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With the implementation of the mini-cutting technique in Eucalyptus, several alternatives have emerged to improve structures for plant propagation, growth, and development. A technology recently applied in the propagation of eucalyptus in clonal mini-gardens is the mini-tunnel, which has shown promise in increasing mini-stump productivity and the rooting of mini-cuttings. The aim of this study was to evaluate the effect of exposure times for mini-stumps to mini-tunnel on the productivity of mini-cuttings from a hybrid clone of Eucalyptus urophylla x Eucalyptus pellita. Four exposure times were tested: 0 days (control), 15, 30, and 45 days. The total productivity and effective productivity of mini-cuttings per mini-stump were evaluated, as well as the levels of chlorophyll a, b, and total chlorophyll, height, leaf area, and dry mass of the mini-cuttings. The results showed that a 45-day exposure period of mini-stumps to the mini-tunnel resulted in increased mini-cutting productivity, greater height, higher chlorophyll content, smaller leaf area, and reduced dry biomass of the mini-cuttings. These findings offer advantages for managing clonal mini-gardens. [ABSTRACT FROM AUTHOR]

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Copyright of Ciência Florestal (01039954) is the property of Ciencia Florestal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)