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Measurement of the effects of pH on phosphate availability
Aims Many soil scientists think that soil phosphate availability is highest at near-neutral pH and decreases with decreasing pH. This belief does not appear to have ever been subjected to experimental test. Methods In a pot trial, we measured response curves to phosphate at seven pH (CaCl2) values r...
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| Published in: | Plant and soil 2020-09, Vol.454 (1-2), p.217-224 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c330t-c1b7da0e07857e08a984ed80d93c39c24d9b6d75d1af3d3eb710a0645b11cdcd3 |
| container_end_page | 224 |
| container_issue | 1-2 |
| container_start_page | 217 |
| container_title | Plant and soil |
| container_volume | 454 |
| creator | Barrow, N.J. Debnath, Abhijit Sen, Arup |
| description | Aims
Many soil scientists think that soil phosphate availability is highest at near-neutral pH and decreases with decreasing pH. This belief does not appear to have ever been subjected to experimental test.
Methods
In a pot trial, we measured response curves to phosphate at seven pH
(CaCl2)
values ranging from 3.99 to 7.26 using three plant species: mustard (
Brassica campestris
), lucerne – also known as alfalfa – (
Medicago sativa
) and rice (
Oryza sativa
). We used a form of the Mitscherlich equation that allowed us to estimate the phosphate contribution from the soil as well as the slope of the response curve and the maximum yield.
Results
Plants grew best near pH 5.5 and worst at near-neutral pH. We think the large decrease in growth with increasing pH was caused by decreasing rate of P uptake by plants. There was a smaller decrease in growth as pH decreased below 5.5. We think this was caused by aluminium toxicity.
Conclusions
The conventional belief that phosphate availability is greatest near neutral pH is wrong. |
| doi_str_mv | 10.1007/s11104-020-04647-5 |
| format | article |
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Many soil scientists think that soil phosphate availability is highest at near-neutral pH and decreases with decreasing pH. This belief does not appear to have ever been subjected to experimental test.
Methods
In a pot trial, we measured response curves to phosphate at seven pH
(CaCl2)
values ranging from 3.99 to 7.26 using three plant species: mustard (
Brassica campestris
), lucerne – also known as alfalfa – (
Medicago sativa
) and rice (
Oryza sativa
). We used a form of the Mitscherlich equation that allowed us to estimate the phosphate contribution from the soil as well as the slope of the response curve and the maximum yield.
Results
Plants grew best near pH 5.5 and worst at near-neutral pH. We think the large decrease in growth with increasing pH was caused by decreasing rate of P uptake by plants. There was a smaller decrease in growth as pH decreased below 5.5. We think this was caused by aluminium toxicity.
Conclusions
The conventional belief that phosphate availability is greatest near neutral pH is wrong.</description><identifier>ISSN: 0032-079X</identifier><identifier>EISSN: 1573-5036</identifier><identifier>DOI: 10.1007/s11104-020-04647-5</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Analysis ; Biomedical and Life Sciences ; Ecology ; Life Sciences ; Measurement ; Phosphates ; Plant Physiology ; Plant Sciences ; Soil Science & Conservation</subject><ispartof>Plant and soil, 2020-09, Vol.454 (1-2), p.217-224</ispartof><rights>Springer Nature Switzerland AG 2020</rights><rights>COPYRIGHT 2020 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c330t-c1b7da0e07857e08a984ed80d93c39c24d9b6d75d1af3d3eb710a0645b11cdcd3</citedby><cites>FETCH-LOGICAL-c330t-c1b7da0e07857e08a984ed80d93c39c24d9b6d75d1af3d3eb710a0645b11cdcd3</cites><orcidid>0000-0002-7695-5351</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Barrow, N.J.</creatorcontrib><creatorcontrib>Debnath, Abhijit</creatorcontrib><creatorcontrib>Sen, Arup</creatorcontrib><title>Measurement of the effects of pH on phosphate availability</title><title>Plant and soil</title><addtitle>Plant Soil</addtitle><description>Aims
Many soil scientists think that soil phosphate availability is highest at near-neutral pH and decreases with decreasing pH. This belief does not appear to have ever been subjected to experimental test.
Methods
In a pot trial, we measured response curves to phosphate at seven pH
(CaCl2)
values ranging from 3.99 to 7.26 using three plant species: mustard (
Brassica campestris
), lucerne – also known as alfalfa – (
Medicago sativa
) and rice (
Oryza sativa
). We used a form of the Mitscherlich equation that allowed us to estimate the phosphate contribution from the soil as well as the slope of the response curve and the maximum yield.
