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Search Results: 1 - 10 of 81175 matches for " Carlos Juliano Brant;Oliveira "
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Germina o e vigor de tanchagem e de melissa
Renata da Silva Brant,Carlos Juliano Brant Albuquerque,Jo?o Almir Oliveira,Carlos Machado Santos
Pesquisa Aplicada & Agrotecnologia , 2010, DOI: 10.5777/450
Abstract: El primer ensayo se realizó para evaluar la mejor sustancia para la germinación de Plantago lanceolata Hook. en una incubadora. Se utilizó remojar las semillas en las siguientes soluciones de ácido giberélico: 0,01% y 0,02% de tiuram a 0,01% y 0.02%, y de nitrato de potasio a 0,2% y 0,4%, con total de siete tratamientos considerando el testimonio y con cuatro repeticiones, en DIC. Estos se pusieron a germinar en la incubadora a una temperatura constante de 20 °C. Hubo lecturas diarias durante 21 días. El peso de 1000 semilla fue 2.085 gramos. El ácido giberélico causó el mayor incremento en IVG hasta 15 días. Los valores más altos de porcentaje de germinación a siete días se registraron en las semillas tratadas con ácido giberélico y a los 21 días no hubo diferencias entre el control, el ácido giberélico (0,01% y 0,02%), el tiuram (0,01%) y nitrato de potasio (0,2%). El segundo experimento tuvo como objetivo evaluar el efecto de la temperatura y GA3 sobre la germinación y el vigor de Melissa officinalis L. Fueran evaluadas cinco temperaturas (15, 20, 25, 30 o C y alterna 20-30 °C) en presencia y ausencia deGA3. Los experimentos se realizaron en “gerbox” en papel blot bosque húmedo. Los recuentos se realizaron durante diez días. Se utilizó DIC en dise o factorial 5x2 con cuatro repeticiones y 50 semillas por tratamiento. No hubo diferencias en las respuestas de IVG y el primer conteo de la germinación de la melissa entre las temperaturas. Posteriormente, la presencia de GA3 aumento lo IVG de las semillas. The first work was executed with the objective to evaluate the better solution in the Plantago lanceolata Hook. germination. The seeds were soaked with gibberelic acid (0.01% and 0.02%), thiourea (0.01% and 0.02%) and potassium nitrate (0.2% and 0.4%), plus a control treatment with 4 repetitions, disposed in CRD. The experiments were conduced on gerbox with a constant temperature of 20oC. The evaluations were done every day until 21 days. The 1,000 seeds weight was 2.085 grams. The gibberellic acid provided the higher increase of GSI until 15 days. The higher values for germination percentage at seven days were verified in seeds soaked with gibberellic acid in two concentrations and at 21 days there were no differences between the best treatments: control, gibberellic acid (0.01% and 0.02%), thiourea (0.01%) and potassium nitrate (0.2%). In the second experiment, the objective was to evaluate the effects of the temperature and GA3 on germination and vigor of Melissa officinalis L. seeds. It was tested five temperatures (15, 20, 25, 30oC and alternate 20-
Diferentes substratos e ambientes para enraizamento de mini-ixora (Ixora coccinea 'Compacta')
Almeida, Elka Fabiana Aparecida;Luz, Petterson Baptista da;Lessa, Marília Andrade;Paiva, Patrícia Duarte de Oliveira;Albuquerque, Carlos Juliano Brant;Oliveira, Marcus Vanner Carvalho de;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000500014
Abstract: the mini-ixora (ixora coccinea 'compacta') is a species highly appreciated for use in tropical gardens. its propagation is made by cutting, however, its rooting percentage is very low so, the aim of this work was to evaluate substrates and environments for the mini-ixora rooting. apical cuttings with 10 cm of length were used in two substrates: sand and plantmax?. three rooting environments were used: wet chamber, greenhouse and conventional rooting (shade cloth with 50% of shade). the experiment was carried out by using split plots with three different environments in the main plot and two substrates in the subplots. one also used five replications and ten cuttings per plot. analyzing the results one hundred days after the experiment implantation one noticed that the sand had proportioned higher percentage of rooting (68%) compared to plantmax (48%). the wet chamber also was the environment that provided better conditions for the propagation of the mini-ixora, with the highest percentage of rooting, 98%, compared to the greenhouse, 66% and to the conventional rooting, 10%. moreover, sand and wet chamber also provided a better root quality. one concluded that the best substrate for mini-ixora propagation was sand and the cuttings should be placed in the wet chamber.
