Effect of green manure and floodwater algae on diurnal fluctuations of floodwater pH and depth of aerobic soil layer under lowland rice conditions
Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1997 |
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| Umfang: |
5 |
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| Reproduktion: |
Springer Online Journal Archives 1860-2002 |
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| Übergeordnetes Werk: |
in: Plant and soil - 1948, 192(1997) vom: Feb., Seite 161-165 |
| Übergeordnetes Werk: |
volume:192 ; year:1997 ; month:02 ; pages:161-165 ; extent:5 |
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NLEJ195548728 |
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| 520 | |a Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value. | ||
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(DE-627)NLEJ195548728 DE-627 ger DE-627 rakwb eng Effect of green manure and floodwater algae on diurnal fluctuations of floodwater pH and depth of aerobic soil layer under lowland rice conditions 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value. Springer Online Journal Archives 1860-2002 Thind, H.S. oth Rowell, D.L. oth in Plant and soil 1948 192(1997) vom: Feb., Seite 161-165 (DE-627)NLEJ18899016X (DE-600)1478535-3 1573-5036 nnns volume:192 year:1997 month:02 pages:161-165 extent:5 http://dx.doi.org/10.1023/A:1004236811955 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 192 1997 2 161-165 5 |
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(DE-627)NLEJ195548728 DE-627 ger DE-627 rakwb eng Effect of green manure and floodwater algae on diurnal fluctuations of floodwater pH and depth of aerobic soil layer under lowland rice conditions 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value. Springer Online Journal Archives 1860-2002 Thind, H.S. oth Rowell, D.L. oth in Plant and soil 1948 192(1997) vom: Feb., Seite 161-165 (DE-627)NLEJ18899016X (DE-600)1478535-3 1573-5036 nnns volume:192 year:1997 month:02 pages:161-165 extent:5 http://dx.doi.org/10.1023/A:1004236811955 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 192 1997 2 161-165 5 |
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(DE-627)NLEJ195548728 DE-627 ger DE-627 rakwb eng Effect of green manure and floodwater algae on diurnal fluctuations of floodwater pH and depth of aerobic soil layer under lowland rice conditions 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value. Springer Online Journal Archives 1860-2002 Thind, H.S. oth Rowell, D.L. oth in Plant and soil 1948 192(1997) vom: Feb., Seite 161-165 (DE-627)NLEJ18899016X (DE-600)1478535-3 1573-5036 nnns volume:192 year:1997 month:02 pages:161-165 extent:5 http://dx.doi.org/10.1023/A:1004236811955 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 192 1997 2 161-165 5 |
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(DE-627)NLEJ195548728 DE-627 ger DE-627 rakwb eng Effect of green manure and floodwater algae on diurnal fluctuations of floodwater pH and depth of aerobic soil layer under lowland rice conditions 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value. Springer Online Journal Archives 1860-2002 Thind, H.S. oth Rowell, D.L. oth in Plant and soil 1948 192(1997) vom: Feb., Seite 161-165 (DE-627)NLEJ18899016X (DE-600)1478535-3 1573-5036 nnns volume:192 year:1997 month:02 pages:161-165 extent:5 http://dx.doi.org/10.1023/A:1004236811955 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 192 1997 2 161-165 5 |
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(DE-627)NLEJ195548728 DE-627 ger DE-627 rakwb eng Effect of green manure and floodwater algae on diurnal fluctuations of floodwater pH and depth of aerobic soil layer under lowland rice conditions 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value. Springer Online Journal Archives 1860-2002 Thind, H.S. oth Rowell, D.L. oth in Plant and soil 1948 192(1997) vom: Feb., Seite 161-165 (DE-627)NLEJ18899016X (DE-600)1478535-3 1573-5036 nnns volume:192 year:1997 month:02 pages:161-165 extent:5 http://dx.doi.org/10.1023/A:1004236811955 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 192 1997 2 161-165 5 |
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Effect of green manure and floodwater algae on diurnal fluctuations of floodwater pH and depth of aerobic soil layer under lowland rice conditions |
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Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value. |
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Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value. |
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Abstract The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value. |
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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">NLEJ195548728</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210708011602.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">070526s1997 xx |||||o 00| ||eng c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ195548728</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="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Effect of green manure and floodwater algae on diurnal fluctuations of floodwater pH and depth of aerobic soil layer under lowland rice conditions</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1997</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">5</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 The present investigation was undertaken to elucidate the effect of floodwater algae and green manure on floodwater pH and depth of aerobic soil layer which are mainly responsible for the nitrogen losses in lowland rice production systems. The study was conducted in an environmental chamber using a sandy loam soil. Cylindrical plastic bottles 7 cm in diameter were used and 5 cm soil layer covered with 5 cm deep floodwater was created in each bottle to simulate submerged rice conditions. The presence of algae in the floodwater increased the floodwater pH owing to removal of CO2 during photosynthesis during the day, the value decreasing again during the night. Addition of green manure, without algal growth, depressed the pH for the first week and after 4 weeks of incubation. With algae, the application of green manure in vitro resulted in lower diurnal pH increases especially for the first 2 weeks of incubation and a consistently higher morning pH throughout the study. The addition of green manure eliminated the aerobic soil layer below the soil-water interface, presumably because green manure cause a high O2 demand owing to increased microbial activity which results in a lower Eh value.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">Springer Online Journal Archives 1860-2002</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Thind, H.S.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Rowell, D.L.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">in</subfield><subfield code="t">Plant and soil</subfield><subfield code="d">1948</subfield><subfield code="g">192(1997) vom: Feb., Seite 161-165</subfield><subfield code="w">(DE-627)NLEJ18899016X</subfield><subfield code="w">(DE-600)1478535-3</subfield><subfield code="x">1573-5036</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:192</subfield><subfield code="g">year:1997</subfield><subfield code="g">month:02</subfield><subfield code="g">pages:161-165</subfield><subfield code="g">extent:5</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1023/A:1004236811955</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-SOJ</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">192</subfield><subfield code="j">1997</subfield><subfield code="c">2</subfield><subfield code="h">161-165</subfield><subfield code="g">5</subfield></datafield></record></collection>
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