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Record number 1209550
Article title The effects of stonewool quality and cultivation system on the development of the thick root syndrome with cucumber plants
Author(s) Verkerke, W. ; Kipp, J.A.
Journal title Acta horticulturae : technical communications of I.S.H.S. / International Society for Horticultural Science
Part(Year)Number 481(1999)
Pages 55 - 61
Notes Ill.; Tab.; Summary; 7 refs
Online May be available online via journal: Acta horticulturae : technical communications of I.S.H.S. / International Society for Horticultural ScienceTransactions / International Society of Horticultural Science
Keyword(s) cucumbers / cucumis sativus / substrates / roots / rockwool
Categories x
Language English
About The effect of the chemical composition of Cultilene stonewool blocks and the block water content during cultivation on the development of the thick root syndrome (TRS) was studied. Different block types examined were standard HR blocks, standard blocks injected with 20 ml binding agent, standard blocks with 50-fold level of wetting agent, and blocks produced at a suboptimal or supra-optimal polymerization temperature. In all block types examined, cultivation on ebb-flow benches and on an experimental cultivation system with a constant low water content in the block did not lead to the development of TRS. In an experimental cultivation system with a constant high water level, curly roots were found in all block types, but no further symptoms of TRS developed. The experiments showed no evidence that the chemical composition of Cultilene stonewool blocks contributed to the development of TRS symptoms. The results confirm earlier data that the water level in the block plays a role in the development of curly roots in cucumber
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