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| 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 |
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| 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... |
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Palavras-chave: Acumulación de biomasa; Rendimiento floral; Parámetros Fotosintéticos; Aceite esencial; &-Cadineno; Biomass accumulation; Floral yield; Photosynthetic limitation; Essential oil; &-Cadinene; Fisiología Vegetal; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2217 |
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| 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 |
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| 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 |
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| 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 |
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