2000
DOI: 10.2134/jeq2000.00472425002900010022x
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Phosphorus Research Strategies to Meet Agricultural and Environmental Challenges of the 21st Century

Abstract: The accumulation, management, and transfer of P in intensive farming systems has increased P export from agricultural watersheds and accelerated eutrophication of surface waters. Even though much research on P has been done in the last 20 years, there are still too few answers to the many questions now being asked regarding agricultural production and environmental quality. To address these concerns, four areas of research are suggested: (i) Soil P testing for environmental risk assessment-What losses are acce… Show more

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Cited by 177 publications
(102 citation statements)
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“…The climate is subtropical with an average rainfall of 1000 mm (Bahrami et al, 2010). Soil characteristics and suitability of the area for intensive crop production favor high application of inorganic P fertilizers annually, which has an important effect on the quality of surface water reservoirs (Sharpley and Tunney, 2000). Many studies has been conducted about P chemistry and fractions in other parts of Iran (Khanmirzaie et al, 2009;2006) while, such studies are rare in the north of Iran.…”
Section: -mentioning
confidence: 99%
“…The climate is subtropical with an average rainfall of 1000 mm (Bahrami et al, 2010). Soil characteristics and suitability of the area for intensive crop production favor high application of inorganic P fertilizers annually, which has an important effect on the quality of surface water reservoirs (Sharpley and Tunney, 2000). Many studies has been conducted about P chemistry and fractions in other parts of Iran (Khanmirzaie et al, 2009;2006) while, such studies are rare in the north of Iran.…”
Section: -mentioning
confidence: 99%
“…Most research examining diffuse P sources has been conducted in intensively managed agro-ecosystems, where continued inputs of P as mineral fertilizers and imported animal feed result in the accumulation in topsoil (Condron, 2004;Haygarth et al, 1998a). Imported feed is particularly important in areas of intensive livestock production where large quantities of manure are applied to land (Sharpley and Tunney, 2000). The spatial distribution of the various source inputs of P across the landscape creates a complex and dynamic mosaic of potential P sources, because the inputs vary within the dagricultural yearT (e.g.…”
Section: Sourcesmentioning
confidence: 99%
“…Agricultural P uses above plant needs, mainly in developed countries, has resulted in the accumulation of P in soils with resulting P losses to drainage and runoff waters and sediments, leading to the eutrophication of water bodies (Sharpley and Tunney, 2000;Carpenter, 2005;Kleinman et al, 2011). Therefore sustainability of P fertilisation needs the implementation of innovative technological approaches on P and crop productivity management.…”
Section: History and Evolution Of Phosphorus Fertilisationmentioning
confidence: 99%