Impacts of sheep grazing on soil properties and growth of rubber (Hevea brasiliensis)

Nik Ab. Majid, Nik Muhamad and Awang, Kamis and Jusoff, Kamaruzaman (1987) Impacts of sheep grazing on soil properties and growth of rubber (Hevea brasiliensis). In: ICRAF/WMO/UNEP Workshop on the Application of Meteorology to Agroforestry Systems Planning and Management, 9-13 February 1987, Nairobi, Kenya.

[img] PDF
Restricted to Repository staff only

1008Kb

Abstract

The agronomic and economic importance of sheep grazing is receiving increased attention in rubber plantations in Malaysia. Measurements of soil physical and chemical properties, foliar and tree girth of rubber (Hevea brasiliensis) in a Rubber Industry Smallholders Development Authority (RISDA) mini-estate at Bukit Mahang, Ketereh in Kelantan showed 15 months of grazing did not cause serious soil compaction to restrict water movement into and through the soil profile especially during intense rainstorms. All measurement of soil physical properties, namely soil moisture content, particle density, bulk density, total pore space, macropores, micropores, saturated hydraulic conductivity, soil temperature, particle-size distribution, loss on ignition and resistance to root penetration indicated an aggradation at the soil surface (0-10 cm depth) due to grazing. However, except for K, the other soil nutrients namely total N,P,Ca and Mg levels and soil pH under grazing were greater in relation to ungrazed area. Foliar analysis showed that N,P,Ca, Mg and Na increased with grazing. Potassium, however, decreased with grazing. Trees under grazing have higher girth increment than ungrazed area. The understanding of these parameters will allow proper agroforestry management practices to be adopted in rubber plantations.

Item Type:Conference or Workshop Item (Paper)
Subject:Rubber industry and trade - Malaysia
Subject:Rubber plantations
Faculty or Institute:Faculty of Forestry
ID Code:17795
Deposited By: kmportal
Deposited On:16 Jul 2011 08:14
Last Modified:22 Sep 2014 07:30

Repository Staff Only: Edit item detail

Document Download Statistics

This item has been downloaded for since 16 Jul 2011 08:14.

View statistics for "Impacts of sheep grazing on soil properties and growth of rubber (Hevea brasiliensis)"


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.