Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-07-18T18:46:18Z No. of bitstreams: 1 2015 - Thiago Ouverney Leite.pdf: 2936509 bytes, checksum: 0a40b1e1174dbb571b9a0bf187862eb9 (MD5) / Made available in DSpace on 2017-07-18T18:46:18Z (GMT). No. of bitstreams: 1 2015 - Thiago Ouverney Leite.pdf: 2936509 bytes, checksum: 0a40b1e1174dbb571b9a0bf187862eb9 (MD5) Previous issue date: 2015-05-25 / CAPES / Petrobras / CNPq / FAPERJ / The drill cuttings is a residue of the oil industry produced during the drilling of onshore and offshore wells. Their mineralogical characteristics depend on the geological formation present along the perforation. Upon reaching the surface, it is impregnated with drilling fluid used during the process. The use of this waste in soils has been discussed as it has limitations per se (e.g. high content of Fe, Mn, Zn, Cu) as a consequence of the drilling process (e.g. Ba, Na and hydrocarbons - HTP). The purpose of this study was to investigate the decrease of salinity after the application of gravel with castor cake to the substrate and using the castor bean BRS- 149 cv. Nordestina, as plant indicator, to infer about limitations on the combined use of these wastes. Pots were used (8 dm3) with proportional doses of gravel (control, 5, 15, 30, 45 and 60 Mg ha-1) associated with castor cake (control, 2, 4, 8, 16 and 32 Mg ha-1) in a factorial design with three replications for 97 days after planting (DAP). Improvements were observed in the morphological development of castor bean plants, with the application of 60 Mg ha-1 gravel associated with 16 Mg ha-1 of castor cake. However, the dose of 60 mg ha-1 of gravel caused stress due to accumulation of Na in leaves, the same for the 45 mg h-1 dose. The best ratio of gravel and pie in this respect was of 15 and 32 mg h-1, respectively. After the initial cultivation of castor bean plants, it was found that the application of 30 Mg ha-1 of gravel was sufficiently capable to neutralizing the toxic Al3+; raising the pH to values around 6.5 and thus making the nutrients more avalilable to the crop. Also, there was a marked HTP decomposition (above 92%) from the substrate metabolical microbiological increase, with the pie addition. It was therefore concluded that the use of gravel must follow specific guidelines especially due to salinity, to avoid possible impacts caused to the environmental and the crop (castor bean). / O cascalho de perfura??o ? um res?duo da ind?stria do petr?leo produzido durante a perfura??o de po?os terrestres e mar?timas, cujas caracter?sticas mineral?gicas dependem da forma??o geol?gica presente ao longo da perfura??o. Ao chegar ? superf?cie, se encontra impregnado com fluido de perfura??o utilizado durante o processo. O uso deste res?duo no solo tem sido discutido com frequ?ncia por apresentar limita??es de ordem qu?mica, tanto de origem geol?gica (e.g. Fe, Mn, Zn, Cu) como provenientes do fluido de perfura??o (e.g. Ba, Na e Hidrocarbonetos - HTP). A proposta deste trabalho foi de averiguar a ameniza??o da salinidade ocasionada pela aplica??o de cascalho, adicionando torta de mamona ao substrato e utilizando a mamoneira BRS-149, cv. Nordestina, como planta indicadora, buscando orientar e inferir limita??es no uso conjunto destes res?duos. Foram utilizados vasos com capacidade de 8 dm3, utilizando doses proporcionais de cascalho (controle, 5, 15, 30, 45 e 60 Mg ha-1) associado a doses de torta de mamona (controle, 2, 4, 8, 16 e 32 Mg ha-1) em fatorial com tr?s repeti??es durante 97 dias ap?s plantio (DAP). Foram observadas melhorias no desenvolvimento morfol?gico da mamoneira, com a aplica??o de 60 Mg ha-1 de cascalho associado ? 16 Mg ha-1 de torta de mamona. Contudo, a dose de 60 Mg ha-1 de cascalho causou estresse por apresentar ac?mulo de Na nas folhas, o mesmo com a dose de 45 Mg ha-1, onde a melhor rela??o, de cascalho e torta, neste contexto, foi de 15 e 32 Mg ha-1, respectivamente. No que tange a melhoria do solo ap?s o cultivo inicial de mamona, foi constatado que a aplica??o de 30 Mg ha-1 de cascalho foi suficientemente capaz de neutralizar o Al3+ t?xico, na eleva??o do pH em torno de 6,5, e assim disponibilizando nutrientes para a cultura. Tamb?m verificou-se decomposi??o acentuada de HTP (acima de 92%) proveniente do metabolismo microbiol?gico no substrato, auxiliada pela adi??o de torta. Concluiu-se ent?o que o emprego do cascalho em solo deve seguir orienta??es espec?ficas e ponderadas, no que tange principalmente ? salinidade, para que n?o haja preju?zo ambiental e ? cultura da mamona.