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Title: Methodology to simultaneously optimize the macrocation and the macroanion composition of nutrient solutions, using mixture theory
Authors: De Rijck, G ×
Schrevens, Eddie #
Issue Date: Jan-2001
Publisher: Academic press ltd
Series Title: Journal of agricultural engineering research vol:78 issue:1 pages:89-97
Abstract: To illustrate the use of mixture theory to simultaneously optimize the macrocation and the macroanion composition of a hydroponical nutrient solution, a {3,2;3,2} double lattice design was established in the double mixture factor space (K+, Ca2+, Mg2+,NO3-, H2PO4- and SO42-). Only one response variable was considered: the calcium content of English ryegrass. The macronutrient composition significantly affected the calcium content of the ryegrass. A reduced second-degree double mixture model with 20 instead of 36 parameters was selected to represent the response surface over the experimental region. The macrocation composition had a more pronounced effect on the calcium content of the ryegrass than the macroanion composition. (C) 2001 Silsoe Research Institute.
URI: 
ISSN: 0021-8634
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Division M3-BIORES: Measure, Model & Manage Bioresponses (-)
× corresponding author
# (joint) last author

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