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...

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Bibliographic Details
Main Author:	Lubis, Muhammad Edwin Syahputra
Format:	Thesis
Language:	English English
Published:	1997
Subjects:	Oil-palm - Fertilizers - Malaysia Phosphates
Online Access:	http://psasir.upm.edu.my/id/eprint/10401/1/FP_1997_10_A.pdf
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id	my-upm-ir.10401
record_format	uketd_dc
spelling	my-upm-ir.104012011-04-07T07:04:31Z Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings 1997 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. Oil-palm - Fertilizers - Malaysia Phosphates 1997 Thesis http://psasir.upm.edu.my/id/eprint/10401/ http://psasir.upm.edu.my/id/eprint/10401/1/FP_1997_10_A.pdf application/pdf en public masters Universiti Putra Malaysia Oil-palm - Fertilizers - Malaysia Phosphates Faculty of Agriculture English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Oil-palm - Fertilizers - Malaysia Phosphates
spellingShingle	Oil-palm - Fertilizers - Malaysia Phosphates Lubis, Muhammad Edwin Syahputra Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings
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.
format	Thesis
qualification_level	Master's degree
author	Lubis, Muhammad Edwin Syahputra
author_facet	Lubis, Muhammad Edwin Syahputra
author_sort	Lubis, Muhammad Edwin Syahputra
title	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_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_sort	comparative efficacy of various sources and rates of phosphate rocks to oil palm seedlings
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Agriculture
publishDate	1997
url	http://psasir.upm.edu.my/id/eprint/10401/1/FP_1997_10_A.pdf
_version_	1747811113534226432

Comparative Efficacy of Various Sources and Rates of Phosphate Rocks to Oil Palm Seedlings

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