New technologies and improvement of nursery stock quality
2002
Salas, P. (Mendelova Zemedelska a Lesnicka Univ., Lednice na Morave (Czech Republic). Zahradnicka Fakulta)
This four years experimentation work was aimed at research on using various waste organic materials and especially timber bark in cultivation substrates as a substitute of peat. Sixty-four special isolated cultivation beds were established for this purpose, each of 4.8 m sup(3) volume, in which 11 variants of substrates consisting of different proportions of different components in several replications were tested. Standard substrates Horticultural substrate B and RKS I. were used as controls. The tested trees had different reactions to the different types of substrates depending on their species requirements. The limiting growth factor for Alnus was the content of water in the substrate. Similarly, the content of available nutrients in the substrate was essential for Fraxinus. The hardwood cuttings of Salix not only rooted into the substrate in a few weeks, but also formed above-ground parts of the required sizes. Obtained data on growth parameters differed according to the diversity of requirements of the different studied species.
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