Agroquímica

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http://repositorio.ufes.br/handle/10/17376
Programa de Pós-Graduação em Agroquímica

Centro: CCENS
Telefone: (28) 3552 8731
URL do programa: http://www.agroquimica.alegre.ufes.br/pos-graduacao/PPGAQ

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Navegando Agroquímica por Autor "Berilli, Savio da Silva"

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    Sacolinhas de tecido não tecido (TNT) e polímero hidroretentor na produção de mudas florestais.
    (Universidade Federal do Espírito Santo, 2022-02-21) Fiorese, Caio Henrique Ungarato; Oliveira, Carlos Henrique Rodrigues de; https://orcid.org/0000-0003-4829-8005; http://lattes.cnpq.br/1293627013882628; https://orcid.org/; http://lattes.cnpq.br/; Goncalves, Elzimar de Oliveira; https://orcid.org/0000000176752493; http://lattes.cnpq.br/4127505406039950; Berilli, Savio da Silva; https://orcid.org/0000-0003-0554-8756; http://lattes.cnpq.br/1703547133505721; Burak, Diego Lang; https://orcid.org/0000000267583517; http://lattes.cnpq.br/2501042964619476
    Studies based on the production of forest seedlings in the midst of alternatives, such as biodegradable bags and water-retaining polymers, are relevant in order to favor the retention of nutrients, favor the plant's attachment in the field, seedling quality and minimize the generation of waste. In this sense, the objective was to study the effect of non-woven fabric bags (TNT) and water-retaining polymer on growth, quality and nutrient assimilation of forest seedlings. The experiment took place in a greenhouse, using the following species: Joannesia princeps Vell. (cutieira) and Samanea tubulosa (Bentham) (seven bark). In the seedling phase, 6 treatments were evaluated: T1 - plastic bag; T2 - plastic bag with gel; T3 - TNT bag without holes; T4 - TNT bag without holes and with gel; T5 - TNT bag with holes; T6 - TNT bags with holes and gel. Periodically, the following were obtained: height, collar diameter and number of leaves. At 100 days after sowing, the following were determined: root, stem and leaf dry biomass, leaf area, Dickson and SPAD quality indices, leaf nutrients and the relationships between them. For the seven husks, at 95 days after sowing, the SPAD index was obtained. At 155 days, the following were determined: SPAD, leaf nutrients and chemical attributes and substrate moisture of T1 and T2. After the production of cutieira seedlings, a simulation of planting in the field was carried out, establishing as the main condition the irrigation only from the wilting of the first leaves. The planting took place in 20-liter plastic pots, with the addition of T7 - ​​a small plastic bag planted with the seedling. The same morphophysiological attributes of the previous step were evaluated. The Randomized Block Design was adopted, with plots of 19 plants (pre-pot phase) and 9 plants (field simulation), with 3 replications. In the statistical analysis, ANOVA analysis of variance was used, at 90% probability, preceded by the Tukey test and orthogonal contrasts. The TNT bag proved to be viable for the production of cutieira seedlings, as it did not harm their growth and quality. The application of the water-retaining polymer for the cutieira in the pre-vase phase had a morphological effect only for the plastic bags. In the simulation of planting in the field, there was no significant effect of the water-retaining polymer on the growth of the cutieira, which makes its application unnecessary. In the same experiment, T7 caused a barrier to root development, while the TNT bag proved to be effective, although it provided a greater imbalance between aerial and root biomass. Regarding the retention of water and nutrients, the water-retaining polymer proved to be unnecessary for the seedlings with seven shells, being the opposite of the TNT bag, which provided the same nutrient absorption as the seedlings in plastic bags. TNT reduced nutrient assimilation for cutieira, probably due to the high porosity of this material. On the other hand, the water-retaining polymer contributed significantly to the retention of nutrients after planting the cutieira. In short, the TNT bag is recommended, but the water-retaining polymer is not recommended for the species worked on.