Einfluß von Form und Plazierung der N- und P-Düngung auf Wurzelentwicklung, Phosphat-Aufnahme und Wachstum von Sonnenblumen (Helianthus annus) und Zuckerhirsen (Sorghum bicolor).
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| Title: | Einfluß von Form und Plazierung der N- und P-Düngung auf Wurzelentwicklung, Phosphat-Aufnahme und Wachstum von Sonnenblumen (Helianthus annus) und Zuckerhirsen (Sorghum bicolor). |
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| Alternate Title: | Influence of form and placement of N- and P-fertilisation on the root development, the P-uptake, and the growth of sunflower (Helianthus annuus) and sweet sorghum (Sorghum bicolor). |
| Authors: | Strasser, B.1, Werner, W.1 |
| Source: | Journal of Agronomy & Crop Science. Oct1995, Vol. 175 Issue 3, p157-165. 9p. 1 Diagram, 6 Graphs. |
| Subjects: | Phosphorus in agriculture, Nitrogen in agriculture, Plant roots, Plant development, Agronomy, Crop science |
| Abstract: | In pot- and rhizotrone-experiments with Sorghum bicolor and Helianthus annuus, a higher P-uptake was achieved by placement of diammonphosphate (DAP) than by either placement of triplesuperphosphate (TSP) or by broadcasting DAP or TSP, respectively. Dual placement of TSP and ammonia increased the P uptake but it was less effective than placement of DAP for sunflowers, but not for sweet sorghum. Placement of nitrogen resulted in a local root accumulation, where ammonia had a greater effect than nitrate for both of the species. Single placement of TSP had no effect on either P uptake or root development. Thus, the higher P uptake at DAP placement could be attributed to three main factors: the local root accumulation caused by the placement of nitrogen, a specific physiological ammonia-effect, and the lower binding intensity of the phosphate in the DAP-band compared with placed TSP (WERNER and STRASSER 1993). The improvement in spatial availability caused by the NH+4-induced root accumulation was of a greater importance for the P-uptake than was the improvement of chemical availability in the DAP-band. The better response of sunflowers in comparison with sweet sorghum was attributed to better acquisition ability in sweet sorghum. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Agronomy & Crop Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 18876426 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Einfluß von Form und Plazierung der N- und P-Düngung auf Wurzelentwicklung, Phosphat-Aufnahme und Wachstum von Sonnenblumen (Helianthus annus) und Zuckerhirsen (Sorghum bicolor). – Name: TitleAlt Label: Alternate Title Group: TiAlt Data: Influence of form and placement of N- and P-fertilisation on the root development, the P-uptake, and the growth of sunflower (<em>Helianthus annuus</em>) and sweet sorghum (<em>Sorghum bicolor</em>). – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Strasser%2C+B%2E%22">Strasser, B.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Werner%2C+W%2E%22">Werner, W.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Agronomy+%26+Crop+Science%22">Journal of Agronomy & Crop Science</searchLink>. Oct1995, Vol. 175 Issue 3, p157-165. 9p. 1 Diagram, 6 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Phosphorus+in+agriculture%22">Phosphorus in agriculture</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrogen+in+agriculture%22">Nitrogen in agriculture</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+roots%22">Plant roots</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+development%22">Plant development</searchLink><br /><searchLink fieldCode="DE" term="%22Agronomy%22">Agronomy</searchLink><br /><searchLink fieldCode="DE" term="%22Crop+science%22">Crop science</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In pot- and rhizotrone-experiments with <em>Sorghum bicolor</em> and <em>Helianthus annuus</em>, a higher P-uptake was achieved by placement of diammonphosphate (DAP) than by either placement of triplesuperphosphate (TSP) or by broadcasting DAP or TSP, respectively. Dual placement of TSP and ammonia increased the P uptake but it was less effective than placement of DAP for sunflowers, but not for sweet sorghum. Placement of nitrogen resulted in a local root accumulation, where ammonia had a greater effect than nitrate for both of the species. Single placement of TSP had no effect on either P uptake or root development. Thus, the higher P uptake at DAP placement could be attributed to three main factors: the local root accumulation caused by the placement of nitrogen, a specific physiological ammonia-effect, and the lower binding intensity of the phosphate in the DAP-band compared with placed TSP (WERNER and STRASSER 1993). The improvement in spatial availability caused by the NH+4-induced root accumulation was of a greater importance for the P-uptake than was the improvement of chemical availability in the DAP-band. The better response of sunflowers in comparison with sweet sorghum was attributed to better acquisition ability in sweet sorghum. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Agronomy & Crop Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1111/j.1439-037X.1995.tb00207.x Languages: – Code: ger Text: German PhysicalDescription: Pagination: PageCount: 9 StartPage: 157 Subjects: – SubjectFull: Phosphorus in agriculture Type: general – SubjectFull: Nitrogen in agriculture Type: general – SubjectFull: Plant roots Type: general – SubjectFull: Plant development Type: general – SubjectFull: Agronomy Type: general – SubjectFull: Crop science Type: general Titles: – TitleFull: Einfluß von Form und Plazierung der N- und P-Düngung auf Wurzelentwicklung, Phosphat-Aufnahme und Wachstum von Sonnenblumen (Helianthus annus) und Zuckerhirsen (Sorghum bicolor). Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Strasser, B. – PersonEntity: Name: NameFull: Werner, W. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct1995 Type: published Y: 1995 Identifiers: – Type: issn-print Value: 09312250 Numbering: – Type: volume Value: 175 – Type: issue Value: 3 Titles: – TitleFull: Journal of Agronomy & Crop Science Type: main |
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