Growth and mineral nutrition of Aquilaria Malaccensis (Karas) in two habitats as affected by different cultural practices

Abstract

ABSTRACT

Effects of cultural practice under different habitats, of well-managed monoculture plantation and growing wild under rubber trees, were studied in Aquilaria malaccensis (Karas) leaves. This study was carried out on Karas growing in these two habitats each from Lipis, Pahang and Sepang, Selangor areas in Malaysia; under the control and induced treatments. The parameters studied include wet and dry weight of 50 matured leaves, iron and zinc elemental contents in leaf, iron and zinc uptakes from soil, and leaf and soil moisture contents. Iron and zinc were analysed in Karas leaves and soil by using Instrumental Neutron Activation Analysis (INAA) technique.

ABSTRAK

Kesan dari kaedah penanaman pada habitat berbeza, iaitu ladang monokultur yang ditadbir selia dengan baik dan tumbuh secara meliar di bawah pokok getah, telah dikaji pada daun Aquilaria malaccensis (Karas). Kajian ini telah dilaksanakan terhadap daun pokok Karas yang hidup dalam dua habitat berbeza di Lipis Pahang dan Sepang, Selangor; di bawah perlakuan kawalan dan induksi. Parameter yang dikaji termasuk berat basah dan kering 50 daun matang, kandungan elemen besi dan zink daun, pengambilan besi dan zink dari tanah, dan juga kandungan air daun dan tanah. Kandungan besi dan zink telah dianalisis dengan menggunakan teknik Analisis Pengaktifan Neutron Instrumentasi (APNI).