| |
| Web URL(s): | http://crops.confex.com/crops/2005am/techprogram/P6875.HTM
Last checked: 01/31/2006 |
|---|
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | Walker, Kristina;
Bigelow, Cale A. |
|---|
| Author Affiliation: | Purdue University |
|---|
| Title: | Nitrogen fertilization effects on three cool-season lawn species in Indiana |
|---|
| Section: | Graduate student oral competition: Breeding, fertility, environment, and management
Other records with the "Graduate student oral competition: Breeding, fertility, environment, and management" Section
|
|---|
| Meeting Info.: | Salt Lake City, UT: 7-10 November, 2005 |
|---|
| Source: | 2005 Annual Meeting Abstracts [ASA/CSSA/SSSA/CSSS]. 2005, p. [1]. |
|---|
| Publishing Information: | [Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: Spring green-up; Application rates; Application frequency; Nitrogen fertilizers; Cool season turfgrasses; Lawn turf; Groundwater contamination; Poa pratensis; Festuca arundinacea; Lolium perenne; Nitrogen response; Dry weight; Tissue testing; Canopy; Visual evaluation; Turfgrass quality; Disease severity
|
|---|
| Geographic Terms: | Indiana |
|---|
| Abstract/Contents: | "There is growing concern that excess nitrogen (N) is being applied to lawns and may be contaminating groundwater. The purpose of this two-year field study was to evaluate current lawn N recommendations and investigate alternative N programs for three cool-season lawn species grown in Indiana: Kentucky bluegrass, turf-type tall fescue, and perennial ryegrass. Eight N programs were designed ranging from 0 to 196 kg N ha-1 yr-1 applied as urea, sulfur coated urea or a combination depending upon season. Turfgrass N response was evaluated using dry matter yields (DMY), leaf tissue N content, and canopy greenness. Visual ratings for turfgrass quality and disease incidence and severity were also regularly recorded. Soil N was monitored using suction cup lysimeters, 45 cm below the soil surface, and by KCl extractions. As expected, DMY increased with N fertilization, especially for turf-type tall fescue. Additionally, leaf tissue N content increased with N rate, ranging from 2-5 %. Plots receiving multiple fall N applications retained their green color longer into the late-fall and generally had faster spring green-up except for Kentucky bluegrass. During July of both years, dollar spot severity was worst in perennial ryegrass, regardless of N program and Kentucky bluegrass receiving low, < 74 kg N ha-1 yr-1 N rates. Soil N levels were generally very low (< 1.5 ppm) except for under Kentucky bluegrass during spring green-up (April-May) where nitrate levels in some plots exceeded 10 ppm . For a moderate quality lawn, turf-type tall fescue or Kentucky bluegrass fertilized at 123 kg N ha-1 yr-1 applied in three annual applications is sufficient with minimal risk of N leaching." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bigelow, C. A., and K. Walker. 2005. Nitrogen fertilization effects on three cool-season lawn species in Indiana. Annu. Meet. Abstr. p. [1]. |
| Fastlink to access this record outside TGIF: https://tic.lib.msu.edu/tgif/flink?recno=107664 |
| If there are problems with this record, send us feedback about record 107664. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://crops.confex.com/crops/2005am/techprogram/P6875.HTM
Last checked: 01/31/2006 |
| 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) |