época de semeadura do sorgo forrageiro em duas localidades do estado de Minas Gerais
Carlos Juliano Brant Albuquerque,Marcelo Cruz Mendes
Pesquisa Aplicada & Agrotecnologia , 2011, DOI: 10.5777/1449
Abstract: Objetivou-se com a realiza o deste trabalho avaliar o efeito da época de semeadura de cultivares de sorgo forrageiro em duas localidades do Estado de Minas Gerais na severidade do Colletotrichum graminicola bem como produtividade de matéria seca da forragem. Os experimentos foram conduzidos sob o delineamento experimental de blocos casualizados em esquema fatorial 5 x 5 x 2, com quatro repeti es, sendo cinco cultivares, cinco épocas de semeadura e duas localidades. As primeiras semeaduras foram realizadas no início da segunda quinzena de outubro, a segunda, a terceira, a quarta e a quinta foram aos 15, 30, 45 e 60 dias após a primeira. As cultivares SHS500 e Volumax apresentam maior tolerancia a antracnose independente dos municípios de Francisco Sá, e Jaíba, MG. O atraso na época de semeadura aumenta a severidade da antracnose do sorgo, em fun o da cultivar e local. A produtividade de matéria seca do sorgo forrageiro é afetada pela época de semeadura e municípios de Francisco Sá, MG e Jaíba, MG.
Espa?amento entre fileiras e densidade de semeadura do sorgo forrageiro para a regi?o norte de Minas Gerais
Albuquerque, Carlos Juliano Brant;Pinho, Renzo Garcia Von;Rodrigues, José Avelino Santos;Brant, Renata da Silva;
Ciência e Agrotecnologia , 2011, DOI: 10.1590/S1413-70542011000300009
Abstract: due to its resistance to drought, forage sorghum used as silage, is one of the most common feeds for ruminants on farms in the northern part of the state of minas gerais. the present research evaluated three planting densities and three forms of row spacing to determine their efficiency in the production of mass under the semiarid climatic conditions. two experiments were conducted in two agricultural years. in each year, the experiments were conducted in contiguous areas using row spacing of 50, 70 and 90 cm and three different plant densities. each experiment used a random blocks design in a 4 x 3 factorial scheme with three replicates, four cultivars and three sowing densities. the viability of reducing the space between rows was found to be dependent on the characteristics of each cultivar as well as the climatic conditions. increasing sowing density resulted in a proportional reduction in the production of dry matter.
Dry matter composition of the sorghum forage in different arranging of plants in semiarid of the Minas Gerais state
Carlos Juliano Brant Albuquerque,Renzo Garcia Von Pinho,Renata da Silva Brant,Marcelo Cruz Mendes
Pesquisa Aplicada & Agrotecnologia , 2010, DOI: 10.5777/545
Abstract: El trabajo se realizó durante las temporadas de cultivo 2006/07 y 2007/08 en la región norte de Minas Gerais, con el objetivo de evaluar tres densidades de siembra y distancia entre hileras de sorgo en las condiciones climáticas semi-áridas. Cada a o los ensayos se realizaron en áreas adyacentes, con la adopción, respectivamente, de las distancias entre surcos de 50 cm, 70 cm y 90 cm. Para cada experimento, se evaluaron tres densidad de siembras – 100 mil, 140 mil y 180 mil plantas ha-1, y cuatro cultivares de sorgo. Cada experimento se realizó bajo un dise o de bloques al azar en factorial 4x3 con tres repeticiones, con cuatro cultivares y tres densidad de siembra. Los datos fueron sometidos inicialmente a análisis de varianza individual. Más tarde, se realizó la análisis de varianza conjunta con la participación de los tres experimentos en cada a o y al mismo tiempo teniendo en cuenta todos los otros experimentos. La reducción de la distancia entre líneas y aumento de la densidad de plantas proporcionan una mayor altura de la planta. El aumento de la densidad de siembra el lo espaciamiento entre 50 y 70 cm provocó reducción de la verticalidad de las plantas. Los cambios en los componentes estructurales de los cultivares de sorgo están influenciadas por las condiciones climáticas que prevalecen en el a o agrícola. Porcentaje de tallos, hojas y panículas en la materia seca se ven afectados por cultivar, el espaciamiento y densidad utilizado.< /p> The work was performed during 2006/07 and 2007/08 agricultural years on North of Minas Gerais state, Brazil, with the objective of evaluate three plant densities and three rows spacing of sorghum cultivars in semiarid climatic conditions. In each year it was made experiments on contiguous area, using the row spacing of 50 cm, 70 cm and 90 cm. For each experiment it was evaluated three sowing densities - 100 thousand, 140 thousand and 180 thousand plants ha-1 – plus sorghum cultivars. The experiments were conducted in completely randomized block design in factorial 4x3, with three replications, with four cultivars and three sowing density. Initially it was made analysis of variance with the data obtained. After, it was made a joint analysis of variance with three experiments in each year and other considering all data obtained in experiments. The row spacing reduction and the sowing density increase propitiates higher plants height. The increase of the density in the 50 and 70 cm row spacing provides higher lodging. The alterations in the structural components of sorghum cultivars are influenced by the prevalent
