Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield
Source of P fertilizer which is used by farmers in upland acid soils area is generally acidulated phosphate rock (PR),such as tripel super phosphate (TSP), super phosphate 36% P2O5 (SP-36), as well as partial acidulated phosphate rock (PAPR) which contain 10-30% P2O5. Their effectiveness, however, v...
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| Format: | Article |
| Language: | English |
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University of Lampung
2013-03-01
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| Series: | Journal of Tropical Soils |
| Subjects: | |
| Online Access: | http://journal.unila.ac.id/index.php/tropicalsoil/article/view/559/812 |
| _version_ | 1818531341736607744 |
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| author | Nurjaya Dedi Nursyamsi |
| author_facet | Nurjaya Dedi Nursyamsi |
| author_sort | Nurjaya |
| collection | DOAJ |
| description | Source of P fertilizer which is used by farmers in upland acid soils area is generally acidulated phosphate rock (PR),such as tripel super phosphate (TSP), super phosphate 36% P2O5 (SP-36), as well as partial acidulated phosphate rock (PAPR) which contain 10-30% P2O5. Their effectiveness, however, varies and depends on the soil and planttypes. Phosphate rock fertilizers have a high prospects for acid soils because its effectiveness equals to the SP-36,cheaper, slow release, and its application can also leave the residual P in the soil that available for plants for next few seasons. Field experiment aimed to study the effectiveness of direct application of PR at upland acid soils and its effect on soil available-P as well as maize (Zea mays L.) yield was conducted in Acid Inceptisols of Ciampea,Bogorin wet season years 2008/2009. The experiment was arranged by a Randomized Completely Block Design with 3 replications. Maize of P-12 variety was used as a plant indicator. The treatment consisted of 6 levels of phosphate rock: 0, 20, 30, 40, 50, and 60 kg P ha-1, as well as one level of SP-36 40 kg P ha-1 as standard fertilizer. In addition, urea of 300 kg ha-1 and KCl of 100 kg ha-1 were used as basal fertilization. The result showed that the application of PRin the amount ranging from 20 to 60 kg P ha-1 increased total-P and available-P, and pH, decreased exchangeable Al in the soils as well as increased maize straw and grain. Phosphate rock application at 40 kg P ha-1 level was equally effective as SP-36 in the tested soils. Critical level of soil P for maize grown in the soil was 675 and 5.00 mg P2O5 kg-1 extracted with HCl 25% and Bray I, respectively. The requirement of P for maize grown in the soil to achieve maximum profit was 38 kg P ha-1 and 17.5 kg P ha-1 or equivalent to PR of 583 and 268 kg ha-1 in low (soil P < critical level) and high (soil P > critical level) soil P status, respectively. |
| first_indexed | 2024-12-11T17:31:13Z |
| format | Article |
| id | doaj.art-29648ab64a254c54bd34fd05fca3b5c9 |
| institution | Directory Open Access Journal |
| issn | 0852-257X 2086-6682 |
| language | English |
| last_indexed | 2024-12-11T17:31:13Z |
| publishDate | 2013-03-01 |
| publisher | University of Lampung |
| record_format | Article |
| series | Journal of Tropical Soils |
| spelling | doaj.art-29648ab64a254c54bd34fd05fca3b5c92022-12-22T00:56:48ZengUniversity of LampungJournal of Tropical Soils0852-257X2086-66822013-03-0118119Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize YieldNurjayaDedi NursyamsiSource of P fertilizer which is used by farmers in upland acid soils area is generally acidulated phosphate rock (PR),such as tripel super phosphate (TSP), super phosphate 36% P2O5 (SP-36), as well as partial acidulated phosphate rock (PAPR) which contain 10-30% P2O5. Their effectiveness, however, varies and depends on the soil and planttypes. Phosphate rock fertilizers have a high prospects for acid soils because its effectiveness equals to the SP-36,cheaper, slow release, and its application can also leave the residual P in the soil that available for plants for next few seasons. Field experiment aimed to study the effectiveness of direct application of PR at upland acid soils and its effect on soil available-P as well as maize (Zea mays L.) yield was conducted in Acid Inceptisols of Ciampea,Bogorin wet season years 2008/2009. The experiment was arranged by a Randomized Completely Block Design with 3 replications. Maize of P-12 variety was used as a plant indicator. The treatment consisted of 6 levels of phosphate rock: 0, 20, 30, 40, 50, and 60 kg P ha-1, as well as one level of SP-36 40 kg P ha-1 as standard fertilizer. In addition, urea of 300 kg ha-1 and KCl of 100 kg ha-1 were used as basal fertilization. The result showed that the application of PRin the amount ranging from 20 to 60 kg P ha-1 increased total-P and available-P, and pH, decreased exchangeable Al in the soils as well as increased maize straw and grain. Phosphate rock application at 40 kg P ha-1 level was equally effective as SP-36 in the tested soils. Critical level of soil P for maize grown in the soil was 675 and 5.00 mg P2O5 kg-1 extracted with HCl 25% and Bray I, respectively. The requirement of P for maize grown in the soil to achieve maximum profit was 38 kg P ha-1 and 17.5 kg P ha-1 or equivalent to PR of 583 and 268 kg ha-1 in low (soil P < critical level) and high (soil P > critical level) soil P status, respectively.http://journal.unila.ac.id/index.php/tropicalsoil/article/view/559/812Direct applicationphosphate rocksoil available-Pupland acid soils |
| spellingShingle | Nurjaya Dedi Nursyamsi Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield Journal of Tropical Soils Direct application phosphate rock soil available-P upland acid soils |
| title | Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield |
| title_full | Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield |
| title_fullStr | Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield |
| title_full_unstemmed | Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield |
| title_short | Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield |
| title_sort | effectiveness of direct application of phosphate rock in upland acid inceptisols soils on available p and maize yield |
| topic | Direct application phosphate rock soil available-P upland acid soils |
| url | http://journal.unila.ac.id/index.php/tropicalsoil/article/view/559/812 |
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