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Abstract(s)
Diversos estudos abordam o tema da importância do aumento da eficiência de rega perante um cenário de progressiva escassez de água e uma competição cada vez maior por este recurso, entre a agricultura e o consumo urbano. Baseado no conhecimento atual, foi desenvolvido um sistema integrado de monitorização de rega de plantas em vaso ao ar livre, que utiliza a informação de sensores de humidade do substrato e os dados do clima obtidos numa estação meteorológica, para a determinação da evapotranspiração de Rosmarinus officinalis. Com estes dados, determinou-se uma variável designada por Kch que permite estimar a evapotranspiração das plantas, e consequentemente a necessidade de rega, a partir da evapotranspiração de referência (Eto). Através dos dados obtidos ao longo do ensaio, foi possível perceber qual a percentagem de humidade do substrato que mais beneficiou a absorção de água por parte das plantas.
Several studies address the issue of the importance of increasing irrigation efficiency in a scenario of progressive water scarcity, and increasing competition for this resource, between agriculture and urban consumption. Based on current knowledge, an integrated system for monitoring watering potted plants outdoors has been developed, which uses information from substrate moisture sensors and climate data obtained from weather station to determine the evapotranspiration of Rosmarinus officinalis. With these data, it was determined a variable called Kch that allows estimating the evapotranspiration of the plants, and consequently the need for irrigation, from the reference evapotranspiration (Eto). Through the data obtained throughout the test, it was possible to understand which percentage of moisture in the substrate that most benefited the water absorption by the plants.
Several studies address the issue of the importance of increasing irrigation efficiency in a scenario of progressive water scarcity, and increasing competition for this resource, between agriculture and urban consumption. Based on current knowledge, an integrated system for monitoring watering potted plants outdoors has been developed, which uses information from substrate moisture sensors and climate data obtained from weather station to determine the evapotranspiration of Rosmarinus officinalis. With these data, it was determined a variable called Kch that allows estimating the evapotranspiration of the plants, and consequently the need for irrigation, from the reference evapotranspiration (Eto). Through the data obtained throughout the test, it was possible to understand which percentage of moisture in the substrate that most benefited the water absorption by the plants.
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Keywords
Evapotranspiração Rosmarinus officinalis Sensores de humidade do substrato Coeficiente cultural (Kc) Monitorização de rega Agricultura de precisão Eficiência de rega.