Journal article
Nitrate Leaching in a Sludge-Treated Forest Soil
Soil Science Society of America Journal, Vol.43(2), pp.278-282
1979
Abstract
Anaerobically digested liquid sludge was applied during two separate periods to plots in a mixed hardwood forest. High treatment plots received 26.96 metric tons/ha total solids and 3,034 kg/ha N loadings during the two applications, and low treatment plots received approximately half these loadings. Percolate samples collected at the 15-cm depth contained a maximum of 290 mg/liter NO3--N in the high treatment and 194 mg/liter NO3--N in the low treatment. Maximum monthly levels of NO3--N in percolate sampled at the 120-cm depth lagged 6 months behind peak levels at the 15-cm depth. Calculated average active transmitting soil porosity (Pact), based on field water budget data over this 6-month period, ranged from 15 to 22%. A CSMP computer simulation model based on a solution to the convection diffusion equation estimated the average Pact to be 15%. Since these data indicate that 27 to 50% of the pores may be stagnant, this suggests that soluble NO3--N was being channeled through interconnected macropores in the soil profile.
Details
- Title
- Nitrate Leaching in a Sludge-Treated Forest Soil
- Authors
- Roy C Sidle (Author)L T Kardos (Author)
- Publication details
- Soil Science Society of America Journal, Vol.43(2), pp.278-282
- Publisher
- Soil Science Society of America
- Date published
- 1979
- DOI
- 10.2136/sssaj1979.03615995004300020006x
- ISSN
- 0361-5995
- Organisation Unit
- University of the Sunshine Coast, Queensland; Sustainability Research Cluster
- Language
- English
- Record Identifier
- 99450526602621
- Output Type
- Journal article
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