Navegando por Autor "Silva, Raquel Zanholo da"

Agora exibindo 1 - 1 de 1
  • Imagem de Miniatura
    Dissertação
    Acesso aberto (Open Access)
    Fitorremediação de solos salinizados
    (Universidade Estadual do Norte do Paraná, 2016-11-30) Silva, Raquel Zanholo da; Conte, Ana Maria; Manetti, Fabio Augusto; Conte, Ana Maria; http://lattes.cnpq.br/1406959857364094; Conte, Ana Maria; http://lattes.cnpq.br/1406959857364094; Manetti, Fabio Augusto; http://lattes.cnpq.br/2126891963179008; Sachs, Luís Guilherme; https://orcid.org/0000-0002-9026-483X; http://lattes.cnpq.br/8396109344405837; Lima, Claudinei Paulo de; http://lattes.cnpq.br/8352085023073169; Silva, Francisco Carlos Mainardes da; http://lattes.cnpq.br/9683269855531828
    Soil remediation consists of reducing contaminant concentrations to levels safe for human health and environmental protection, using physical, chemical, or biological methods; phytoremediation employs plants for this purpose. To evaluate soil chemical quality following phytoremediation, two experiments were conducted under protected cultivation at the Professor Eduardo Meneghel Rando Experimental Farm, Luiz Meneghel Campus, State University of Northern Paraná, in Bandeirantes, PR. The experimental design was a randomized complete block in a split‑plot factorial arrangement, with main plots assigned to evaluation times (0, 30, 45, and 60 days after crop emergence) and subplots to treatments. The first experiment was carried out in 12.6 L pots filled with soil collected at two depths (0–20 cm and 20–40 cm) at the USIBAN — Bandeirantes Sugar and Alcohol Plant, in Bandeirantes, PR, and characterised initially for routine soil chemical properties. The experiment comprised six treatments with three replications: T1 — Crotalaria spectabilis; T2 — Mucuna deeringiana; T3 — Pennisetum americanum (L.) Leeke; T4 — Zea mays L.; T5 — Canavalia ensiformis; and T6 — Phaseolus vulgaris L. Soil was sampled destructively from the 0–20 cm and 20–40 cm layers for routine chemical analysis at the start of the experiment and at 30, 45, and 60 days after emergence (DAE). The second experiment used 5 L pots filled with soil collected from a greenhouse crop in Bandeirantes, PR, at 0–20 cm depth, and characterised initially for electrical conductivity and routine chemical properties. The experiment comprised five treatments with four replications: T1 — Raphanus sativus; T2 — Pisum sativum L. ssp. arvense; T3 — Lupinus albus; T4 — Avena sativa; and T5 — uncropped (irrigated control). Soil from the 0–20 cm layer was analysed destructively for electrical conductivity and chemical properties at the start and at 30, 45, and 60 DAE. Data were analysed using SASM‑Agri and ESTAT software according to the split‑plot model; means were compared by Tukey’s test. It was concluded that Pennisetum americanum (L.) Leeke was the most effective treatment for potassium remediation up to 45 DAE in soils salinised by vinasse application. Field pea (Pisum sativum L. ssp. arvense) caused the greatest reduction in phosphorus in the protected‑cultivation soil, with 30 DAE being sufficient to achieve this effect. These findings can help mitigate the negative impacts of soil salinisation in agricultural systems.