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Τίτλος: Deployment of Sawdust as Substrate Medium in Hydroponically Grown Lettuce
Συγγραφείς: Christoulaki, Marirena 
Gouma, Sofia 
Manios, Thrassyvoulos 
Tzortzakis, Nikos G. 
Major Field of Science: Agricultural Sciences
Field Category: Other Agricultural Sciences
Λέξεις-κλειδιά: Lactuca sativa;Sawdust;NFT;Organic materials;Perlite;Plant growth;Soilless culture;Lettuce;Yield
Ημερομηνία Έκδοσης: Μαΐ-2014
Πηγή: Journal of Plant Nutrition, 2014, vol. 37, no. 8, pp. 1304-1315
Volume: 37
Issue: 8
Start page: 1304
End page: 1315
Περιοδικό: Journal of Plant Nutrition 
Περίληψη: In this study, lettuce plants were grown in sawdust (Saw) and/or perlite (Per) mixtures (sawdust; Saw:Per 75:25%; Saw:Per 50:50%; Saw:Per 25:75%; Perlite) and in Nutrient Film Technique (NFT), in an unheated greenhouse. Plants grown in NFT were taller with greater leaf area resulting in greater fresh weight. Sawdust addition reduced leaf length, leaf area and as a consequence the fresh weight but not the leaf number. However, leaf dry weight increased as sawdust content increased into the substrate. Leaf chlorophyll reduced but leaf fluoresces increased in perlite and NFT. High sawdust content (75% or 100%) reduced photosynthetic rates and stomatal conductance. Nutrient uptake [potassium (K), sodium (Na), phosphorus (P)] was the greatest in NFT treatment, while perlite and Saw:Per 25:75% increased elemental uptake (up to 74%) comparing with the remaining treatments. Leaf elemental analysis fluctuated among treatments. Thus, low content (i.e. 25%) of sawdust in perlite could improve inorganic substrate media properties.
URI: https://hdl.handle.net/20.500.14279/10562
ISSN: 01904167
DOI: 10.1080/01904167.2014.881870
Rights: © Taylor & Francis
Type: Article
Affiliation: Cyprus University of Technology 
Hellenic Mediterranean University 
Publication Type: Peer Reviewed
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