Exploitation of soil by roots as influenced by phosphorus applications
According to literature, the mechanism of P acquisition by roots is mainly through interception. Sufficient P uptake is only ensured by proper root development. Pot and field experiments were conducted to determine the percentage "exploitation" or "utilization" of the soil volume...
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| Veröffentlicht in: | Communications in soil science and plant analysis 2005, Vol.36 (1-3), p.393-402 |
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| creator | Kamper, M Claassens, A.S |
| description | According to literature, the mechanism of P acquisition by roots is mainly through interception. Sufficient P uptake is only ensured by proper root development. Pot and field experiments were conducted to determine the percentage "exploitation" or "utilization" of the soil volume by roots and to study the influence of P on Zea mays root growth. For the two pot trials, four P levels (0, 20, 40, and 80 mg kg(-1)) were used, with additional N (100 kg ha(-1)) and K (75 kg ha(-1)). The field trial consisted of a high-P (Bray-1: 70 mg kg(-1)) plot and a low-P (Bray-1: 7 mg kg(-1)) plot, sampled to a depth of 80 cm. The Gompertz function was used to describe exploitation by roots as influenced by P application. Less than 5% of the soil volume was exploited by the root system for the pot and 0 to 10 cm depth in the field trial, with |
| doi_str_mv | 10.1081/CSS-200043109 |
| format | Article |
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Sufficient P uptake is only ensured by proper root development. Pot and field experiments were conducted to determine the percentage "exploitation" or "utilization" of the soil volume by roots and to study the influence of P on Zea mays root growth. For the two pot trials, four P levels (0, 20, 40, and 80 mg kg(-1)) were used, with additional N (100 kg ha(-1)) and K (75 kg ha(-1)). The field trial consisted of a high-P (Bray-1: 70 mg kg(-1)) plot and a low-P (Bray-1: 7 mg kg(-1)) plot, sampled to a depth of 80 cm. The Gompertz function was used to describe exploitation by roots as influenced by P application. Less than 5% of the soil volume was exploited by the root system for the pot and 0 to 10 cm depth in the field trial, with <1% exploitation for the deeper layers. P had a highly significant (p < 0.001) effect on root growth in the pot trials (optimal conditions) but no significant effect in the field trial, where rainfall determined root development, especially in the deeper soil layers. Gompertz functions showed that an increase in P application rate increased growth and growth rates and is a helpful aid in revealing small differences among different treatments. The study indicates that a P deficiency may not be a soil chemical, but rather a root-related phenomenon.</description><identifier>ISSN: 0010-3624</identifier><identifier>EISSN: 1532-2416</identifier><identifier>DOI: 10.1081/CSS-200043109</identifier><identifier>CODEN: CSOSA2</identifier><language>eng</language><publisher>Philadelphia, PA: Taylor & Francis Group</publisher><subject>Agronomy. Soil science and plant productions ; Biological and medical sciences ; corn ; fertilizer application ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Gompertz function ; Interactions ; Nitrogen, phosphorus, potassium fertilizations ; phosphorus ; Rainfall ; Root development ; root growth ; roots ; Soil exploitation ; Soil-plant relationships. Soil fertility ; Soil-plant relationships. Soil fertility. Fertilization. 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Sufficient P uptake is only ensured by proper root development. Pot and field experiments were conducted to determine the percentage "exploitation" or "utilization" of the soil volume by roots and to study the influence of P on Zea mays root growth. For the two pot trials, four P levels (0, 20, 40, and 80 mg kg(-1)) were used, with additional N (100 kg ha(-1)) and K (75 kg ha(-1)). The field trial consisted of a high-P (Bray-1: 70 mg kg(-1)) plot and a low-P (Bray-1: 7 mg kg(-1)) plot, sampled to a depth of 80 cm. The Gompertz function was used to describe exploitation by roots as influenced by P application. Less than 5% of the soil volume was exploited by the root system for the pot and 0 to 10 cm depth in the field trial, with <1% exploitation for the deeper layers. P had a highly significant (p < 0.001) effect on root growth in the pot trials (optimal conditions) but no significant effect in the field trial, where rainfall determined root development, especially in the deeper soil layers. Gompertz functions showed that an increase in P application rate increased growth and growth rates and is a helpful aid in revealing small differences among different treatments. The study indicates that a P deficiency may not be a soil chemical, but rather a root-related phenomenon.