techniques. Macro- and micronutrients are normally applied to increase crop production and improve general plant health and quality. They can also increase the disease tolerance or resistance of plants, however there are some opposing reports. Although our knowledge on the impact of mineral nutrients on plant diseases, many other factors that control plant's response and dynamic interactions among plant, environment and pathogen is not sufficient, manipulating soil nutrients through amendment or modification is always an essential part in plant disease control as well as in sustainable agriculture. Mineral nutrients are generally the first and the most important line of defense against plant diseases which affect all parts of the disease triangle. Nutrients can satisfactory decrease diseases, or at least diminish them to a level at which additional control measures are more successful and less expensive. Here we review the most recent data regarding the influence of mineral nutrients on plant disease resistance and tolerance, plant histological or morphological structure and the virulence or capability of pathogens to survive.

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