Influence of Slow-Release Fertilisers on Growth of Rubber (Hevea Brasiliensis) Seedlings

Rubber, Hevea brasiliensis, is a valuable crop of some countries in Asia. In the rubber industry, fertiliser application is one of the most effective methods to enhance growth of rubber seedlings in the nursery. However, application of chemical fertilisers has several disadvantages such as fast...

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Main Author:	Tong, Viet Thinh
Format:	Thesis
Language:	English English
Published:	1997
Subjects:	Slow release fertilizers Rubber plants Hevea
Online Access:	http://psasir.upm.edu.my/id/eprint/10408/1/FP_1997_16_A.pdf
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id	my-upm-ir.10408
record_format	uketd_dc
spelling	my-upm-ir.104082011-09-12T06:59:24Z Influence of Slow-Release Fertilisers on Growth of Rubber (Hevea Brasiliensis) Seedlings 1997 Tong, Viet Thinh Rubber, Hevea brasiliensis, is a valuable crop of some countries in Asia. In the rubber industry, fertiliser application is one of the most effective methods to enhance growth of rubber seedlings in the nursery. However, application of chemical fertilisers has several disadvantages such as fast nutrient leaching, fertiliser bum and requirement of intensive labour for split applications. In recent years, slow-release fertilisers have been introduced to solve the above problem so n many crops including rubber. Studies on the effect of slow-release fertilisers on rubber are limited and there has been no work reported on the use of isotope technique to accurately study nutrient uptake and efficiency of fertilisers use. This study was set up with the aim of studying the rate of nutrient release of slow-release fertilisers and their effect on the performance of rubber seedlings using 15N isotope dilution technique. Two experiments, namely, laboratory incubation and glass-house experiments were conducted. Five fertilisers were evaluated, four of which were slow-release fertilisers (Agroblen, Best Tab, Kokei Nugget and Nurseryace) and one conventional chemical fertiliser (Nitrophoska Yellow). In the soil-incubation experiment, Bungor and Sungai Buloh series soils were used, while in the glass-house experiment, only Bungor series soil was used Results from the incubation experiment showed that during the period of incubation, Nitrophoska Yellow gave the fastest rate of fertiliser decomposition and NPK release, while Nurseryace were persistently the lowest. Higher fertiliser decomposition and release of N and K were obtained in Bungor series soil as compared to Sungai Buloh series soil. However phosphorus release in Bungor series soil was lower than that in Sungai Buloh series soil. It was found that there was a very close relationship between fertiliser decomposition and NPK release of slow-release fertilisers, particularly for Kokei Nugget and Nitrophoska Yellow. Slow release fertilizers Rubber plants Hevea 1997 Thesis http://psasir.upm.edu.my/id/eprint/10408/ http://psasir.upm.edu.my/id/eprint/10408/1/FP_1997_16_A.pdf application/pdf en public masters Universiti Putra Malaysia Slow release fertilizers Rubber plants Hevea Faculty of Agriculture English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Slow release fertilizers Rubber plants Hevea
spellingShingle	Slow release fertilizers Rubber plants Hevea Tong, Viet Thinh Influence of Slow-Release Fertilisers on Growth of Rubber (Hevea Brasiliensis) Seedlings
description	Rubber, Hevea brasiliensis, is a valuable crop of some countries in Asia. In the rubber industry, fertiliser application is one of the most effective methods to enhance growth of rubber seedlings in the nursery. However, application of chemical fertilisers has several disadvantages such as fast nutrient leaching, fertiliser bum and requirement of intensive labour for split applications. In recent years, slow-release fertilisers have been introduced to solve the above problem so n many crops including rubber. Studies on the effect of slow-release fertilisers on rubber are limited and there has been no work reported on the use of isotope technique to accurately study nutrient uptake and efficiency of fertilisers use. This study was set up with the aim of studying the rate of nutrient release of slow-release fertilisers and their effect on the performance of rubber seedlings using 15N isotope dilution technique. Two experiments, namely, laboratory incubation and glass-house experiments were conducted. Five fertilisers were evaluated, four of which were slow-release fertilisers (Agroblen, Best Tab, Kokei Nugget and Nurseryace) and one conventional chemical fertiliser (Nitrophoska Yellow). In the soil-incubation experiment, Bungor and Sungai Buloh series soils were used, while in the glass-house experiment, only Bungor series soil was used Results from the incubation experiment showed that during the period of incubation, Nitrophoska Yellow gave the fastest rate of fertiliser decomposition and NPK release, while Nurseryace were persistently the lowest. Higher fertiliser decomposition and release of N and K were obtained in Bungor series soil as compared to Sungai Buloh series soil. However phosphorus release in Bungor series soil was lower than that in Sungai Buloh series soil. It was found that there was a very close relationship between fertiliser decomposition and NPK release of slow-release fertilisers, particularly for Kokei Nugget and Nitrophoska Yellow.
format	Thesis
qualification_level	Master's degree
author	Tong, Viet Thinh
author_facet	Tong, Viet Thinh
author_sort	Tong, Viet Thinh
title	Influence of Slow-Release Fertilisers on Growth of Rubber (Hevea Brasiliensis) Seedlings
title_short	Influence of Slow-Release Fertilisers on Growth of Rubber (Hevea Brasiliensis) Seedlings
title_full	Influence of Slow-Release Fertilisers on Growth of Rubber (Hevea Brasiliensis) Seedlings
title_fullStr	Influence of Slow-Release Fertilisers on Growth of Rubber (Hevea Brasiliensis) Seedlings
title_full_unstemmed	Influence of Slow-Release Fertilisers on Growth of Rubber (Hevea Brasiliensis) Seedlings
title_sort	influence of slow-release fertilisers on growth of rubber (hevea brasiliensis) seedlings
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Agriculture
publishDate	1997
url	http://psasir.upm.edu.my/id/eprint/10408/1/FP_1997_16_A.pdf
_version_	1747811115011670016

Influence of Slow-Release Fertilisers on Growth of Rubber (Hevea Brasiliensis) Seedlings

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