Nitrogen Fixation and Plant Growth Enhancement by Beneficial Rhizobacteria in Association with Oil Palm Seedlings

Nitrogen fertilizer is the most expensive nutrient input in oil palm production with average total estimated cost amounting to RM 470 million yea(l. Rapid losses of N fertilizer through leaching further increases the cost on palm oil production and. makes the sector less profitable. Recently ther...

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Main Author:	Ahmad Ghazali, Amir Hamzah
Format:	Thesis
Language:	English English
Published:	2001
Subjects:	Nitrogen - Fixation Agriculture Plant growth promoting rhizobacteria
Online Access:	http://psasir.upm.edu.my/id/eprint/10541/1/FP_2001_1.pdf
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id	my-upm-ir.10541
record_format	uketd_dc
spelling	my-upm-ir.105412024-04-15T07:26:01Z Nitrogen Fixation and Plant Growth Enhancement by Beneficial Rhizobacteria in Association with Oil Palm Seedlings 2001-12 Ahmad Ghazali, Amir Hamzah Nitrogen fertilizer is the most expensive nutrient input in oil palm production with average total estimated cost amounting to RM 470 million yea(l. Rapid losses of N fertilizer through leaching further increases the cost on palm oil production and. makes the sector less profitable. Recently there is a new finding about an associated N2 fixing rhizobacteria which could be applied to the oil palm seedling production sector. The beneficial rhizobacteria has been reported to be efficient in N2 fixation and stimulates plant growth, thus could be used as a biofertilizer and bioenhancer, respectively, for various leguminous and non-leguminous crops. Therefore, a series of experiments were carried out to estimate the N2 fixing capacity of the rhizobacteria and to observe the effects of inoculation on growth and development of the associated oil palm seedlings. Results from the initial experiment indicated that Azospirillum could contribute 40% of the total N requirement of oil palm plantlets through N2 fixation process, stimulated total dry matter accumulation and root growth, stimulated uptake and higher concentration of N and K and increased the host photosynthetic rates compared to the control, after 120 days of planting (D120). The subsequent pot experiment (glasshouse experiment, harvested after 130, 260 and 390 days of planting (D130, D260 and D390)) demonstrated the potential of Azospirillum brasilense Sp 7 and locally isolated Bacillus sphaericus UPMB 1 0 and Bacillus subtilis UPMB 13 as a biofertilizer for oil palm seedlings through N2 fixation (25-50% Ndfa Nitrogen - Fixation Agriculture Plant growth promoting rhizobacteria 2001-12 Thesis http://psasir.upm.edu.my/id/eprint/10541/ http://psasir.upm.edu.my/id/eprint/10541/1/FP_2001_1.pdf text en public doctoral Universiti Putra Malaysia Nitrogen - Fixation Agriculture Plant growth promoting rhizobacteria Faculty of Agriculture Shamsuddin, Zulkifli English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Shamsuddin, Zulkifli
topic	Nitrogen - Fixation Agriculture Plant growth promoting rhizobacteria
spellingShingle	Nitrogen - Fixation Agriculture Plant growth promoting rhizobacteria Ahmad Ghazali, Amir Hamzah Nitrogen Fixation and Plant Growth Enhancement by Beneficial Rhizobacteria in Association with Oil Palm Seedlings
description	Nitrogen fertilizer is the most expensive nutrient input in oil palm production with average total estimated cost amounting to RM 470 million yea(l. Rapid losses of N fertilizer through leaching further increases the cost on palm oil production and. makes the sector less profitable. Recently there is a new finding about an associated N2 fixing rhizobacteria which could be applied to the oil palm seedling production sector. The beneficial rhizobacteria has been reported to be efficient in N2 fixation and stimulates plant growth, thus could be used as a biofertilizer and bioenhancer, respectively, for various leguminous and non-leguminous crops. Therefore, a series of experiments were carried out to estimate the N2 fixing capacity of the rhizobacteria and to observe the effects of inoculation on growth and development of the associated oil palm seedlings. Results from the initial experiment indicated that Azospirillum could contribute 40% of the total N requirement of oil palm plantlets through N2 fixation process, stimulated total dry matter accumulation and root growth, stimulated uptake and higher concentration of N and K and increased the host photosynthetic rates compared to the control, after 120 days of planting (D120). The subsequent pot experiment (glasshouse experiment, harvested after 130, 260 and 390 days of planting (D130, D260 and D390)) demonstrated the potential of Azospirillum brasilense Sp 7 and locally isolated Bacillus sphaericus UPMB 1 0 and Bacillus subtilis UPMB 13 as a biofertilizer for oil palm seedlings through N2 fixation (25-50% Ndfa
format	Thesis
qualification_level	Doctorate
author	Ahmad Ghazali, Amir Hamzah
author_facet	Ahmad Ghazali, Amir Hamzah
author_sort	Ahmad Ghazali, Amir Hamzah
title	Nitrogen Fixation and Plant Growth Enhancement by Beneficial Rhizobacteria in Association with Oil Palm Seedlings
title_short	Nitrogen Fixation and Plant Growth Enhancement by Beneficial Rhizobacteria in Association with Oil Palm Seedlings
title_full	Nitrogen Fixation and Plant Growth Enhancement by Beneficial Rhizobacteria in Association with Oil Palm Seedlings
title_fullStr	Nitrogen Fixation and Plant Growth Enhancement by Beneficial Rhizobacteria in Association with Oil Palm Seedlings
title_full_unstemmed	Nitrogen Fixation and Plant Growth Enhancement by Beneficial Rhizobacteria in Association with Oil Palm Seedlings
title_sort	nitrogen fixation and plant growth enhancement by beneficial rhizobacteria in association with oil palm seedlings
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Agriculture
publishDate	2001
url	http://psasir.upm.edu.my/id/eprint/10541/1/FP_2001_1.pdf
_version_	1804888564066942976

Nitrogen Fixation and Plant Growth Enhancement by Beneficial Rhizobacteria in Association with Oil Palm Seedlings

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