Reduced spacing for Sorghum bicolor in the irrigated and rainfed systems
Carlos Juliano Brant Albuquerque,Gilson Ribeiro da Rocha,Renata da Silva Brant,Marcelo Cruz Mendes
Pesquisa Aplicada & Agrotecnologia , 2010, DOI: 10.5777/878
Abstract: La restricción hídrica en el norte de Minas Gerais ha posibilitado que el sorgo (Sorghum bicolor L.) se presente como una buena opción para la región. Esta cultura tolera mejor las altas temperaturas y déficit de água en comparación con la mayoría de los demás cereales. Debido a la importancia del cultivo de sorgo en la región, el objetivo de este trabajo fue determinar el mejor arreglo espacial de las plantas de sorgo en régimen de regadío y de secano. Se realizaron dos experimentos en áreas adyacentes, siendo uno de riego y otro secano. En cada experimento se utilizaron las densidades de 100, 150, 200 y 250 000 plantas ha-1, y el espacio entre las líneas 25, 50 y 75 cm. Los experimentos se realizaron en el dise o experimental de bloques al azar en esquema factorial 4 x 3 con cuatro repeticiones, siendo cuatro densidades y tres espaciamientos de plantas. Los datos se sometieron inicialmente a un análisis individual de la varianza. Posteriormente, se realizó la análisis de la varianza conjunta con la participación de los dos experimentos. La reducción del espaciamiento entre hileras promueve el aumento de rendimiento de grano, independientemente de la población de plantas elegida. El sorgo granadero cultivado bajo riego se ha incrementado la productividad al reducir el espaciamiento, sin embargo, el aumento de la población de plantas en cultivos de regadío ofrece aumentos en la productividad hasta un punto máximo, disminuyendo de este punto. The water stress in the North of Minas Gerais enabled sorghum (Sorghum bicolor L.) to arise as a good option for the region. This culture tolerates better the high temperatures and water deficit when compared to most of the other cereals. Due to the importance of the sorghum crop in that region, the aim of this work was to determine the best arrangement of plants in the sorghum under irrigated and rainfed system. Two experiments were conducted in adjacent areas with an irrigated and rainfed system. In each experiment, it was used the densities of 100, 150, 200 and 250 thousand plants ha-1, and the spacing of 25, 50 and 75 cm. Each experiment was conducted under a randomized block design, in a 4 x 3 factorial design with four replications, with four densities and three spacing. The data were initially submitted to an analysis of variance. This was followed by an analysis of variance involving the two experiments. The reduction of spacing between rows promotes increases in grain yield, regardless of plant population adopted. Sorghum grown under irrigation has increased productivity by reducing the spacing, however, the
Agronomic and Energetic Potential of Biomass Sorghum Genotypes  [PDF]
Fernanda Maria Rodrigues Castro, Adriano Teodoro Bruzi, José Airton Rodrigues Nunes, Rafael Augusto Costa Parrella, Gabrielle Maria Romeiro Lombardi, Carlos Juliano Brant Albuquerque, Maurício Lopes
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.611187
Abstract: The biomass sorghum [Sorghum bicolor (L.) Moench], is an interesting crop considering the necessity to invest in alternative sources to generate renewable energy. The objective of this experiment was to identify sorghum biomass genotypes with greatest agronomic and energetic potential, and verify if there is phenotypic association between agronomic and technological properties in the hybrids. The study was conducted in three cities of the Minas Gerais State, Brazil (Lavras, Uberlandia and Sete Lagoas). It was evaluated 16 genotypes of sorghum biomass, being 14 of them sensitive hybrids to photoperiod and two cultivars, as control, insensitive to photoperiod. The experimental design was a triple lattice 4 × 4, with plots formed by four linear rows of 5.0 m. The morphoagronomic characteristics evaluated for the three environments were: days to flowering (FLOW), plant height (PH), number of stems (NS) and green matter production (GMP). In the experiment conducted in Lavras, also it was evaluated the agronomic traits: stem diameter (SD) and dry matter production (DMP) besides the technological traits: higher heating value (HHV), crude fiber (CF), neutral detergent fiber (NDF) and acid detergent fiber (ADF). The genotype × environment interaction was significant for all traits. The hybrids had superior performance compared to the control genotypes. Biomass sorghum hybrids, sensitive to photoperiod, when compared with commercial hybrids of forage sorghum, insensitive to photoperiod, had an average production of 34 t ha-1 dry matter with 62% humidity and higher heating value of 4.400 Kcal/Kg. There was no phenotypic correlation between agronomic and technological characters evaluated.
