Name: BIANCA DE BARROS
Publication date: 30/07/2021
Advisor:
Name |
Role |
|---|---|
| FÁBIO RIBEIRO PIRES | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| ADRIANO ALVES FERNANDES | Advisor * |
| FÁBIO RIBEIRO PIRES | Advisor * |
Summary: BARROS, Bianca de; M.Sc.; Federal University of Espirito Santo; July 2021;
Recovery of degraded areas: Substrates for the production of seedlings and
revegetation techniques for well base in restinga ecosystem; Advisor: Fábio
Ribeiro Pires; Co-advisor: Adriano Alves Fernandes, Luis Fernando Tavares de
Menezes.
Degraded area recovery programs have become essential to minimize the
environmental impacts caused by the exploitation of natural resources. In this sense,
it is necessary that new techniques are promoted to create opportunities for the
production of quality seedlings and also to enable the establishment of native
species, in the field, in these disturbed areas. Two experiments were carried out. In
the first, the objective was to evaluate the initial development and quality of cedar
(Cedrela odorata L.) seedlings on different substrates, differentiated by the proportion
of materials used in their composition: soil, commercial substrate, cattle manure and
sand, with addition of slow-release fertilizer, aiming to use them in the revegetation of
degraded areas. The experimental design used was randomized blocks with nine
treatments and four replications. The results indicated that the substrate T0, with
100% soil, is not suitable for the production of seedlings of this species, therefore,
the substrate T5 (60% soil + 20% cattle manure + 20% commercial substrate +
fertilizer) is the most suitable , as it presented higher means in all studied variables.
In the second experiment, the objective was to evaluate the growth of two native
species, guava (Psidium cattleyanum) and ingazinho (Inga laurina), in a restinga
area, in a deactivated oil exploration well base, in the north of the state of Espírito
Santo . The experimental design was randomized blocks - DBC, in a 2x3 factorial
scheme with two substrates (sandy - removing the clayey base, and clayey - keeping
the clayey base and cultivating on it) and three planting techniques: species native
intercropped with bromeliad; native with chemical and organic fertilization in the pit;
and native without fertilization and without bromeliad (control), with five repetitions.
The two species evaluated showed expressive growth in both types of substrate,
being therefore indicated for revegetation in restinga areas. The clayey substrate
showed better results of vegetative growth of the species and higher concentrations
vi
of nutrients Ca, Mg, K, and P. The technique of planting with fertilization was the one
that most contributed to plant growth.
Key words: Native species, soil management, impacted areas
