Table of Contents Author Guidelines Submit a Manuscript
International Journal of Agronomy
Volume 2010, Article ID 517603, 8 pages
http://dx.doi.org/10.1155/2010/517603
Review Article

Phosphorus Management and Water Quality Problems in Grazingland Ecosystems

1Range Cattle Research and Education Center, University of Florida, 3401 Experiment Station, Ona, FL 33865, USA
2Agronomy Department, University of Florida, 2185 McCarty Hall, Gainesville, FL 32611, USA

Received 11 March 2010; Revised 14 June 2010; Accepted 14 July 2010

Academic Editor: Bernd Lennartz

Copyright © 2010 Maria L. Silveira et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Phosphorus management in grazingland ecosystems represents a major challenge of agronomic and environmental importance. Because of the extensive acreage occupied by grazinglands, decisions concerning pasture fertilization and nutrient management in forage-based livestock systems are crucial to both farmers and regulatory agencies. The purpose of this paper is to provide an overview of the literature relevant to pasture P fertilization and the potential impacts on water quality. There continue to be uncertainties regarding interrelationships between pasture management and water quality issues. Despite the extensive body of literature on nutrient transport from grazinglands, limited information is available on the relationships between land use, transport potential, water management, and climatic conditions affecting nutrient losses at a watershed scale. As agriculture continues to modernize and intensify, public concerns about the impacts of plant nutrients on environmental quality will likely increase. Managing water quality protection and profitable agriculture will be a major challenge for the next generations.