The potential of dielectric measuring techniques for soil characterisation has not been fully explored. This is attributed to the complex and incomplete theory on dielectrics, as well as to the lack of sensors suited for practical applications.The theory on dielectric properties of soils is described, evaluated, and expanded. Colloidal polarisation...
This paper presents results of model calculations on uptake of water and nutrients by a lettuce crop grown in a sand bed. Emphasis is on the effect of salt concentration (osmotic head) on water uptake. This effect was studied using a two-dimensional model of water and nutrient transport in and uptake from a rooting medium. The main conclusion is th...
Dat met de EC de groei van de plant en de kwaliteit van de vruchten kan worden gemanipuleerd, is algemeen bekend. Voor een preciezere sturing met bijvoorbeeld de klimaat- en de substraatcomputer is echter meer inzicht nodig in de effecten van de EC
