https://ri.ufs.br/jspui/handle/riufs/12 2026-04-04T11:48:34Z https://ri.ufs.br/jspui/handle/riufs/24718 Título: Índice de área foliar de Eucalyptus estimado por índices de vegetação utilizando imagens TM - Landsat 5 Autor(es): Almeida, André Quintão de; Ribeiro, Aristides; Delgado, Rafael Coll; Rody, Yhasmin Paiva; Oliveira, Aline Santana de; Leite, Fernando Palha Abstract: The objective of the present study was to fit regression models to the measured leaf area in eucalyptus forests and vegetation indices derived from Landsat-5 TM images. The study was carried out in commercial plantations located in the basin of the Doce River, Minas Gerais state, between 2008 and 2011. Leaf area was measured in the field, non-destructively, with the LAI-2000 device. The following indices were used: Normalized Difference Vegetation Index (NDVI), Soil Adjusted Vegetation Index (SAVI), and Simple Ratio (SR). The best model was adjusted from the NDVI, with a correlation coefficient of 0.73 and root mean square error of 0.37 m² m–2 (19%). We conclude that the leaf area index can be estimated by the regression models fit to the vegetation indices derived from the Landsat - 5 TM images. 2015-01-01T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/24711 Título: Trocas gasosas e fluorescência da clorofila em plantas de berinjela sob lâminas de irrigação Autor(es): Silva, Flaviana Gonçalves da; Dutra, Wellison Filgueiras; Dutra, Alexson Filgueiras; Oliveira, Izaac M. de; Filgueiras, Luanna Maria Beserra; Melo, Alberto Soares de Abstract: Eggplant has a nutritional, social and economic importance in the world, being grown and marketed in several countries, normally in protected environment. Its production, as a lot of crops, is dependent on factors such as water, light and nutrients. Thus, it was proposed with this study to evaluate leaf gas exchange, chlorophyll fluorescence and leaf temperature in eggplant grown in greenhouse under different irrigations levels. The study was accomplished in a greenhouse, using a completely randomized experimental design with five treatments and eight replications, totaling 40 experimental units. The treatments were consisted of five irrigation depths: 33, 66, 100, 133 and 166% of ETc, which amounted to 133, 266, 403, 536, 669 mm cycle-1, respectively. Photosynthetic rate of eggplant increases with the addition of water depth. The higher values of gas exchange (A, E, gs, Ci, EiUA e EiC) in eggplants, in general, were observed in irrigation, water depths estimated between 123,52 and 166% ETc were used. The chlorophyll fluorescence increased with increasing water depths and leaf temperature decreased with the increase in water depth. 2015-01-01T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/24668 Título: ‘Norine’, a cinnamon-linalool hybrid cultivar of basil Autor(es): Blank, Arie Fitzgerald; Santana, Aléa Dayane Dantas de; Arrigoni-Blank, Maria de Fátima; Andrade, Thiago Matos; Pinto, Jéssika Andreza Oliveira; Nascimento Júnior, Alberto Ferreira de; Luz, José Magno Queiroz 2015-01-01T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/24628 Título: 2,4-dichlorophenoxyacetic acid as an alternative auxin for rooting of vine rootstock cuttings Autor(es): Tofanelli, Mauro Brasil Dias; Freitas, Pytágoras Leal; Pereira, Giuliano Elias Abstract: A viticultura é uma atividade agrícola marcante no semiárido do Nordeste brasileiro, sendo a qualidade e a facilidade de propagação das videiras importante neste contexto. O objetivo deste trabalho foi avaliar o uso do ácido 2,4-Diclorofenoxiacético (2,4-D) como forma alternativa para o ácido indolilbutírico (AIB) no enraizamento de estacas de porta-enxertos de videira. Para isso, foi conduzido um experimento à Universidade Federal de Sergipe (São Cristóvão-SE), de janeiro a março de 2010, com estacas de porta-enxertos ‘IAC-766’, ‘IAC-572’ e ‘Paulsen 1103’ tratadas com 2,4-D e AIB, nas concentrações de 0; 1.000; 2.000 e 3.000 mg L-1, por 5 segundos, e, posteriormente, plantadas em canteiros com areia lavada. Aos 56 dias após o plantio, avaliaram-se as porcentagens de estacas enraizadas, brotadas, com calo e mortas, número médio de raízes e comprimento médio de raízes das estacas enraizadas. Os resultados demonstraram que o 2,4-D não supera o efeito do AIB quanto às características necessárias para o processo de enraizamento das estacas dos porta-enxertos de videira. Os porta-enxertos de videira demonstraram potencial de propagação por estaquia de ramos sem a necessidade de aplicação de auxina. Observou-se que as auxinas em concentrações mais elevadas tornam-se prejudiciais ao enraizamento das estacas. 2014-09-01T00:00:00Z