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>corn</subject><subject>fertilizer application</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General agronomy. Plant production</subject><subject>Gompertz function</subject><subject>Interactions</subject><subject>Nitrogen, phosphorus, potassium fertilizations</subject><subject>phosphorus</subject><subject>Rainfall</subject><subject>Root development</subject><subject>root growth</subject><subject>roots</subject><subject>Soil exploitation</subject><subject>Soil-plant relationships. Soil fertility</subject><subject>Soil-plant relationships. Soil fertility. Fertilization. Amendments</subject><subject>Zea mays</subject><issn>0010-3624</issn><issn>1532-2416</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNp1kE1PwzAMhiMEEmNw5EwvHAPOR9PmiKYNkCZxGDtHadpAUdZUSSfovyejfJw4WJbt57XlF6FLAjcESnK72GwwBQDOCMgjNCM5o5hyIo7RDIAAZoLyU3QW41sqZQF0hlbLj975dtBD67vM2yz61mXVmAXvh5jpmLWddfumM019aPevPqYI-zTre9eaL2E8RydWu9hcfOc52q6Wz4sHvH66f1zcrbGheT7g3FKS04YLQrkpRQHSCFJCra0xQBvGGLd1XeVlYQ2ngoiqliIX0ljRgOUVmyM87TXBxxgaq_rQ7nQYFQF1MEElE9SvCYm_nvheR6OdDbozbfwTiYJwkDxx5cSlb33Y6XcfXK0GPToffkTsvxNXk9Rqr_RLSOR2Q4EwACkZB8o-ATS3d_s</recordid><startdate>2005</startdate><enddate>2005</enddate><creator>Kamper, M</creator><creator>Claassens, A.S</creator><general>Taylor & Francis Group</general><general>Taylor & Francis</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2005</creationdate><title>Exploitation of soil by roots as influenced by phosphorus applications</title><author>Kamper, M ; Claassens, A.S</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c255t-5f2152e46124c86709c6180dafcc02e3334fddb587fc42616bd96569cf6e0f4b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Agronomy. Soil science and plant productions</topic><topic>Biological and medical sciences</topic><topic>corn</topic><topic>fertilizer application</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General agronomy. Plant production</topic><topic>Gompertz function</topic><topic>Interactions</topic><topic>Nitrogen, phosphorus, potassium fertilizations</topic><topic>phosphorus</topic><topic>Rainfall</topic><topic>Root development</topic><topic>root growth</topic><topic>roots</topic><topic>Soil exploitation</topic><topic>Soil-plant relationships. Soil fertility</topic><topic>Soil-plant relationships. Soil fertility. Fertilization. Amendments</topic><topic>Zea mays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kamper, M</creatorcontrib><creatorcontrib>Claassens, A.S</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Communications in soil science and plant analysis</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kamper, M</au><au>Claassens, A.S</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Exploitation of soil by roots as influenced by phosphorus applications</atitle><jtitle>Communications in soil science and plant analysis</jtitle><date>2005</date><risdate>2005</risdate><volume>36</volume><issue>1-3</issue><spage>393</spage><epage>402</epage><pages>393-402</pages><issn>0010-3624</issn><eissn>1532-2416</eissn><coden>CSOSA2</coden><abstract>According to literature, the mechanism of P acquisition by roots is mainly through interception. Sufficient P uptake is only ensured by proper root development. Pot and field experiments were conducted to determine the percentage "exploitation" or "utilization" of the soil volume by roots and to study the influence of P on Zea mays root growth. For the two pot trials, four P levels (0, 20, 40, and 80 mg kg(-1)) were used, with additional N (100 kg ha(-1)) and K (75 kg ha(-1)). The field trial consisted of a high-P (Bray-1: 70 mg kg(-1)) plot and a low-P (Bray-1: 7 mg kg(-1)) plot, sampled to a depth of 80 cm. The Gompertz function was used to describe exploitation by roots as influenced by P application. Less than 5% of the soil volume was exploited by the root system for the pot and 0 to 10 cm depth in the field trial, with <1% exploitation for the deeper layers. P had a highly significant (p < 0.001) effect on root growth in the pot trials (optimal conditions) but no significant effect in the field trial, where rainfall determined root development, especially in the deeper soil layers. Gompertz functions showed that an increase in P application rate increased growth and growth rates and is a helpful aid in revealing small differences among different treatments. The study indicates that a P deficiency may not be a soil chemical, but rather a root-related phenomenon.</abstract><cop>Philadelphia, PA</cop><pub>Taylor & Francis Group</pub><doi>10.1081/CSS-200043109</doi><tpages>10</tpages></addata></record> |
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| ispartof | Communications in soil science and plant analysis, 2005, Vol.36 (1-3), p.393-402 |
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| source | Taylor & Francis Journals Complete |
| subjects | Agronomy. Soil science and plant productions Biological and medical sciences corn fertilizer application Fundamental and applied biological sciences. Psychology General agronomy. Plant production Gompertz function Interactions Nitrogen, phosphorus, potassium fertilizations phosphorus Rainfall Root development root growth roots Soil exploitation Soil-plant relationships. Soil fertility Soil-plant relationships. Soil fertility. Fertilization. Amendments Zea mays |
| title | Exploitation of soil by roots as influenced by phosphorus applications |
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