EurekaMag
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Phosphorus fertilizer and grazing management effects on phosphorus in runoff from dairy pastures


Phosphorus fertilizer and grazing management effects on phosphorus in runoff from dairy pastures



Journal of Environmental Quality 37(2): 417-428



ISSN/ISBN: 0047-2425

PMID: 18268305

DOI: 10.2134/jeq2007.0049

Fertilizer phosphorus (P) and grazing-related factors can influence runoff P concentrations from grazed pastures. To investigate these effects, we monitored the concentrations of P in surface runoff from grazed dairy pasture plots (50 x 25 m) treated with four fertilizer P rates (0, 20, 40, and 80 kg ha(-1) yr(-1)) for 3.5 yr at Camden, New South Wales. Total P concentrations in runoff were high (0.86-11.13 mg L(-1)) even from the control plot (average 1.94 mg L(-1)). Phosphorus fertilizer significantly (P < 0.001) increased runoff P concentrations (average runoff P concentrations from the P(20), P(40), and P(80) treatments were 2.78, 3.32, and 5.57 mg L(-1), respectively). However, the magnitude of the effect of P fertilizer varied between runoff events (P < 0.01). Further analysis revealed the combined effects on runoff P concentration of P rate, P rate x number of applications (P < 0.001), P rate x time since fertilizer (P < 0.001), dung P (P < 0.001), time since grazing (P < 0.05), and pasture biomass (P < 0.001). A conceptual model of the sources of P in runoff comprising three components is proposed to explain the mobilization of P in runoff and to identify strategies to reduce runoff P concentrations. Our data suggest that the principal strategy for minimizing runoff P concentrations from grazed dairy pastures should be the maintenance of soil P at or near the agronomic optimum by the use of appropriate rates of P fertilizer.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 021547075

Download citation: RISBibTeXText

Related references

Long-term effects of grazing management and buffer strips on phosphorus runoff from pastures fertilized with poultry litter. References 49(1): 85-96, 2020

Phosphorus fertilizer for nitrogen fertilized dairy pastures. 2. Long term effects on milk production and a model of phosphorus flow. Journal of Agricultural Science 129(2): 219-231, 1997

Dairy heifer manure management, dietary phosphorus, and soil test P effects on runoff phosphorus. Journal of Environmental Quality 41(5): 1600-1611, 2012

Effect of variable soil phosphorus on phosphorus concentrations in simulated surface runoff under intensive dairy pastures. Australian Journal of Soil Research 48(3): 231-237, 2010

Phosphorus fertilizer for nitrogen-fertilized dairy pastures. 3. Milk responses to a dietary phosphorus supplement. Journal of Agricultural Science 129(2): 233-236, 1997

Losses of nitrogen phosphorus and sediment in runoff from hill country under different fertilizer and grazing management regimes. New Zealand Journal of Agricultural Research 28(3): 371-380, 1985

Soil-extractable phosphorus and phosphorus saturation threshold in beef cattle pastures as affected by grazing management and forage type. Environmental Science and Pollution Research International 21(3): 1691-1700, 2014

Effects of grazing management on sediment and phosphorus in pasture runoff. Journal of Animal Science 81(Suppl. 2): 86, 2003

Grazing Management Effects on Sediment and Phosphorus in Surface Runoff. Rangeland ecology and management 59(6): 607-615, 2006

Dairy diet phosphorus effects on phosphorus losses in runoff from land-applied manure. Soil Science Society of America journal 66(1): 284-291, 2002

Dairy diet phosphorus effects on phosphorus losses in runoff from land-applied manure. Soil Science Society of America Journal 66(1): 284-291, 2002

Dairy diet phosphorus and rainfall timing effects on runoff phosphorus from land-applied manure. Journal of Environmental Quality 38(1): 212-217, 2009

Phosphorus fertilizer for nitrogen fertilized dairy pastures. 1. Long term effects on pasture, diet and soil. Journal of Agricultural Science 129(2): 205-217, 1997

Effects of beef cow grazing management on sediment and phosphorus losses from smooth bromegrass pastures. Journal of Dairy Science 87: 291-291, 2004

Effects of beef cow grazing management on sediment and phosphorus losses from smooth bromegrass pastures. Poultry Science 83: 291, 2004