Phosphorus release dynamics under phosphate rock and ammonium sulphate in soil amendment
This study was undertaken to assess the release pattern of available phosphorus in a Togo phosphate rock and ammonium sulphate soil amendment. Treatments were prepared through the combinations of soil, phosphate rock (PR) and ammonium sulphate (AS) fertilizer. The treatments were; Control, 12.5g PR,...
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| Format: | Article |
| Language: | English |
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Federation of Eurasian Soil Science Societies
2017-10-01
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| Series: | Eurasian Journal of Soil Science |
| Subjects: | |
| Online Access: | http://ejss.fesss.org/10.18393/ejss.306535 |
| _version_ | 1797698477438795776 |
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| author | Kofi Agyarko Kwame Agyei Frimpong Akwasi Adutwum Abunyewa |
| author_facet | Kofi Agyarko Kwame Agyei Frimpong Akwasi Adutwum Abunyewa |
| author_sort | Kofi Agyarko |
| collection | DOAJ |
| description | This study was undertaken to assess the release pattern of available phosphorus in a Togo phosphate rock and ammonium sulphate soil amendment. Treatments were prepared through the combinations of soil, phosphate rock (PR) and ammonium sulphate (AS) fertilizer. The treatments were; Control, 12.5g PR, 25g PR, 12.5g PR+1g AS, 12.5g PR+2g AS, 25.0g PR+1g AS and 25.0g PR+2g AS kg-1 soil. Standard laboratory methods were used to assess pH, available phosphorus (P) and total phosphorus (P). Generally, the pH of treatments decreased to the lowest levels between the 4th and 6th weeks after amendment. The AS fertilizer treatments had significantly (p≤0.05) lower pH values than those without. Amendments with the 2gAS kg-1 soil had significantly (p≤0.05) lower mean pH values than those with the 1gAS kg-1 soil. The AS fertilizer treatments also had significantly (p ≤ 0.05) higher levels of the available P than those without. The higher the amount of the AS in the amendment, the higher the level of the available P concentration. Increase in the level of AS in the amendment also increased the mean value of the available P released. The peaks of available P released were observed between the 6th and the 8th weeks, after the lowest pH values had been attained. Decreased soil pH relatively increased the amount of phosphorus released (y = -12.47x + 111.4; R2=0.53). Addition of PR in the treatments increased the total P levels. In conclusion, combined application of AS and PR has the potential to increase soil P availability, which is beneficial to crop farmers. |
| first_indexed | 2024-03-12T03:54:41Z |
| format | Article |
| id | doaj.art-61cdc5987f094cb3a8dc64aebfa8cc2b |
| institution | Directory Open Access Journal |
| issn | 2147-4249 2147-4249 |
| language | English |
| last_indexed | 2024-03-12T03:54:41Z |
| publishDate | 2017-10-01 |
| publisher | Federation of Eurasian Soil Science Societies |
| record_format | Article |
| series | Eurasian Journal of Soil Science |
| spelling | doaj.art-61cdc5987f094cb3a8dc64aebfa8cc2b2023-09-03T12:01:18ZengFederation of Eurasian Soil Science SocietiesEurasian Journal of Soil Science2147-42492147-42492017-10-016431231810.18393/ejss.306535Phosphorus release dynamics under phosphate rock and ammonium sulphate in soil amendmentKofi Agyarko0Kwame Agyei Frimpong1Akwasi Adutwum Abunyewa2College of Agriculture Education, University of Education, Winneba, Mampong Campus, GhanaDepartment of Soil Science, University of Cape Coast, GhanaDepartment of Agroforestry, Kwame Nkrumah University of Science and Technology, GhanaThis study was undertaken to assess the release pattern of available phosphorus in a Togo phosphate rock and ammonium sulphate soil amendment. Treatments were prepared through the combinations of soil, phosphate rock (PR) and ammonium sulphate (AS) fertilizer. The treatments were; Control, 12.5g PR, 25g PR, 12.5g PR+1g AS, 12.5g PR+2g AS, 25.0g PR+1g AS and 25.0g PR+2g AS kg-1 soil. Standard laboratory methods were used to assess pH, available phosphorus (P) and total phosphorus (P). Generally, the pH of treatments decreased to the lowest levels between the 4th and 6th weeks after amendment. The AS fertilizer treatments had significantly (p≤0.05) lower pH values than those without. Amendments with the 2gAS kg-1 soil had significantly (p≤0.05) lower mean pH values than those with the 1gAS kg-1 soil. The AS fertilizer treatments also had significantly (p ≤ 0.05) higher levels of the available P than those without. The higher the amount of the AS in the amendment, the higher the level of the available P concentration. Increase in the level of AS in the amendment also increased the mean value of the available P released. The peaks of available P released were observed between the 6th and the 8th weeks, after the lowest pH values had been attained. Decreased soil pH relatively increased the amount of phosphorus released (y = -12.47x + 111.4; R2=0.53). Addition of PR in the treatments increased the total P levels. In conclusion, combined application of AS and PR has the potential to increase soil P availability, which is beneficial to crop farmers.http://ejss.fesss.org/10.18393/ejss.306535Phosphate rockammonium sulphatesoil amendmentpHavailable phosphorustotal phosphorus |
| spellingShingle | Kofi Agyarko Kwame Agyei Frimpong Akwasi Adutwum Abunyewa Phosphorus release dynamics under phosphate rock and ammonium sulphate in soil amendment Eurasian Journal of Soil Science Phosphate rock ammonium sulphate soil amendment pH available phosphorus total phosphorus |
| title | Phosphorus release dynamics under phosphate rock and ammonium sulphate in soil amendment |
| title_full | Phosphorus release dynamics under phosphate rock and ammonium sulphate in soil amendment |
| title_fullStr | Phosphorus release dynamics under phosphate rock and ammonium sulphate in soil amendment |
| title_full_unstemmed | Phosphorus release dynamics under phosphate rock and ammonium sulphate in soil amendment |
| title_short | Phosphorus release dynamics under phosphate rock and ammonium sulphate in soil amendment |
| title_sort | phosphorus release dynamics under phosphate rock and ammonium sulphate in soil amendment |
| topic | Phosphate rock ammonium sulphate soil amendment pH available phosphorus total phosphorus |
| url | http://ejss.fesss.org/10.18393/ejss.306535 |
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