| |
| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/75/4/AJ0750040603
Last checked: 12/08/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Thompson, D. C.;
Smiley, R. W.;
Fowler, M. Craven |
|---|
| Author Affiliation: | Thompson: Former Graduate Research Assistant; Smiley: Associate Professor; Fowler: Research Support Aid, Department of Plant Pathology, Cornell University, Ithaca, New York |
|---|
| Title: | Oxidation status and gas composition of wet turfgrass thatch and soil |
|---|
| Source: | Agronomy Journal. Vol. 75, No. 4, July/August 1983, p. 603-609. |
|---|
| Publishing Information: | Madison, WI: American Society of Agronomy |
|---|
| # of Pages: | 7 |
|---|
| Keywords: | TIC Keywords: Redox potential; Thatch; Poa pratensis; Oxidation; Disease susceptibility; Carbon dioxide; Oxygen; Ethylene; Lime; Soil amendments; Anaerobes; Drainage; Calcium arsenate; Calcium nitrate; Soil temperature; Coring
|
|---|
| Abstract/Contents: | "Excess thatch in turfgrasses is often associated with decreased plant vigor and increased disease susceptibility. Thatch is the primary rooting medium for many grasses, and is a substrate that possesses many prerequisites for anaerobiosis. The oxidation status and the gas composition in unsaturated thatch of mature Kentucky bluegrass (Poa pratensis L.) were measured to determine if anaerobiosis occurs under field and greenhouse conditions. Soils under the sods included a Hudson silty clay loam (fine, illitic, mesic Glossaquic Hapludolf), a Riverhead sandy loam (coarse-loamy, mixed, mesic Typic Dystrochrept), and an Arkport fine sandy loam (coarse-loamy, mixed, mesic Psammentic Hapludalf). Measurements of redox potentials (Eh) and concentrations of oxygen (O2), carbon dioxide (CO2) and ethylene (C2H4) were made. Conditions of poor oxidation, including low Eh and O2 and CO2 concentrations, and accumulations of C2H4, were measured in thatch on poorly drained soils in the field and in the greenhouse. Applications of lime and calcium arsenate amplified the extent of poor oxidation in thatch, whereas calcium nitrate improved the oxidation status. Thatch depth and a coring procedure did not influence thatch oxidation. The Eh varied diurnally and was lowest in wet thatches during warm, sunny days when thatch became warmer (by up to 7 °C) than the air. Poorly oxidized conditions for periods over 7h were measured in moist but unsaturated thatch in the field. The temperature of thatch appeared to be important in governing the oxidation status. Measurements of Eh were considered to provide rapid and useful insights into the gaseous composition of wet thatches. Our results imply that phytotoxic products of poorly oxidized environments may accumulate in wet thatch on warm sunny days. Such conditions may also be common in field-grown cores of mature turfgrass which are moved to the greenhouse for study. The relevance of these results to the occurrence of diseases such as Fusarium blight are discussed." |
|---|
| Language: | English |
|---|
| References: | 26 |
|---|
| Note: | Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Thompson, D. C., R. W. Smiley, and M. C. Fowler. 1983. Oxidation status and gas composition of wet turfgrass thatch and soil. Agron. J. 75(4):p. 603-609. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=468 |
| If there are problems with this record, send us feedback about record 468. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/75/4/AJ0750040603
Last checked: 12/08/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: S 22 .A45 |
| Find from within TIC:
Digitally in TIC by record number.
Physical sequential file in TIC. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
