| |
| DOI: | 10.2134/agronj2005.0229 |
|---|
| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/98/3/774
Last checked: 11/04/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Pelletier, Sophie;
Bélanger, Gilles;
Tremblay, Gaëtan F.;
Brégard, Annie;
Allard, Guy |
|---|
| Author Affiliation: | Pelletier, Brégard, and Allard: Départment de Phytologie, Faculté des Sciences de l'Agricultrue et de l'alimentation, Université Laval, Québec, Provence de Québec, Canada; Bélanger and Tremblay: Agriculture and Agri-Food Canada, Soils and Crops Research and Development Centre, Québec, Provence de Québec, Canada |
|---|
| Title: | Dietary cation-anion difference of timothy as affected by development stage and nitrogen and phosphorus fertilization |
|---|
| Section: | Forages
Other records with the "Forages" Section
|
|---|
| Source: | Agronomy Journal. Vol. 98, No. 3, May/June 2006, p. 774-780. |
|---|
| Publishing Information: | Madison, WI: American Society of Agronomy |
|---|
| # of Pages: | 7 |
|---|
| Keywords: | TIC Keywords: Phleum pratense; Nitrogen fertilization; Phosphorus fertilizers; Dry weight; Developmental stages; Forage
|
|---|
| Cultivar Names: | Timothy |
|---|
| Abstract/Contents: | "Dry dairy cows (Bos taurus) fed forages with a high dietary cation-anion difference (DCAD) are more likely to develop hypocalcaemia. We determined how development stage at harvest and N and P fertilization can be used to reduce the DCAD to <250 mmolc kg-1 dry matter (DM) for timothy (Phleum pratense L.) grown on a soil high in K content. Stages of development (stem elongation, early heading, late heading, and early flowering) in spring growth, and treatments of P (0, 15, 30, and 45 kg ha-1) and N (0, 60, 120, and 180 kg ha-1) fertilization were evaluated. Concentrations of K, Na, Ca, Mg, Cl, S, and P of timothy were determined and the DCAD was calculated with a short (DCADS) and a long (DCADL) equation. From stem elongation to early flowering, DCADS decreased from 326 to 196 mmolc kg-1 DM and DCADL from 297 to 181 mmolc kg-1 DM; this reduction was attributed to a decrease in K concentration and a slight increase in Cl concentration with development stage. Nitrogen fertilization increased DCADS and DCADL only at stem elongation; the lack of a response at later stages of development is explained by the concomitant increase in both K and Cl concentrations with increasing N fertilization. Phosphorus fertilization did not affect DCADS and DCADL even though it increased timothy P concentration. Harvesting timothy at late heading, with an appropriate N fertilization to ensure adequate yield, is an option to produce a forage with a DCAD of <250 mmolc kg-1 DM on a soil high in K." |
|---|
| Language: | English |
|---|
| References: | 30 |
|---|
| Note: | Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pelletier, S., G. Belanger, G. F. Tremblay, G. Allard, G. Belanger, and A. Brégard. 2006. Dietary cation-anion difference of timothy as affected by development stage and nitrogen and phosphorus fertilization. Agron. J. 98(3):p. 774-780. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=111618 |
| If there are problems with this record, send us feedback about record 111618. |
| Choices for finding the above item: |
|---|
| DOI: 10.2134/agronj2005.0229 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/98/3/774
Last checked: 11/04/2016
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. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
