| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Dep. Plant and Soil Sciences, Univ. of Delaware, Newark, DE 19717-1303;
Macaulay Land Use Res. Inst., Craigiebuckler, Aberdeen, Scotland;
DLO Winand Staring Centre for Integrated Land, Soil, and Water Research (SC-DLO), Wageningen, the Netherlands;
Soils and Crops Res. Center, Agric. and Agri-Food Canada, Sainte-Foy, QC.
* Corresponding author (jtsims{at}udel.edu).
ABSTRACT
Soil testing has been an accepted agricultural management practice for decades. Interpretations and fertility recommendations based on soil analyses and the information obtained with soil samples on cropping systems, tillage practices, soil types, manure use, and other parameters have contributed to the increased efficiency of agricultural production. Recently, however, analyses of long-term trends in soil test P values have shown that soil P in many areas of the world is now excessive, relative to crop P requirements. The role of P in the eutrophication of surface waters and emerging concerns about the human health impacts of toxic algal/dinoflagellate blooms have heightened public awareness of nonpoint source pollution by agricultural P. The greatest concerns are with animal-based agriculture, where farm and watershed-scale P surpluses and over-application of P to soils are common. The need for nutrient-management plans based on N and P is now an issue of intense debate in the U.S. and Canada. This paper addresses three issues: Should the applications of organic wastes and fertilizers be based on soil P and, if so, what is the most appropriate testing method to assess environmental risk? How can our knowledge of soil P chemistry be integrated with the expertise of hydrologists, agronomists, aquatic ecologists, and others to assess the risks that P in agricultural soils poses to surface waters? And, finally, how can we use soil P testing to evaluate new best management practices (BMPs) now being developed to reduce P transport from soil to water?
This article has been cited by other articles:
|
|
 |
|
  B. Sukkariyah, G. Evanylo, and L. Zelazny Distribution of Copper, Zinc, and Phosphorus in Coastal Plain Soils Receiving Repeated Liquid Biosolids Applications J. Environ. Qual., November 1, 2007; 36(6): 1618 - 1626. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. W. Israel, P. Kwanyuen, J. W. Burton, and D. R. Walker Response of Low Seed Phytic Acid Soybeans to Increases in External Phosphorus Supply Crop Sci., September 1, 2007; 47(5): 2036 - 2046. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. O. Maguire, D. A. Crouse, and S. C. Hodges Diet Modification to Reduce Phosphorus Surpluses: A Mass Balance Approach J. Environ. Qual., July 17, 2007; 36(5): 1235 - 1240. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 F. Zvomuya, F. J. Larney, P. R. DeMaere, and A. F. Olson Reclamation of Abandoned Natural Gas Wellsites with Organic Amendments: Effects on Soil Carbon, Nitrogen, and Phosphorus Soil Sci. Soc. Am. J., June 8, 2007; 71(4): 1186 - 1193. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. E. Hansen, D. M. Vietor, C. L. Munster, R. H. White, and T. L. Provin Runoff Water Quality from Turfgrass Established Using Volume-Based Composted Municipal Biosolids Applications J. Environ. Qual., May 25, 2007; 36(4): 1013 - 1020. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. B. Leytem, D. R. Smith, T. J. Applegate, and P. A. Thacker The Influence of Manure Phytic Acid on Phosphorus Solubility in Calcareous Soils Soil Sci. Soc. Am. J., August 3, 2006; 70(5): 1629 - 1638. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Agronomy Journal | Crop Science | |||
| Vadose Zone Journal | Journal of Plant Registrations | ||||
| Journal of Natural Resources and Life Sciences Education |
Soil Science Society of America Journal |