Initial Growth of Eucalyptus with Different Spatial Arrangements in Agrosilvopastoral Systems  [PDF]
Marina Alves Clemente, Marcos Vieira de Faria, Regina Maria Quintão Lana, Jose Geraldo Mageste, Carlos Juliano Brant Albuquerque
American Journal of Plant Sciences (AJPS) , 2017, DOI: 10.4236/ajps.2017.86086
Abstract: Success of integrating livestock farming with forestry systems or SAF′s (Agroforestry Systems) highly depends on correct chose of the tree component and the best spatial arrangement of plants, for which eucalyptus has proven as an excellent option. Therefore, the objective of this study was to evaluate eucalyptus wood yield under different spatial arrangements in agrosilvipastoral system. The arrangements were: single rows 10 × 2 m, double rows (2 × 3) + 15 m and (2 × 3) + 20 m and triple rows (3 × 2 × 3) +20 m. Silvicultural evaluations (DBH, tree height, tree volume and volume per hectare) were done eighteen months after experiment installation. The experimental design was randomized blocks with six repetitions and two trees per plot. Trees were arbitrarily identified in each spatial arrangement, numbered from 1 to 5, totaling 30 plots in each system. The DBH increased as the alleys became closer to each other, being higher in the10 × 2 m and (2 × 3) + 15 m systems; tree height increased in denser spacing—10 × 2 m, (2 × 3) + 15 m and (3 × 2 × 3) + 20 m; the volume of wood per plant and per hectare showed higher values in the 10 × 2 m and (2 × 3) + 15 m systems. The lowest yield was found in the system with the least amount of trees, i.e. (2 × 3) + 20 m (576 trees/ha).
Espa?amento e densidade de semeadura para cultivares de sorgo granífero no semiárido
Albuquerque, Carlos Juliano Brant;Pinho, Renzo Garcia Von;Rodrigues, José Avelino Santos;Brant, Renata da Silva;Mendes, Marcelo Cruz;
Bragantia , 2011, DOI: 10.1590/S0006-87052011000200005
Abstract: there is little information about sorghum management in semiarid areas. therefore, three row spacing and three sowing densities of sorghum grain cultivars were evaluated during two crop seasons, in the north of minas gerais state, brazil. in each season, two experiments were carried out on contiguous areas, adopting 50 cm, 70 cm and 90 cm as row spacing in the first one and three sowing densities (100000, 140000, 180000 plants ha-1) in the second one. in both experiments, four cultivars were evaluated: shs400, 1g220, brs310 and 0992045. the experimental design was in random blocks, in 3 x 4 factorial schemes, with three repetitions. reduction in row spacing promotes increases in grain and panicles productivity of grain sorghum. the viability of increasing sowing density depends on cultivar and row spacing and of climatic conditions prevailing in cropping year. the brs310 and 1g220 cultivars are promising for grain production in the north of minas gerais state.
Produ??o de biomassa e teor do óleo essencial de cidr?o em fun??o da aduba??o organica
Brant, Renata da S;Pinto, José Eduardo BP;Bertolucci, Suzan KV;Albuquerque, Carlos Juliano B;
Horticultura Brasileira , 2010, DOI: 10.1590/S0102-05362010000100021
Abstract: this work evaluated the influence of organic manure in biomass production and in essential oil content of aloysia triphylla (l'hérit) britton. plants growing under greenhouse received five tanned cattle manure rates: 0, 3, 6, 9 and 12 kg m-2 with four pots per replication, in randomized complete design. after 198 days of growth, plants were dried and the essential oil was extracted from leaves by the clevenger's modified apparatus. the highest biomass was presented by plants cultivated with 12 kg m-2 and the highest oil yield was obtained from a. triphylla treated with 9 kg m-2 of cattle manure.
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