Articles
PHYSICAL PROPERTIES OF GROWING MEDIA: STATE OF THE ART AND FUTURE CHALLENGES
Article number
819_6
Pages
65 – 72
Language
English
Abstract
The study of the physical properties of growing media is still often based on the analysis of the water retention curve under stationary conditions, making it possible to deduce aeration and plant water availability properties.
In addition to these standardised studies, dynamic properties such as water and gas flows towards the plant in the substrates are also taken into account so as to optimise irrigation management and reduce environmental pollution.
The general long-term aim is to take the evolution of these flow properties into consideration in relation to the evolution of various substrate properties (physical, physico-chemical and biological), and to improve our understanding of the role and impact of these changes on root development.
In addition to these standardised studies, dynamic properties such as water and gas flows towards the plant in the substrates are also taken into account so as to optimise irrigation management and reduce environmental pollution.
The general long-term aim is to take the evolution of these flow properties into consideration in relation to the evolution of various substrate properties (physical, physico-chemical and biological), and to improve our understanding of the role and impact of these changes on root development.
Publication
Authors
J.-C. Michel
Keywords
water retention, hydraulic conductivity, air diffusivity, water repellency, wettability, hysteresis, shrinkage, swelling, root development
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