The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.)

Raja Harun, Raja Muhammad and Ismail, Kamariah (1983) The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.). Pertanika, 6 (3). pp. 1-5.

[img] PDF
3279Kb

Abstract

An experiment was conducted to study the effects of different shading regimes: 80, 55, 30 and a percent i.e. full sunlight on the growth of cocoa seedlings during the first five months in the nursery. It was observed that the shading regime for optimal dryweight accumulation was under 80 percent shade during the first three months gradually reducing to 55 percent shade from the fourth month onwards. This interaction between age and shading regime was brought about by changes in net assimilation rates in response to self shading as the plant aged and also to the effects of lead production in response to different light intensities. Totally unshaded condition was detrimental to plant growth. Shading practice has to take into account the balance between capacity for leaf production and optimal capacity for assimilation.

Item Type:Article
Faculty or Institute:Faculty of Agriculture
Publisher:Universiti Putra Malaysia Press
ID Code:2244
Deposited By: Nur Izzati Mohd Zaki
Deposited On:12 Nov 2009 00:57
Last Modified:27 May 2013 06:59

Repository Staff Only: item control page

Document Download Statistics

This item has been downloaded for since 12 Nov 2009 00:57.

View statistics for "The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.)"


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.