Skip to main content

Phosphorus Mobility on Biosolids Amended Rangelands

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Abstract:

The state of Utah has been concerned about excess P in soils that had received biosolids application, especially at loading rates that exceed crop nutrient requirements. The biosolids loading rates have been based on N crop requirements, which results in excess P in biosolids-amended soils. Therefore, the mobility of phosphorus in biosolids-amended soils in western Utah was investigated to address this issue. Three different types of biosolids including lime stabilized, aerobically digested, and anaerobically digested biosolids were land applied on 1/3-acre test plots at a variety of application rates (up to twenty times the estimated agronomic rate). The total P appeared to accumulate in the soil surface (i.e. 0.75 ft) for all different biosolids-amended soils. Accumulation of total P at the further soil depths (i.e. 0.75, 2, 3, 4, and 5 ft) was lower than that of the soil surface. No consistent trend was found with respect to the change of total P in terms of time (i.e. Year 1 and Year 2 following biosolids application). The accumulation of the plant available P (Olsen P) along the soil depths exhibited the same tendency with that of the total P. The P leachability from biosolids land application was low because the ratios of total P to Al+Fe were below 1 in all biosolids-amended test plots. The biomass yields at the test sites were enhanced as compared against the control. It was concluded that N-based biosolids land application did not result in significant P leachability that could pose a risk to the ground water source, human health, and the environment.

Document Type: Research Article

DOI: https://doi.org/10.2175/193864708788806881

Publication date: 2008-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more