The Initial and Residual Value of Phosphorus from Apatite Rock Phosphates and Superphosphates as Measured by 32p Dilution Technique
A pot trial using maize (Zea mays, L.) grown on an Ultisollabelled with 32p was carried out to evaluate the agronomic value of nine types of apatite rock phosphates and triple superphosphate. Results show that the effectiveness of tested rock phosphates is variable as compared to superphosphate, w...
| Main Authors: | , |
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| Format: | Article |
| Language: | English English |
| Published: |
1990
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| Online Access: | http://psasir.upm.edu.my/id/eprint/2918/ http://psasir.upm.edu.my/id/eprint/2918/1/The_Initial_and_Residual_Value_of_Phosphorus_from.pdf |
| _version_ | 1848839382692265984 |
|---|---|
| author | Abdul Rahman, Zaharah Abdul Hamid, Sharifuddin |
| author_facet | Abdul Rahman, Zaharah Abdul Hamid, Sharifuddin |
| author_sort | Abdul Rahman, Zaharah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A pot trial using maize (Zea mays, L.) grown on an Ultisollabelled with 32p was carried out to evaluate
the agronomic value of nine types of apatite rock phosphates and triple superphosphate. Results show that
the effectiveness of tested rock phosphates is variable as compared to superphosphate, when measured at 30
days after planting. However, these rock phosphates were three to five times more effective than triple
superphosphate in the second cropping. |
| first_indexed | 2025-11-15T07:10:34Z |
| format | Article |
| id | upm-2918 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:10:34Z |
| publishDate | 1990 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-29182013-05-27T07:04:27Z http://psasir.upm.edu.my/id/eprint/2918/ The Initial and Residual Value of Phosphorus from Apatite Rock Phosphates and Superphosphates as Measured by 32p Dilution Technique Abdul Rahman, Zaharah Abdul Hamid, Sharifuddin A pot trial using maize (Zea mays, L.) grown on an Ultisollabelled with 32p was carried out to evaluate the agronomic value of nine types of apatite rock phosphates and triple superphosphate. Results show that the effectiveness of tested rock phosphates is variable as compared to superphosphate, when measured at 30 days after planting. However, these rock phosphates were three to five times more effective than triple superphosphate in the second cropping. 1990 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/2918/1/The_Initial_and_Residual_Value_of_Phosphorus_from.pdf Abdul Rahman, Zaharah and Abdul Hamid, Sharifuddin (1990) The Initial and Residual Value of Phosphorus from Apatite Rock Phosphates and Superphosphates as Measured by 32p Dilution Technique. Pertanika, 13 (1). pp. 27-31. English |
| spellingShingle | Abdul Rahman, Zaharah Abdul Hamid, Sharifuddin The Initial and Residual Value of Phosphorus from Apatite Rock Phosphates and Superphosphates as Measured by 32p Dilution Technique |
| title | The Initial and Residual Value of Phosphorus from
Apatite Rock Phosphates and Superphosphates as
Measured by 32p Dilution Technique |
| title_full | The Initial and Residual Value of Phosphorus from
Apatite Rock Phosphates and Superphosphates as
Measured by 32p Dilution Technique |
| title_fullStr | The Initial and Residual Value of Phosphorus from
Apatite Rock Phosphates and Superphosphates as
Measured by 32p Dilution Technique |
| title_full_unstemmed | The Initial and Residual Value of Phosphorus from
Apatite Rock Phosphates and Superphosphates as
Measured by 32p Dilution Technique |
| title_short | The Initial and Residual Value of Phosphorus from
Apatite Rock Phosphates and Superphosphates as
Measured by 32p Dilution Technique |
| title_sort | initial and residual value of phosphorus from
apatite rock phosphates and superphosphates as
measured by 32p dilution technique |
| url | http://psasir.upm.edu.my/id/eprint/2918/ http://psasir.upm.edu.my/id/eprint/2918/1/The_Initial_and_Residual_Value_of_Phosphorus_from.pdf |