Abstract
Environmental conservation and regeneration actions must consider plant species that add value by restoring structural and functional aspects of the ecosystem. The forest species, Peltophorum dubium, has several characteristics that make its use viable in projects of restoration of degraded areas, making it necessary to study the species' responses to different cultivation environments. Thus, 500 seeds were selected and sown in vermicompost substrates prepared with different proportions of cattle rumen content (CR) and sugarcane bagasse (SB) (V1 - 60% CR x 40% SB / V2 - 50% CR x 50 % SB / V3 - 40% CR x 60% SB / V4 - 70% CR x 30% SB) and in an commercial substrate (Plantmax®). At 79 days after sowing, 20 seedlings per treatment were removed; they were weighed and measured, resulting in growth, dry matter, and vigor data. The vermicompost substrates were sent to the chemical analysis laboratory to determine their chemical composition. The data were submitted to normality analysis. Analysis of variance was performed for normal data and the Kruskal Wallis test for data that did not show normality. The means or medians were compared using the Tukey test at a 5% probability level. Based on the results related to the growth and vigor of P. dubium seedlings, it is possible to state that the productive potential of the species was higher in the vermicompost substrates.
Highlights
Agricultural and livestock expansion over areas with native forest cover in the Cerrado has historically been associated with environmental degradation and loss of biological diversity (Alho and Martins, 1995; Cunha et al, 2008)
Alternatives for mitigating the impacts resulting from the use and occupation of land imply the adoption of practices supported by the sustainability idea, among which are included the use of organic waste and the production of seedlings of native species for environmental restoration purposes (Cotta et al, 2015; Brancalion et al, 2010)
The results of this study indicate the same pattern for P. dubium plants, with higher results of leaf area (LA) in vermicompost substrates than the commercial substrate
Summary
Agricultural and livestock expansion over areas with native forest cover in the Cerrado has historically been associated with environmental degradation and loss of biological diversity (Alho and Martins, 1995; Cunha et al, 2008). For the success of such actions, it is necessary to know the techniques of production and management of seedlings using species that add value by restoring structural and functional aspects of the ecosystem, which implies the use of good quality inputs and seedlings (Oliveira et al, 2016). The forest species Peltophorum dubium has several characteristics that make its use viable in projects of restoration of degraded areas Among these characteristics is the good production of seeds from their parent plants, rapid growth, and rusticity; the fact that they are heliophytes, which can be found occupying clearings, edges of forests and colonizing pasture areas, make them suitable for use in mixed reforestation projects of degraded areas of permanent preservation (Lorenzi, 1992; Carnevali et al, 2016). For the success of reforestation actions, it is necessary to master production techniques and management of seedlings of native species, which requires knowledge of the responses of different plant species to different cultivation media, since the demands Nutritional factors vary between species
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