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EFFECTS OF PHOTOSELECTIVE SHADE NETS ON EARLY GROWTH OF SUGARCANE SEEDLINGS REA
Cordeiro Júnior,José J. F.; Cavalcanti,Sávio D. L.; Souza,Rayanne T. de A.; Batista,Pedro H. D.; Guiselini,Cristiane.
ABSTRACT Sugarcane has a great economic interest in Brazil, so it needs technologies to increase its yield strength, especially for seedling production. This study aimed to ascertain the influence of shading nets on early growth and development of pre-sprouted sugarcane seedlings. An experiment was conducted in a protected environment, in the Rural Federal University of Pernambuco (UFRPE), in Recife-PE, Brazil. The protected environments were covered with anti-UV low-density polyethylene plastic plus: Solpack® red ultranet net, Solpack® white net, Solpack® freshnet net, and without shade net, and five replications each. The experiment was carried out in a completely randomized design, and multivariate principal component analysis (PCA) was used to verify...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Protected environment; Shade nets; Solar radiation; Saccharum officinarum.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000100010
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Growth of pre-sprouted sugarcane seedlings submitted to supplementary lighting AGRIAMBI
Almeida Neto,Luiz A.; Guiselini,Cristiane; Menezes,Dimas; Cordeiro Júnior,José J. F.; Pandorfi,Héliton.
ABSTRACT Brazil is the largest producer and exporter of sugarcane in the world, and the sugar and ethanol sector has invested in the development of new technologies and methods of planting to meet the market demand. Thus, the aim of this study was to evaluate the performance of sugarcane at the acclimation phase and under field conditions, from pre-sprouted seedlings exposed to supplementary lighting, through light-emitting diode, in the period of acclimation in a greenhouse. The experiment was carried out in Carpina, PE, Brazil, from January to September 2017. The experimental plots were composed of pre-sprouted seedlings acclimated in greenhouse, exposed to the supplementary lighting systems, 90% Red + 10% Blue (R:B 90/10), 80% Red + 20% Blue (R:B...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sacharum officinarum; Light-emitting diode; Radiation quality.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300194
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Photo-selective shade nets on the production and quality of sugarcane plantlets AGRIAMBI
Cordeiro Júnior,José J. F.; Pandorfi,Héliton; Barbosa Filho,José A. D.; Moraes,Alex S.; Almeida Neto,Luiz A. de; Guiselini,Cristiane.
ABSTRACT Brazil is the world’s largest producer of sugarcane (Saccharum officinarum L.) and research aimed at propagation has promoted higher quality in production. The objective of this study was to investigate the effect of the variation of micrometeorological elements on the survival and quality of pre-sprouted sugarcane plantlets. The study was carried out in a protected environment (UFRPE). Plantlets of the cultivar RB92579 were obtained by the technique of production of pre-sprouted plantlets. The protected environments were divided into four modules covered with low-density polyethylene plastic + photo-selective shade nets and one module without shade net. Micrometeorological data of global and photosynthetically active solar radiation, air...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Protected environment; Solar radiation spectrum; Saccharum officinarum.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000500366
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SIMULATION OF VENTILATION SYSTEMS IN A PROTECTED ENVIRONMENT USING COMPUTATIONAL FLUID DYNAMICS REA
Silva,Roberto C. da; Cordeiro Júnior,José J. F.; Pandorfi,Héliton; Vigoderis,Ricardo B.; Guiselini,Cristiane.
ABSTRACT Computational simulations of mass and energy flow help in implementing alternative cooling systems in protected environments. The aim of this study was to model and simulate the interaction between external and internal environments of a protected environment by means of computational fluid dynamics (CFD) techniques and validate micrometeorological variables for subsequent comparison between natural and indirect ventilation by ground heat exchangers. At the first phase, the micrometeorological variables global solar radiation (Qg), air temperature (Tair), and air relative humidity (RH) were monitored. The second phase consisted of the numerical modeling of finite volumes, with validation through recorded data, as well as simulation and comparison...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Numerical simulation; Micrometeorology; Protected cultivation; Finite elements.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300414
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Sprouting of pre-sprouted sugarcane seedlings and micrometeorological variables under photo-selective nets AGRIAMBI
Cordeiro Júnior,José J. F.; Guiselini,Cristiane; Pandorfi,Héliton; Moraes,Alex S.; Menezes,Dimas; Almeida Neto,Luiz A. de.
ABSTRACT Sugarcane is a grass species that stands out worldwide in the production of ethanol. Brazil is the world’s largest producer and leader in exports, responsible for more than 50% of the products that are marketed worldwide. The objective of this study was to investigate the effect of photo-selective nets on micrometeorological variables and on sprouting of pre-sprouted sugarcane seedlings. The experiment was carried out in a protected environment at Universidade Federal Rural de Pernambuco - UFRPE, in a completely randomized design. Seedlings of cultivar RB92579 were obtained by the technique of production of pre-sprouted seedlings. The protected environment was divided into four modules corresponding to the treatments: covered with anti-UV...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum officinarum; Protected environment; Shade net; Propagation of seedlings.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000800625
Registros recuperados: 5
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