Abstract
ABSTRACT In the absence of knowledge about the procedures for production of seedlings of particular tree species, determining the nursery production period and quality standards are normally priority aspects for studies. As there is no information on the propagation of P. cauliflorum in the literature, the objective of this study was to determine the length of stay in the nursery, the size of the container and the quality standards for the production of seedlings of this species, based on the performance in the nursery and in the field. The work was carried out in two stages. In the first, seedling growth was analyzed in the nursery and in the second stage their performance was analyzed in the field. We tested three container sizes: 55 cm3 (12.5 cm-length x 2.9 cm-internal diameter), 180 cm3 (13.5 cm x 5.2 cm) and 280 cm3 (19.0 cm x 5.2 cm) and different periods of seedling production in tubes (15, 30, 45, 60, 75, 90, 105 and 120 days). It is recommended that P. cauliflorum seedlings be grown in containers of 180 cm3 (13.5 cm x 5.2 cm) and remain in these containers for at least 120 days. The experiment to assess post-planting performance was crucial to obtain conclusive results for the production of P. cauliflorum seedlings.
Highlights
The worldwide concern about changes in the climate and in the dearth of water resources has generated a high demand for seedlings of many tree species
According to Silva et al (2017), in addition to this network being concentrated on the production of species of easier propagation, the number is still restricted in comparison to the great diversity of the flora of this forest
As there is no information on the propagation of P. cauliflorum in the literature, the objective of this work was to determine the length of stay in the nursery, the size of the container and the quality standards for seedling production of this species, based on the performance in the nursery and in the field
Summary
The worldwide concern about changes in the climate and in the dearth of water resources has generated a high demand for seedlings of many tree species. Southeastern Brazil has a marketing network for seedlings from the Atlantic forest with a capacity to serve other regions (SILVA et al, 2017). According to Silva et al (2017), in addition to this network being concentrated on the production of species of easier propagation, the number is still restricted in comparison to the great diversity of the flora of this forest. The recuperation and conservation of forests depend on the generation of knowledge about the production of seedlings of native species. Studies on container types and sizes and substrate composition predominate in the literature. These studies are mostly based on the results obtained just at the nursery stage (CORREIA et al, 2013) and generally consider quality standards of generic seedlings. These studies are mostly based on the results obtained just at the nursery stage (CORREIA et al, 2013) and generally consider quality standards of generic seedlings. Pezzutti and Caldato (2011) argue that the degree of seedling quality must be speciesspecific
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