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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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Multivariate analysis of the behavior and physiology of Girolando heifers in pasture AGRIAMBI
Batista,Pedro H. D.; Almeida,Gledson L. P. de; Pandorfi,Héliton; Melo,Airon A. S. de; Moraes,Alex S.; Guiselini,Cristiane.
ABSTRACT The objective of this study was to evaluate the thermal effect on the behavioral and physiological changes of Girolando heifers by means of principal components analysis. The research was conducted in the Agreste region of the state of Pernambuco, Brazil. Three heifers submitted to the continuous grazing system were used. For the determination of the thermal effect on the animals, the variables dry bulb temperature and relative air humidity were recorded, which allowed to determine the temperature and humidity index and the specific enthalpy. The physiological variables monitored were the respiratory rate, rectal temperature and skin temperature. The quantified behavioral indicators were walking, drinking, eating, ruminating and leisure, to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Principal components; Animal thermal comfort; Animal adaptability.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000400303
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