Results
Plants grew best near pH 5.5 and worst at near-neutral pH. We think the large decrease in growth with increasing pH was caused by decreasing rate of P uptake by plants. There was a smaller decrease in growth as pH decreased below 5.5. We think this was caused by aluminium toxicity.
Conclusions
The conventional belief that phosphate availability is greatest near neutral pH is wrong.</description><subject>Analysis</subject><subject>Biomedical and Life Sciences</subject><subject>Ecology</subject><subject>Life Sciences</subject><subject>Measurement</subject><subject>Phosphates</subject><subject>Plant Physiology</subject><subject>Plant Sciences</subject><subject>Soil Science & Conservation</subject><issn>0032-079X</issn><issn>1573-5036</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kFFLwzAQx4MoOKdfwKd-gcxL0yatb2OoEya-KPgW0uSydXRNSTph397M-iz3cNxxv4P_j5B7BgsGIB8iYwwKCjlQKEQhaXlBZqyUnJbAxSWZAfCcgqy_rslNjHs4z0zMyOMb6ngMeMB-zLzLxh1m6ByaMZ7HYZ35Pht2Pg47PWKmv3Xb6abt2vF0S66c7iLe_fU5-Xx--lit6eb95XW13FDDOYzUsEZaDQiyKiVCpeuqQFuBrbnhtckLWzfCytIy7bjl2EgGGkRRNowZayyfk8X0d6s7VG3v_Bi0SWXx0Brfo2vTfim4SHmLWiQgnwATfIwBnRpCe9DhpBiosy416VJJl_rVpcoE8QmK6bjfYlB7fwx9CvYf9QP3Km0l</recordid><startdate>20200901</startdate><enddate>20200901</enddate><creator>Barrow, N.J.</creator><creator>Debnath, Abhijit</creator><creator>Sen, Arup</creator><general>Springer International Publishing</general><general>Springer</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-7695-5351</orcidid></search><sort><creationdate>20200901</creationdate><title>Measurement of the effects of pH on phosphate availability</title><author>Barrow, N.J. ; Debnath, Abhijit ; Sen, Arup</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c330t-c1b7da0e07857e08a984ed80d93c39c24d9b6d75d1af3d3eb710a0645b11cdcd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Analysis</topic><topic>Biomedical and Life Sciences</topic><topic>Ecology</topic><topic>Life Sciences</topic><topic>Measurement</topic><topic>Phosphates</topic><topic>Plant Physiology</topic><topic>Plant Sciences</topic><topic>Soil Science & Conservation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Barrow, N.J.</creatorcontrib><creatorcontrib>Debnath, Abhijit</creatorcontrib><creatorcontrib>Sen, Arup</creatorcontrib><collection>CrossRef</collection><jtitle>Plant and soil</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Barrow, N.J.</au><au>Debnath, Abhijit</au><au>Sen, Arup</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Measurement of the effects of pH on phosphate availability</atitle><jtitle>Plant and soil</jtitle><stitle>Plant Soil</stitle><date>2020-09-01</date><risdate>2020</risdate><volume>454</volume><issue>1-2</issue><spage>217</spage><epage>224</epage><pages>217-224</pages><issn>0032-079X</issn><eissn>1573-5036</eissn><abstract>Aims
Many soil scientists think that soil phosphate availability is highest at near-neutral pH and decreases with decreasing pH. This belief does not appear to have ever been subjected to experimental test.
Methods
In a pot trial, we measured response curves to phosphate at seven pH
(CaCl2)
values ranging from 3.99 to 7.26 using three plant species: mustard (
Brassica campestris
), lucerne – also known as alfalfa – (
Medicago sativa
) and rice (
Oryza sativa
). We used a form of the Mitscherlich equation that allowed us to estimate the phosphate contribution from the soil as well as the slope of the response curve and the maximum yield.
Results
Plants grew best near pH 5.5 and worst at near-neutral pH. We think the large decrease in growth with increasing pH was caused by decreasing rate of P uptake by plants. There was a smaller decrease in growth as pH decreased below 5.5. We think this was caused by aluminium toxicity.
Conclusions
The conventional belief that phosphate availability is greatest near neutral pH is wrong.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s11104-020-04647-5</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-7695-5351</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0032-079X |
| ispartof | Plant and soil, 2020-09, Vol.454 (1-2), p.217-224 |
| issn | 0032-079X 1573-5036 |
| language | eng |
| recordid | cdi_gale_infotracacademiconefile_A636573496 |
| source | JSTOR Archival Journals and Primary Sources Collection; Springer Link |
| subjects | Analysis Biomedical and Life Sciences Ecology Life Sciences Measurement Phosphates Plant Physiology Plant Sciences Soil Science & Conservation |
| title | Measurement of the effects of pH on phosphate availability |
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