MORPHOLOGICAL PARAMETERS IN CLONAL SEEDLINGS OF Eucalyptus spp. IN THE EXPEDITION PHASE

Abstract

The seedlings production process of forest plant species is found to be an important stage in the forest-based production chain. The present work was conducted in commercial nurseries aiming to assess morphological parameters of Eucalyptus clonal seedlings in the expedition phase. The experiment was performed in two nurseries located in the southern part (Nursery #1) and slopes' field (Nursery #2) of the State of Minas Gerais, Brazil. The Completely Randomized Design was used, with four treatments or clones (AEC 144 -Eucalyptus urophylla, AEC 244 -Eucalyptus urophylla, AEC 1528 -hybrid of E. urophylla x Eucalyptus grandis and AEC 100 -hybrid of E. urophylla x E. grandis), seven replications and 16 seedlings per plot. Seedlings were produced in 54 cm 3 tubetes according to nurseries protocols. The following parameters were assessed: plant height, collar diameter, dry matter, and seedlings quality index. The Sisvar statistical analysis system was run for Analysis of Variance, and averages were compared by means of Scott-Knott test at 5% significance. The clone AEC 1528 showed better quality standards at the Nursery #1, and clones AEC 100 and AEC 244 showed greater height and collar diameter at the Nursery #2. Therefore, seedlings from commercial nurseries under study showed adequate morphological quality standards for expedition and planting.

Assessment of the Physical Quality of Eucalyptus pellita Seedlings from Shoot Cutting by Age Level

“…Finnantara Intiga (Finnantara Intiga 2018). Furthermore, the assessment of the physical quality of seedlings also used the sturdiness index, shoot-root ratio, and seedling quality index (SQI), which can reflect the appearance of seedlings in the field (Munguambe 2018;Nurhasybi et al 2019).…”

Fertilization via soil with boric acid in Dipteryx odorata (Aubl.) Willd. seedlings

“…Munguambe et al (2018) stated that height is one of the most important variables measured in plants, as it is possible to select and classify seedlings, besides being a characteristic of easy evaluation Reid et al (2004). mentioned that high soil B concentrations inhibit shoot growth.…”