The ISSA System of Production of Container Tree Seedlings
A new system for producing container seedlings has been developed specifically to produce planting material suitable for degraded soils in semi-arid regions, like most of the afforestation areas in Mediterranean countries. The ISSA system (named for the Istituto Sperimentale per la Selvicoltura, Arezzo) consists of a large-capacity pot (1 liter) and a multipot unit holding 12 pieces. The system was designed to improve the standard quality of nursery stock and to avoid problems of root spiralling typical of seedlings grown in the "phytosack," the most common container in Italian nurseries. Seedlings produced with the ISSA system showed a well-balanced growth ratio (root to aboveground biomass), as well as good structural development of their root systems. The operative use of the ISSA system pointed out the possibilities to improve the mechanization level of present nursery practice. The first results of plantations showed the good development of planted seedlings also in difficult reforestation sites in southern Italy. Tree Planters' Notes 43(4):146-149; 1992.
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Author(s): Emilio Amorini, Gianfranco Fabbio
Publication: Tree Planters' Notes - Volumes 43, Number 4 (1992)
Section: Peer-Reviewed Articles
Volume: 43
Number: 4
