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Silva,Thieres George Freire da; Primo,Jorge Torres Araújo; Moura,Magna Soelma Beserra de; Silva,Sérvulo Mercier Siqueira e; Morais,José Edson Florentino de; Pereira,Poliana de Caldas; Souza,Carlos André Alves de. |
Abstract: The objective of this work was to evaluate soil water dynamics in areas cultivated with forage cactus clones and to determine how environmental conditions and crop growth affect evapotranspiration. The study was conducted in the municipality of Serra Talhada, in the state of Pernambuco, Brazil. Crop growth was monitored through changes in the cladode area index (CAI) and through the soil cover fraction, calculated at the end of the cycle. Real evapotranspiration (ET) of the three evaluated clones was obtained as the residual term in the soil water balance method. No difference was observed between soil water balance components, even though the evaluated clones were of different genus and had different CAI increments. Accumulated ET was of 1,173... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nopalea; Opuntia CAM photosynthetic pathway evapotranspiration. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000700515 |
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Barbosa,Marcela Lúcia; Silva,Thieres George Freire da; Zolnier,Sérgio; Silva,Sérvulo Mercier Siqueira e; Ferreira,Williams Pinto Marques. |
ABSTRACT The environmental factors that affect the morphological characteristics of different genera of cacti are little known. The aim of this study therefore was to analyse the contribution of environmental variables to growth in cladodes and plant of forage cactus clones of the genera Nopalea and Opuntia. The data used in this study were obtained from an experiment conducted in Serra Talhada, Pernambuco, Brazil, between 2012 and 2013, where the clones 'IPA Sertânia' (Nopalea), 'Miúda' (Nopalea) and 'Orelha de Elefante Mexicana' (Opuntia) were submitted to different irrigation depths (2.5, 5.0 and 7.5 mm) and fixed irrigation intervals (7, 14 and 28 days). Morphological characteristics of the cladodes and plants and weather variables were obtained over... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Statistical analysis; Nopalea sp; Opuntia sp; Weather variables. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300399 |
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Silva,Thieres George Freire; Primo,Jorge Torres Araújo; Silva,Sérvulo Mercier Siqueira e; Moura,Magna Soelma Beserra de; Santos,Djalma Cordeiro dos; Silva,Maria da Conceição; Araújo,José Eduardo Marques. |
Objetivou-se avaliar a eficiência produtiva de três clones de palma forrageira resistentes à Cochonilha do Carmim, cultivados em condições de sequeiro no Semiárido brasileiro. Os clones avaliados foram IPA-Sertânia (IPA), Miúda (MIU) e Orelha de Elefante Mexicana (OEM). Foram calculados os indicadores de eficiência do uso da água: produtividade da água da cultura (PA C), produtividade econômica da água (PEA) e eficiência do uso de nutrientes (EUN), todos com base na água precipitada (Prec.) e na evapotranspiração real da cultura (ETr). A ETr foi quantificada por meio do método do balanço de água no solo. Verificou-se que não houve diferença estatística entre a PA C em base seca (MS) nos clones avaliados tanto em termos de Prec. como de ETr, mas eles... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Evapotranspiração; Nopalea sp; Opuntia sp; Produtividade econômica da água; Rendimento. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200014 |
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