| |
| Web URL(s): | http://www.graszaad.info/onderzoeksverslagen/Proceedings%20of%20the%207th%20IHSC.pdf#page=86
Last checked: 11/21/2014
Requires: PDF Reader
Notes: Item is within a single large file |
|---|
| Publication Type:
| Proceedings |
|---|
| Author(s): | Casals, Marie-Laure |
|---|
| Author Affiliation: | French Seed Growers Association (F.N.A.M.S.), Brain sur l'Authion |
|---|
| Title: | Nitrogen fertilization management for seed production of tall fescue |
|---|
| Meeting Info.: | Dallas, Texas: April 11-13, 2010 |
|---|
| Source: | Proceedings of the 7th International Herbage Seed Conference. 2010, p. 75-81. |
|---|
| Publishing Information: | s.l.: s.n. |
|---|
| # of Pages: | 7 |
|---|
| Keywords: | TIC Keywords: Application rates; Fertilization program; Festuca arundinacea; Nitrogen fertilization; Nitrogen uptake; Nutrient balance; Nutrient management; Seed production; Seed yield
|
|---|
| Abstract/Contents: | "In France, rules relative to nitrates use (instruction n° 91/676/CEE) prescribe 3 different compulsory instructions to farms located in sensitive areas: firstly calculation of N supply by method of nitrogen balance per crop, secondarily edition of a forecasting fertilization scheme, thirdly registration of quantities used and spraying dates in respect to forbidden periods. For grass seed production, and especially tall fescue, number of analyses of many experiments carried out by FNAMS, in different areas and years have led to define for the first time the exact N needs for the crop (first trials serial between 1986 and 1994). Then, a good ratio was found between N level uptake and seed yield: 160 kg N uptake /ha (at full ear emergence, from aerial part and root system) is necessary to obtain the maximum seed yield. A N balance method ha been described for the N fertilization management of this grass specie. Following then, different experiments confirmed the validity of this N balance method. In 2007 and 2008, trials have been carried out in different areas of France: south west, centre and north east. In those areas several fields had been selected and three treatments have been compared: T1 without nitrogen (to estimate N soil contribution), T2 calculated with N balance method and T3 based upon the usual farmer practice. For the majority of experiments, the T2 modalities led to reduce the N supply of approximately 10 kg N/ha without any significant difference on seed yield, but varied from 40 kg N/ha to -15 kg N/ha. On the contrary, reduction of N supply (some T3 modalities, compared to T2 - N balance method), decreased significantly seed yield. These experiments also focussed similar N needs between two different fescue types: turf type (variety TOMAHAWK) and forage type (variety DULCIA), and also between first or second year of production. These results demonstrate that a more extensive use of N balance method could improve N fertilization management in these crops, and reduce luxurious N intake." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | Equations
Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Casals, M.-L. 2010. Nitrogen fertilization management for seed production of tall fescue. p. 75-81. In Proceedings of the 7th International Herbage Seed Conference. Dallas, Texas: April 11-13, 2010. s.l.: s.n. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=251287 |
| If there are problems with this record, send us feedback about record 251287. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.graszaad.info/onderzoeksverslagen/Proceedings%20of%20the%207th%20IHSC.pdf#page=86
Last checked: 11/21/2014
Requires: PDF Reader
Notes: Item is within a single large file |
| Find from within TIC:
Digitally in TIC by file name: ihsc2010 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
