Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings
Phosphate Rocks (PR) from various geographical locations are being imported into the Malaysian market mainly from Algeria, North Carolina (USA), Tunisia, China etc. PR vary widely in their physical, chemical and mineralogical properties. Consequently, the solubility and agronomic effectiveness o...
| Main Author: | |
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| Format: | Thesis |
| Language: | English English |
| Published: |
1997
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/10401/ http://psasir.upm.edu.my/id/eprint/10401/1/FP_1997_10_A.pdf |
| _version_ | 1848841413634031616 |
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| author | Lubis, Muhammad Edwin Syahputra |
| author_facet | Lubis, Muhammad Edwin Syahputra |
| author_sort | Lubis, Muhammad Edwin Syahputra |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Phosphate Rocks (PR) from various geographical locations are being
imported into the Malaysian market mainly from Algeria, North Carolina
(USA), Tunisia, China etc. PR vary widely in their physical, chemical and
mineralogical properties. Consequently, the solubility and agronomic
effectiveness of PR sources also vary widely. In addition, the agronomic
effectiveness of PR depends on interactions between several factors, particularly
PR material characteristics, soil properties, crop characteristics, and environmental conditions. Hence, There is a need to evaluate the efficacy of
various sources of PR as phosphate source for plant growth. In \tiew of this, a
glasshouse experiment using oil palm seedlings and a laboratory incubation
experiment were used to evaluate the efficacies of these sources of PR The
study was undertaken with the following objectives :
1. to assess the solubility of PR in soil by various solubility tests.
2. to evaluate the dissolution of PR sources in an acid Malaysian soil, using
an incubation experiment
3. to determine the relative agronomic effectiveness of PRs to oil palm
seedlings in glasshouse experiment.
4. to characterize the immediate and residual availability of PR using the E-value
approach. |
| first_indexed | 2025-11-15T07:42:51Z |
| format | Thesis |
| id | upm-10401 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:42:51Z |
| publishDate | 1997 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-104012011-04-07T07:04:31Z http://psasir.upm.edu.my/id/eprint/10401/ Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings Lubis, Muhammad Edwin Syahputra Phosphate Rocks (PR) from various geographical locations are being imported into the Malaysian market mainly from Algeria, North Carolina (USA), Tunisia, China etc. PR vary widely in their physical, chemical and mineralogical properties. Consequently, the solubility and agronomic effectiveness of PR sources also vary widely. In addition, the agronomic effectiveness of PR depends on interactions between several factors, particularly PR material characteristics, soil properties, crop characteristics, and environmental conditions. Hence, There is a need to evaluate the efficacy of various sources of PR as phosphate source for plant growth. In \tiew of this, a glasshouse experiment using oil palm seedlings and a laboratory incubation experiment were used to evaluate the efficacies of these sources of PR The study was undertaken with the following objectives : 1. to assess the solubility of PR in soil by various solubility tests. 2. to evaluate the dissolution of PR sources in an acid Malaysian soil, using an incubation experiment 3. to determine the relative agronomic effectiveness of PRs to oil palm seedlings in glasshouse experiment. 4. to characterize the immediate and residual availability of PR using the E-value approach. 1997 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/10401/1/FP_1997_10_A.pdf Lubis, Muhammad Edwin Syahputra (1997) Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings. Masters thesis, Universiti Putra Malaysia. Oil-palm - Fertilizers - Malaysia Phosphates English |
| spellingShingle | Oil-palm - Fertilizers - Malaysia Phosphates Lubis, Muhammad Edwin Syahputra Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings |
| title | Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings |
| title_full | Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings |
| title_fullStr | Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings |
| title_full_unstemmed | Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings |
| title_short | Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings |
| title_sort | comparative efficacy of various sources and rates of phosphate rocks to oil palm seedlings |
| topic | Oil-palm - Fertilizers - Malaysia Phosphates |
| url | http://psasir.upm.edu.my/id/eprint/10401/ http://psasir.upm.edu.my/id/eprint/10401/1/FP_1997_10_A.pdf |