Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm

The mechanism governing the effect of oil palm EFB on yield have not been thoroughly investigated. Against this background, four experiments were set up; one in the laboratory and three in the field, in an attempt to determine the decomposition pattern of EFB, identify the quality factor(s) contr...

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Main Author:	Wirkom, Evelyn Laika
Format:	Thesis
Language:	English English
Published:	1999
Subjects:	Plant nutrients Oil palm
Online Access:	http://psasir.upm.edu.my/id/eprint/10449/1/FP_1999_26_A.pdf
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id	my-upm-ir.10449
record_format	uketd_dc
spelling	my-upm-ir.104492011-04-14T08:40:19Z Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm 1999-09 Wirkom, Evelyn Laika The mechanism governing the effect of oil palm EFB on yield have not been thoroughly investigated. Against this background, four experiments were set up; one in the laboratory and three in the field, in an attempt to determine the decomposition pattern of EFB, identify the quality factor(s) controlling EFB decomposition, determine the effect of EFB application on the leaching of N and uptake of N and K fertilisers. Results from the laboratory experiment indicate that, EFB decomposed in 3 distinct phases: viz. an initial immobilisation phase, a later immobilisation phase of reduced intensity and a final re-mineralisation phase. Stalks generally decomposed faster than the spikelets. In the field experiment, the decomposition rates and patterns of EFB component parts were relatively the same as in the laboratory. EFB-lignin, carbon, polyphenol and nitrogen dynamics were evaluated with time and all four-quality parameters showed a strong correlation with soil N dynamics. However EFB-N had a stronger negative (R2 = -0.95) relation (P=O.OI) with soil N dynamics. Application of EFB parts lead to a complete soil N immobilisation for the entire 36 weeks study while EFB tissue N increased with time. Evaluation of leaching of K, Ca, and Mg from EFB, using two sampling methods viz non-destructive sampling (NDS) and destructive sampling (DS) methods, indicated very high loses of K (87 - 88%), Mg (80 - 86%) and Ca (83 - 88%). For all treatments, K was lost at a much faster rate than Mg and Ca. A comparison of the two sampling methods showed that the NDS method was better as it accounted for higher quantities of nutrients leached. Plant nutrients Chemistry, Inorganic Oil palm 1999-09 Thesis http://psasir.upm.edu.my/id/eprint/10449/ http://psasir.upm.edu.my/id/eprint/10449/1/FP_1999_26_A.pdf application/pdf en public phd doctoral Universiti Putra Malaysia Plant nutrients Chemistry, Inorganic Oil palm Faculty of Agriculture English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Plant nutrients Plant nutrients Oil palm
spellingShingle	Plant nutrients Plant nutrients Oil palm Wirkom, Evelyn Laika Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm
description	The mechanism governing the effect of oil palm EFB on yield have not been thoroughly investigated. Against this background, four experiments were set up; one in the laboratory and three in the field, in an attempt to determine the decomposition pattern of EFB, identify the quality factor(s) controlling EFB decomposition, determine the effect of EFB application on the leaching of N and uptake of N and K fertilisers. Results from the laboratory experiment indicate that, EFB decomposed in 3 distinct phases: viz. an initial immobilisation phase, a later immobilisation phase of reduced intensity and a final re-mineralisation phase. Stalks generally decomposed faster than the spikelets. In the field experiment, the decomposition rates and patterns of EFB component parts were relatively the same as in the laboratory. EFB-lignin, carbon, polyphenol and nitrogen dynamics were evaluated with time and all four-quality parameters showed a strong correlation with soil N dynamics. However EFB-N had a stronger negative (R2 = -0.95) relation (P=O.OI) with soil N dynamics. Application of EFB parts lead to a complete soil N immobilisation for the entire 36 weeks study while EFB tissue N increased with time. Evaluation of leaching of K, Ca, and Mg from EFB, using two sampling methods viz non-destructive sampling (NDS) and destructive sampling (DS) methods, indicated very high loses of K (87 - 88%), Mg (80 - 86%) and Ca (83 - 88%). For all treatments, K was lost at a much faster rate than Mg and Ca. A comparison of the two sampling methods showed that the NDS method was better as it accounted for higher quantities of nutrients leached.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Wirkom, Evelyn Laika
author_facet	Wirkom, Evelyn Laika
author_sort	Wirkom, Evelyn Laika
title	Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm
title_short	Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm
title_full	Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm
title_fullStr	Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm
title_full_unstemmed	Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm
title_sort	management of inorganic input and empty fruit bunches towards efficient nutrient use by young oil palm
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Agriculture
publishDate	1999
url	http://psasir.upm.edu.my/id/eprint/10449/1/FP_1999_26_A.pdf
_version_	1747811124342947840

Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm

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