An investigation of the relationship between soil mineral nitrogen in the autumn or spring and optimum nitrogen rate for winter cereals
Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analy...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Harrison, R. [verfasserIn] |
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| Format: |
E-Artikel |
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| Erschienen: |
Oxford, UK: Blackwell Publishing Ltd ; 1995 |
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| Umfang: |
Online-Ressource |
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| Reproduktion: |
2007 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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| Übergeordnetes Werk: |
In: Soil use and management - Oxford [u.a.] : Wiley-Blackwell, 1985, 11(1995), 4, Seite 0 |
| Übergeordnetes Werk: |
volume:11 ; year:1995 ; number:4 ; pages:0 |
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| DOI / URN: |
10.1111/j.1475-2743.1995.tb00954.x |
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| 520 | |a Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots. | ||
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10.1111/j.1475-2743.1995.tb00954.x doi (DE-627)NLEJ241903653 DE-627 ger DE-627 rakwb Harrison, R. verfasserin aut An investigation of the relationship between soil mineral nitrogen in the autumn or spring and optimum nitrogen rate for winter cereals Oxford, UK Blackwell Publishing Ltd 1995 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| Nitrogen In Soil use and management Oxford [u.a.] : Wiley-Blackwell, 1985 11(1995), 4, Seite 0 Online-Ressource (DE-627)NLEJ243926693 (DE-600)2020513-2 1475-2743 nnns volume:11 year:1995 number:4 pages:0 http://dx.doi.org/10.1111/j.1475-2743.1995.tb00954.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 11 1995 4 0 |
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10.1111/j.1475-2743.1995.tb00954.x doi (DE-627)NLEJ241903653 DE-627 ger DE-627 rakwb Harrison, R. verfasserin aut An investigation of the relationship between soil mineral nitrogen in the autumn or spring and optimum nitrogen rate for winter cereals Oxford, UK Blackwell Publishing Ltd 1995 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| Nitrogen In Soil use and management Oxford [u.a.] : Wiley-Blackwell, 1985 11(1995), 4, Seite 0 Online-Ressource (DE-627)NLEJ243926693 (DE-600)2020513-2 1475-2743 nnns volume:11 year:1995 number:4 pages:0 http://dx.doi.org/10.1111/j.1475-2743.1995.tb00954.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 11 1995 4 0 |
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10.1111/j.1475-2743.1995.tb00954.x doi (DE-627)NLEJ241903653 DE-627 ger DE-627 rakwb Harrison, R. verfasserin aut An investigation of the relationship between soil mineral nitrogen in the autumn or spring and optimum nitrogen rate for winter cereals Oxford, UK Blackwell Publishing Ltd 1995 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| Nitrogen In Soil use and management Oxford [u.a.] : Wiley-Blackwell, 1985 11(1995), 4, Seite 0 Online-Ressource (DE-627)NLEJ243926693 (DE-600)2020513-2 1475-2743 nnns volume:11 year:1995 number:4 pages:0 http://dx.doi.org/10.1111/j.1475-2743.1995.tb00954.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 11 1995 4 0 |
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10.1111/j.1475-2743.1995.tb00954.x doi (DE-627)NLEJ241903653 DE-627 ger DE-627 rakwb Harrison, R. verfasserin aut An investigation of the relationship between soil mineral nitrogen in the autumn or spring and optimum nitrogen rate for winter cereals Oxford, UK Blackwell Publishing Ltd 1995 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| Nitrogen In Soil use and management Oxford [u.a.] : Wiley-Blackwell, 1985 11(1995), 4, Seite 0 Online-Ressource (DE-627)NLEJ243926693 (DE-600)2020513-2 1475-2743 nnns volume:11 year:1995 number:4 pages:0 http://dx.doi.org/10.1111/j.1475-2743.1995.tb00954.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 11 1995 4 0 |
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10.1111/j.1475-2743.1995.tb00954.x doi (DE-627)NLEJ241903653 DE-627 ger DE-627 rakwb Harrison, R. verfasserin aut An investigation of the relationship between soil mineral nitrogen in the autumn or spring and optimum nitrogen rate for winter cereals Oxford, UK Blackwell Publishing Ltd 1995 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| Nitrogen In Soil use and management Oxford [u.a.] : Wiley-Blackwell, 1985 11(1995), 4, Seite 0 Online-Ressource (DE-627)NLEJ243926693 (DE-600)2020513-2 1475-2743 nnns volume:11 year:1995 number:4 pages:0 http://dx.doi.org/10.1111/j.1475-2743.1995.tb00954.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 11 1995 4 0 |
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Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots. |
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Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots. |
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Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ241903653</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210707143534.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">120427s1995 xx |||||o 00| ||und c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1111/j.1475-2743.1995.tb00954.x</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ241903653</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Harrison, R.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">An investigation of the relationship between soil mineral nitrogen in the autumn or spring and optimum nitrogen rate for winter cereals</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="a">Oxford, UK</subfield><subfield code="b">Blackwell Publishing Ltd</subfield><subfield code="c">1995</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract. Data from 143 nitrogen (N) response trials on winter cereals carried out at sites across England during the period 1981–1988 were reviewed. Linear regression models for the relationship between optimum N requirements and soil mineral nitrogen (SMN) were evaluated. Multiple regression analyses and F tests were used to determine whether separate regression lines for different combinations of soil group and N Index, substituting for cropping history, were justified, and whether the additional terms used to account for SMN in the 30–60 cm and 60–90 cm depth bands significantly improved the regression model used to fit the data.The results indicated that optimum N requirement can be predicted from SMN 0–30 cm and 30–60 cm data. However, although the slope of the regression line does not change for different combinations of soil group and N Index, the intercept does. If no allowance is made for differences between sites which alter this intercept, the amount of variation in optimum N requirement accounted for by the regression models is considerably reduced. Factors which should be considered are mineralization of previous crop residues, organic manures and indigenous organic N, and the depth to which SMN is accessible by plant roots.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="d">2007</subfield><subfield code="f">Blackwell Publishing Journal Backfiles 1879-2005</subfield><subfield code="7">|2007||||||||||</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Nitrogen</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">In</subfield><subfield code="t">Soil use and management</subfield><subfield code="d">Oxford [u.a.] : Wiley-Blackwell, 1985</subfield><subfield code="g">11(1995), 4, Seite 0</subfield><subfield code="h">Online-Ressource</subfield><subfield code="w">(DE-627)NLEJ243926693</subfield><subfield code="w">(DE-600)2020513-2</subfield><subfield code="x">1475-2743</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:11</subfield><subfield code="g">year:1995</subfield><subfield code="g">number:4</subfield><subfield code="g">pages:0</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1111/j.1475-2743.1995.tb00954.x</subfield><subfield code="q">text/html</subfield><subfield code="x">Verlag</subfield><subfield code="z">Deutschlandweit zugänglich</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-DJB</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">11</subfield><subfield code="j">1995</subfield><subfield code="e">4</subfield><subfield code="h">0</subfield></datafield></record></collection>
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