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...

Full description

Saved in:
Bibliographic Details
Main Author: Wirkom, Evelyn Laika
Format: Thesis
Language:English
English
Published: 1999
Online Access:http://psasir.upm.edu.my/id/eprint/10449/1/FP_1999_26_A.pdf
http://psasir.upm.edu.my/id/eprint/10449/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.upm.eprints.10449
record_format eprints
spelling my.upm.eprints.104492011-04-14T08:40:19Z http://psasir.upm.edu.my/id/eprint/10449/ Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm 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. 1999-09 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/10449/1/FP_1999_26_A.pdf Wirkom, Evelyn Laika (1999) Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm. PhD thesis, Universiti Putra Malaysia. English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
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
author Wirkom, Evelyn Laika
spellingShingle Wirkom, Evelyn Laika
Management of Inorganic Input and Empty Fruit Bunches Towards Efficient Nutrient Use by Young Oil Palm
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
publishDate 1999
url http://psasir.upm.edu.my/id/eprint/10449/1/FP_1999_26_A.pdf
http://psasir.upm.edu.my/id/eprint/10449/
_version_ 1643824607780667392
score 13.211869