Consulta: subjectFacets:"Biomass accumulation"
Registros recuperados: 6
Data/hora: 03/06/2024 11:05:17

Fotosíntesis, crecimiento y aceites esenciales en morfotipos florales de caléndula (Calendula officinalis L.).
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Salomé Abarca, Luis Francisco.
La caléndula (Calendula officinalis) es una especie herbácea originaria de Egipto, que se cree fue introducida a Europa en el siglo XII.  En México es cultivada como una planta medicinal y de ornato, en lugares con clima semiseco y templado. En la zona de los valles centrales de México, Palma observó amplia diversidad fenotípica en una variedad común de caléndula, y eligió seis variantes en la morfología floral de esa población heterogénea, a las cuales denominó de la S1 a la S6. El objetivo de este estudio fue comparar morfotipos florales de caléndula en cuanto a crecimiento, eficiencia fotosintética, y contenido de aceites esenciales, a través de modelaje y cinéticas de crecimiento, cinéticas fotosintéticas, técnicas de extracción para aceites y de...
Palavras-chave: Acumulación de biomasa; Rendimiento floral; Parámetros Fotosintéticos; Aceite esencial; &amp;-Cadineno; Biomass accumulation; Floral yield; Photosynthetic limitation; Essential oil; &amp;-Cadinene; Fisiología Vegetal; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2217

Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Tonini,Helio; Schwengber,Dalton Roberto; Morales,Marina Moura; Magalhães,Ciro Augusto de Souza; Oliveira,Jane Maria Franco de.
Abstract: The objective of this work was to assess the effect of spacing on the growth, biomass allocation, and wood quality for energy purposes of Acacia magium. A randomized complete block design was carried out with three replicates and five treatments consisting of trees planted at different spacings: 2.0x2.0, 2.5x2.5, 3.0x2.0, 3.0x2.5, and 3.0x3.0 m. At 67 months after planting, the following species parameters were evaluated: performance (mortality, diameter growth, height, bark factor, and bark and biomass volume yield) and wood energy quality (basic density, higher-calorific value, ash, fixed carbon, and volatile materials) through the analysis of variance. Plant spacing did not affect volume and biomass production per hectare nor wood quality for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Biomass accumulation; Energy productivity; Forest plantation; Roraima.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000700791

Agronomic and P recovery efficiency of organomineral phosphate fertilizer from poultry litter in sandy and clayey soils
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Sá,Jerusa Maia e; Jantalia,Cláudia Pozzi; Teixeira,Paulo César; Polidoro,José Carlos; Benites,Vinícius de Melo; Araújo,Adelson Paulo.
Abstract: The objective of this work was to evaluate agronomic and P recovery efficiencies of a granulated organomineral phosphate fertilizer (OMF) produced from poultry litter, compared with those of monoammonium phosphate (MAP), in soils with different textures. The experiment followed a 2x2x4+2 factorial arrangement, with two Oxisols (sandy loam and clay loam textures), two sources of P (OMF and MAP), four levels of P (50, 100, 200, and 400 mg kg-1), besides two control treatments without P application. The treatments were evaluated in 10-kg pots filled with soil, during four successive cultivations of corn without replacing the P absorbed by the plants, in order to evaluate the actual and residual effects of the fertilizers. Available P contents in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Biomass accumulation; Phosphate fertilization; P recovery efficiency; Tropical soils.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000900786

Influence of rootstocks and pruning times on yield and on nutrient content and extraction in 'Niagara Rosada' grapevine
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Tecchio,Marco Antonio; Moura,Mara Fernandes; Teixeira,Luiz Antonio Junqueira; Pires,Erasmo José Paioli; Leonel,Sarita.
The objective of this work was to evaluate the influence of rootstocks and pruning times on yield and on nutrient content and extraction by pruned branches and harvested bunches of 'Niagara Rosada' grapevine in subtropical climate. The rootstocks 'IAC 766', 'IAC 572', 'IAC 313', 'IAC 571-6', and '106-8 Mgt' were evaluated. Treatments consisted of a combination between five rootstocks and three pruning times. At pruning, fresh and dry matter mass of branches were evaluated to estimate biomass accumulation. At harvest, yield was estimated by weighing of bunches per plant. Branches and bunches were sampled at pruning and at harvest, respectively, for nutrient content analysis. Nutrient content and dry matter mass of branches and bunches were used to estimate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis labrusca; Vitis vinifera; Biomass accumulation; Mineral nutrition; Yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000500340

Biomass production and grain yield of three sorghum lines difering in drought resistance
Provedor de dados: Phyton: Revista Internacional de Botánica Experimental
Autores: Castro-Nava,S; Ortiz-Cereceres,J; Mendoza-Castillo,M del C; Huerta,AJ.
The aim of this study was to determine the eficiency of drought classification criteria that we previously reported for our grain sorghum genotypes. Two tolerant genotypes of grain sorghum &amp;#091;Sorghum bicolor (L.) Moench&amp;#093; (UAT-124 and UAT-152) and one susceptible (UAT-30) were subjected to drought under greenhouse conditions at either panicle initiation, flag leaf, or flowering. Results showed that the effects of drought depended on when drought stress occurred during development. Biomass of the three sorghum genotypes was significantly reduced at the flag leaf stage (48%) by drought stress, but the greatest reduction occurred in the susceptible genotype UAT-30 (71%). Results showed that biomass accumulation for UAT-124 and UAT-30 was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum bicolor L. Moench; Water stress; Drought; Phenology; Biomass accumulation; Grain yield.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572012000200002

NDVI and meteorological data as indicators of the Pampa biome natural grasslands growth
Provedor de dados: Bragantia
Autores: Fontana,Denise Cybis; Junges,Amanda Heemann; Bremm,Carolina; Schaparini,Laura Pigatto; Mengue,Vagner Paz; Wagner,Ana Paula Luz; Carvalho,Paulo.
ABSTRACT The present study aimed to characterize the dynamics of NDVI and meteorological conditions, relating both to the annual dynamics of biomass accumulation in natural pastures of the Pampa biome as a way of subsidizing growth modeling. Forage accumulation rate data from a long-term experiment, NDVI data from the MODIS images, and meteorological data measured at the surface were used. We verify that the agrometeorological element associated to the accumulation of forage in the natural grasslands is different according to the season, which is typical of the subtropical climate. Winter is the critical season for livestock production due to the lower forage accumulation rate and lower values of NDVI, conditioned by the decrease of solar radiation and air...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass accumulation; ENSO; MODIS; Ground data.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200404