| |
| DOI: | 10.1016/j.eja.2011.10.001 |
|---|
| Web URL(s): | http://www.sciencedirect.com/science/article/pii/S1161030111001122
Last checked: 07/03/2013
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | L贸pez-Bellido, Rafael J.;
L贸pez-Bellido, Luis;
Fern谩ndez-Garc铆a, Purificaci贸n;
L贸pez-Bellido, Juan M.;
Mu帽oz-Romero, Ver贸nica;
L贸pez-Bellido, Pedro J.;
Calvache, Sara |
|---|
| Author Affiliation: | L贸pez-Bellido, R. J., L贸pez-Bellido, L., Fern谩ndez-Garc铆a, Mu帽oz-Romero, L贸pez-Bellido, P. J. and Calvache: Department of Ciencias y Recursos Agr铆colas y Forestales, Universidad de C贸rdoba, C贸rdoba, Spain; L贸pez-Bellido, J. M.: Real Golf de Pedre帽a, Pedre帽a, Cantabria, Spain |
|---|
| Title: | Nitrogen remote diagnosis in a creeping bentgrass golf green |
|---|
| Source: | European Journal of Agronomy. Vol. 37, No. 1, February 2012, p. 23-30. |
|---|
| Publishing Information: | Amsterdam, the Netherlands: Elsevier Science Pub. Co. |
|---|
| # of Pages: | 8 |
|---|
| Keywords: | TIC Keywords: Aesthetic values; Agrostis stolonifera; Application rates; Clipping weight; Color evaluation; Image analysis; Nitrogen fertilization; Playability
|
|---|
| Cultivar Names: | L-93 |
|---|
| Abstract/Contents: | "Nitrogen fertilization is a key factor of the aesthetics and playability for golf greens. Nitrogen fertilization management is based on predetermined scheduled applications, set rates, or expected improvement in visual quality and green speed. As a consequence, the objective of this study was to obtain seasonal N application models (algorithms) based on remote sensing, optimizing playability and aesthetic quality. A 3-yr field study under Mediterranean conditions was conducted on an experimental 'L-93' creeping bentgrass (Agrostis stolonifera L.) USGA green, to examine effects of seasonal N fertilizer rates on color, clipping yields, and ball roll (green speed). The remote sensors used were a digital camera and reflectance meter (FieldScout CM1000 Chlorophyll Meter). From digital photographs, a dark green color index (DGCI) was calculated. All data were normalized (relative). For all seasons, a third-order polynomial response model was the best when using a CM1000 and a digital camera. Clipping yields and ball roll regressions were linear, increasing and decreasing when the N fertilizer rate increased, respectively. Ball roll and clipping relative values were correlated with both sensors. To fit a seasonal optimum N fertilizer rate model as a function of remote sensors and the other measured parameters, the intersection of models obtained from relative values of CM1000 and digital camera with ball roll and clipping was calculated, but ball roll was considered the most suitable. The model of the digital camera with automatic settings was less accurate and underestimated the optimum N rate. However, because the actual values of digital camera and CM1000 were correlated, converting DGCI values and applying CM1000 models enabled the obtaining of practically the same N fertilizer applications. A practical application procedure of these seasonal models for an entire golf course was also shown. Actual N recommendation applications with a quick remote diagnosis (CM1000) for creeping bentgrass golf green are feasible under similar management practices in Mediterranean environments. A digital camera can also be used successfully, but it should be better when its analysis is based on CM1000 models." |
|---|
| Language: | English |
|---|
| References: | 45 |
|---|
| Note: | Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
L贸pez-Bellido, R. J., L. L贸pez-Bellido, P. Fern谩ndez-Garc铆a, J. M. L贸pez-Bellido, V. Mu帽oz-Romero, P. J. L贸pez-Bellido, et al. 2012. Nitrogen remote diagnosis in a creeping bentgrass golf green. European Journal of Agronomy. 37(1):p. 23-30. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=223806 |
| If there are problems with this record, send us feedback about record 223806. |
| Choices for finding the above item: |
|---|
| DOI: 10.1016/j.eja.2011.10.001 |
| Web URL(s):
http://www.sciencedirect.com/science/article/pii/S1161030111001122
Last checked: 07/03/2013
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b4885258 |
| 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) |
