| |
| Publication Type:
| Refereed |
|---|
| Author(s): | Sullivan, D. M.;
Nartea, T. J.;
Bary, A. I.;
Cogger, C. G.;
Myhre, E. A. |
|---|
| Author Affiliation: | Sullivan: Department of Crop and Soil Science, Oregon State University, Corvallis, Oregon; Nartea: Center for Environmental Farming Systems, North Carolina State University, Raleigh, North Carolina; Bary, Cogger and Myhre: Department of Crop and Soil Sciences, Washington State University, Puyallup, Washington |
|---|
| Title: | Nitrogen availability and decomposition of urban yard trimmings in soil |
|---|
| Source: | Soil Science. Vol. 169, No. 10, October 2004, p. 697-707. |
|---|
| Publishing Information: | Baltimore, MD: Lippincott Williams and Wilkins |
|---|
| # of Pages: | 11 |
|---|
| Related Web URL: | http://journals.lww.com/soilsci/Abstract/2004/10000/Nitrogen_Availability_and_Decomposition_of_Urban.3.aspx
Last checked: 06/30/2011
Notes: Abstract only |
|---|
| Keywords: | TIC Keywords: Application rates; Clipping utilization; Clippings; Decomposition; Nitrogen availability; Regulations
|
|---|
| Abstract/Contents: | "Application of yard trimmings from urban landscapes onto farmland is an emerging recycling alternative in the Pacific Northwest of the United States. Estimates of the plant-available nitrogen provided by yard trimmings are needed to meet grower demands and environmental regulations. Our objectives were to: (i) estimate the available N provided by yard trimmings containing grass clippings and woody plant materials, (ii) evaluate the impact of aging on the available N supplied by grass clippings, and (iii) identify laboratory analyses that are correlated with N mineralized from yard trimmings in soil. Yard trimmings were mixed with sandy loam soil and incubated at 25 °C to determine N availability and CO2 loss. Mixed grass clippings + woody trimmings with typical C:N ratios of 15 to 19 had an available N equivalent of 10 to 14% of total N; grass clippings alone had an available N equivalent of 21 to 37% of total N. Aging of grass clippings for 14 to 28 days in unmanaged piles increased NH4-N, ash, and lignin concentrations. Aging also reduced N and C mineralized from grass clippings in the soil. Nitrogen mineralized from yard trimmings in soil was correlated (R2 = 0.64 to 0.78) with the yard trimmings total N, C:N, lignin, carbohydrate + hemicellulose concentrations, and with CO2 evolution during a 7-day incubation in the soil. Based on the present study, it seems unlikely that excess N will be provided by typical application rates of mixed yard trimmings. Mixed yard trimmings with a typical moisture of 600 g kg-1, total N of 17 g kg-1 (dry matter basis), and N availability equal to 15% of total N supplied approximately 1 kg of available N per metric ton." |
|---|
| Language: | English |
|---|
| References: | 25 |
|---|
| Note: | Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sullivan, D. M., T. J. Nartea, A. I. Bary, C. G. Cogger, and E. A. Myhre. 2004. Nitrogen availability and decomposition of urban yard trimmings in soil. Soil Science. 169(10):p. 697-707. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=152559 |
| If there are problems with this record, send us feedback about record 152559. |
| Choices for finding the above item: |
|---|
| 
MSU catalog number: b2220467 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
