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| Carvalho,Ailton A. de; Montenegro,Abelardo A. de A.; Silva,Hernande P. da; Lopes,Iug; Morais,José E. F. de; Silva,Thieres G. F. da. |
| ABSTRACT For climate change scenarios, there is a high degree of complexity, with impacts on the future availability of water resources. In this context, studies related to changes in rainfall time series are essential in order to identify environmental vulnerability. The objective of this study was to analyze trends in the rainfall regime, number of rainy days and temperature for stations located at different continentality and altitude conditions in Northeast Brazil. Meteorological data of the Instituto Nacional de Meteorologia were used, being classified according to the location in relation to the continent: coastal strip (14 stations), strip of 150-300 km up to 300 m altitude (14 stations) and above 300 m (five stations), between 400 and 600 km from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Continentality; Rainfall modeling; Climate variability. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000100015 |
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| Carvalho,Ailton A. de; Silva,Thieres G. F. da; Souza,Luciana S. B. de; Moura,Magna S. B. de; Araujo,Gherman G. L. de; Tolêdo,Matheus P. S.. |
| ABSTRACT The present study evaluated soil moisture (θ) in forage cactus plantations under resilience practices such as irrigation, mulching and intercropping with sorghum. The experiment was arranged in a randomized block design with five water availability conditions (0, 8.75, 17.5, 26.25 and 35% of the reference evapotranspiration), and three planting systems: forage cactus exclusive system (PE), forage cactus with mulch (PC) and intercropping between forage cactus and sorghum (PS). Water content was measured until a depth of 0.60 m. Meteorological data were recorded between June 2012 and June 2013. Water content was not affected by different resilience practices and the variation coefficient was low to medium (4.0 to 22.1%). The temporal variation of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mulching; Intercropping; Irrigated forage cactus; Capacitive probe. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000700481 |
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| Carvalho,Ailton A. de; Montenegro,Abelardo A. de A.; Assis,Fred M. V. de; Tabosa,José N.; Cavalcanti,Roberta Q.; Almeida,Thayná A. B.. |
| ABSTRACT Maize crop under rainfed conditions is widely grown in the Brazilian Northeast on community farms for human and animal consumption. The application of mulch could be adopted to enhance rainwater harvesting and soil moisture levels, although such practice is rarely applied in rainfed cultivation. This study aimed to evaluate the spatial variability of maize productivity, based on soil physical attributes and plant growth and yield, under a rainfed regime in the presence and absence of mulch in the Brazilian semi-arid region. The study was conducted from May to September 2016 in Pesqueira - PE (locality of the Semiarid of Pernambuco State, Northeast, Brazil), during which the development and production of maize in experimental plots were evaluated,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rainfed agriculture; Kriging; Coconut powder; Mulching; Cultivar São José. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000100033 |
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