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| Author(s): | Simon, Jean-Claude;
Delecolle, Richard |
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| Author Affiliation: | Simon: I.N.R.A., Station d'Agronomie, Quimper; Delecolle: I.N.R.A., Station de Bioclimatologie, Centre de Recherches d'Arignon, Montfavet |
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| Title: | Recherche des facteurs responsables du déclenchement du tallage chez le ray-grass d'Italie (Lolium multiflorum Lam.) en conditions naturelles |
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| Translated Title: | Determining factors for the the beginning of tillering in Italian rye-grass (Lolium multiflorum Lam.) under field conditions |
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| Source: | Agronomie. Vol. 3, No. 7, 1983, p. 621-628. |
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| Publishing Information: | Paris, France |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Lolium multiflorum; Temperatures; Radiation; Tillering
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| Geographic Terms: | France |
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| Abstract/Contents: | "The relationship between climate and time from emergence to tillering in Italian rye-grass under field conditions has been investigated through multiple regression. In order to protect the results from the instability which arises from high correlations between climatic predictors, ridge regression was used, with a ridge coefficient k=0.1. Provided soil water is not limiting, the predictors with highest weight were first, radiation and air temperature then soil tmeperature, but only 50% of the variability could be explained in this way. The field results were nevertheless consistent with the literature, which most often deals with experiments under controlled conditions. Using daily soil temperature above 0°C, a temperature sum of 284 degree-days from emergence gave a good estimation of the beginning of tillering." |
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| Language: | French |
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| References: | 21 |
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| Note: | Summary appears in English
Summary as abstract
Tables
Figures
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Simon, J.-C., and R. Delecolle. 1983. Recherche des facteurs responsables du déclenchement du tallage chez le ray-grass d'Italie (Lolium multiflorum Lam.) en conditions naturelles. (In French) Agronomie. 3(7):p. 621-628. |
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