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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Bioss?lido de lodo de esgoto na restaura??o florestal: produ??o de mudas e aduba??o de plantio / Sewage sludge biosolids in forest restoration: seedlings production and planting fertilization

Cabreira, Gerhard Valkinir 17 February 2017 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2018-08-16T14:12:02Z No. of bitstreams: 1 2017 - Gerhard Valkinir Cabreira.pdf: 1076645 bytes, checksum: 61bdbca123cd46ef5ee16794ef55fd17 (MD5) / Made available in DSpace on 2018-08-16T14:12:02Z (GMT). No. of bitstreams: 1 2017 - Gerhard Valkinir Cabreira.pdf: 1076645 bytes, checksum: 61bdbca123cd46ef5ee16794ef55fd17 (MD5) Previous issue date: 2017-02-17 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / One of the ways to promote forest restoration is through the planting of shrub and tree species for the formation of forest stands. For this, it is necessary to obtain quality seedlings, as it will provide greater capacity to withstand the adverse conditions found in the field; and this quality is closely related to the choice of container type and substrate. Among the products with potential of use as substrate for the production of the forest seedlings is the stabilized sewage sludge (biosolid). A solid waste from Sewage Treatment Plants, rich in organic matter and nutrients, which allows an increase in nursery production, cost reduction and an adequate form of solid waste recycling. In this context, the first part of this study had the objective of evaluating the growth of seedlings of three forest species produced in tubes of 110 and 280 cm3, with increasing doses of controlled release fertilizer applied to biosolids as substrate base. Also, the survival and initial growth of these seedlings after planting were evaluated. In this analysis, the results showed that the seedlings of the three species responded positively to the addition of controlled release fertilizer to the biosolids. Field planting showed good survival and seedling growth, indicating that it was better to produce seedlings of the three species in 280 cm3 tubes with 3 kg of controlled release fertilizer N-P-K (15-09-12) per m3 of biosolids, applied at the time of filling of the tubes. From the results of the biosolids in the nursery, the objective was to evaluate the use of biosolids as fertilizer in field conditions, comparing them to the use of mineral fertilization, using two forest species with controlled growth and response. In the first months after planting, there was basically no significant difference between the use of biosolids and mineral fertilization / Uma das maneiras de impulsionar a restaura??o florestal ? com o plantio de esp?cies arbustivas e arb?reas para a forma??o dos povoamentos florestais. Para isso, faz-se necess?rio a obten??o de mudas de qualidade, pois ir? proporcionar maior capacidade de resistirem ?s condi??es adversas encontradas no campo; e essa qualidade est? intimamente relacionada ? escolha do tipo de recipiente e do substrato. Dentre os produtos com potencial de uso como substrato para produ??o das mudas florestais tem-se o lodo de esgoto estabilizado (bioss?lido). Um res?duo s?lido oriundo das Esta??es de Tratamento de Esgoto (ETEs), rico em mat?ria org?nica e nutrientes e que possibilita aumento na produ??o dos viveiros, diminui??o de custos, al?m de constituir uma forma adequada de reciclagem de res?duos s?lidos. Nesse contexto, a primeira parte desse estudo teve por objetivo avaliar o crescimento de mudas de tr?s esp?cies florestais produzidas em tubetes de 110 e de 280 cm3, com doses crescentes de fertilizante de libera??o controlada N-P-K (15-09-12) aplicados ao bioss?lido como substrato base. Tamb?m, foi avaliado a sobreviv?ncia e crescimento inicial destas mudas ap?s plantio. Nessa an?lise, os resultados mostraram que as mudas das tr?s esp?cies responderam positivamente ao acr?scimo de fertilizante de libera??o controlada junto ao bioss?lido. O plantio em campo apresentou boa sobreviv?ncia e crescimento das mudas, indicando ser melhor produzir mudas das tr?s esp?cies, em tubetes de 280 cm3 com 3 kg de fetilizante de libera??o controla N-P-K (15-09-12) por m3 de bioss?lido, aplicados na ?poca de enchimento dos tubetes. A partir dos resultados que o bioss?lido apresentava no viveiro, buscou-se avaliar o uso do bioss?lido como aduba??o de plantio em condi??es de campo, comparando ao uso de fertiliza??o mineral, utilizando duas esp?cies florestais de crescimento e resposta controlada. Nos primeiros meses ap?s o plantio, basicamente n?o houve diferen?a significativa entre o uso de bioss?lido e fertiliza??o mineral

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