Journal of Food, Agriculture and Environment




Vol 11, Issue 3&4,2013
Online ISSN: 1459-0263
Print ISSN: 1459-0255


Growth and visual quality of weeping fig in relation to shading conditions 


Author(s):

Domenica Scuderi, Francesco Giuffrida *, Cherubino Leonardi

Recieved Date: 2013-06-22, Accepted Date: 2013-09-10

Abstract:

The aim of this study was to evaluate the growth and visual quality of weeping fig (Ficus benjamina L.) ‘Danielle’ in relation to different shading conditions (reductions of 50, 58, 66, 80 and 86% of the incident irradiation outside of the greenhouse). The increase of shading from 50 to 86% resulted in a reduction of the daily growth rate of approximately 42%; this reduction was proportional in both the shoots and roots. Shading, modifying certain biometric characteristics of the canopy (e.g. internode length, first-order insertion angle on the main stem, leaf number and unit leaf area), affected the visual quality of the plants. In particular the more-shaded plants (86%) exhibited a more open canopy and thus a reduced foliage density (19% compared to the 50% shaded plants). This reduction was mainly related to the modification of the insertion angle of first-ordered branches, which increased from 38.6° to 46.4° as the shading level increased. Additionally, the highest shading level (86%) resulted in a greater unit leaf area that compensated for the reduction of the leaf number (40%) in terms of the total leaf area. Furthermore, the highest shading level positively influenced certain parameters, such as the plant shape (lower height/width ratio) and leaf characteristics (greater unit area, flat stereometry and dark green colour), which are important parameters in determining the visual quality of ornamental foliage plants. Our results showed that the choice of shading level for weeping fig production could consider besides the effects on growth and indoor acclimatisation, also those on plants visual quality responding to defined market requirements

Keywords:

Ficus benjamina L., foliage plants, irradiance, shading nets, plant architecture, foliage density, canopy shape, branch insertion angle, leaf lamina, chlorophyll content


Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Environment
Pages: 1828-1832


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