A5005710334- Irrigation Practices and Water Management
- Plant Water Relations and Carbon Dynamics
- Greenhouse Technology and Climate Control
- Water resources management and optimization
- Climate change impacts on agriculture
- Soil and Unsaturated Flow
- Sugarcane Cultivation and Processing
- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Polymer-Based Agricultural Enhancements
- Soil Management and Crop Yield
- Growth and nutrition in plants
- Efficiency Analysis Using DEA
- Hydrology and Drought Analysis
- Plant tissue culture and regeneration
- Photovoltaic System Optimization Techniques
- Plant Growth Enhancement Techniques
- Plant Stress Responses and Tolerance
- Magnetic and Electromagnetic Effects
- Geography and Environmental Studies
- Water-Energy-Food Nexus Studies
- Plant nutrient uptake and metabolism
- Rice Cultivation and Yield Improvement
- Silicon Effects in Agriculture
- Environmental and biological studies
University of Évora
2009-2020
Salinity is a major problem affecting crop production all over the world: 20% of cultivated land in world, and 33% irrigated land, are salt-affected degraded. This process can be accentuated by climate change, excessive use groundwater (mainly if close to sea), increasing low-quality water irrigation, massive introduction irrigation associated with intensive farming. Excessive soil salinity reduces productivity many agricultural crops, including most vegetables, which particularly sensitive...
Abstract The Hargreaves–Samani (HS) evapotranspiration equation is very useful for the on‐site irrigation management in data‐short situations such as small and midsize farms landscaped areas. Although much work has been performed to improve precision of (ET o ) estimates use at new locations, results have not consistent many confirmed by other works. purpose this study was review evaluate seven most promising parameters used calibration HS equation, using two different regions: California...
Irrigation not only has been a key factor for the development and maintenance of human societies but it still plays this role now is foreseen that in future as well. Its evolution constrained to advance knowledge on matters regarding Agronomy Water Engineering technology however, many challenges deserve further research. It worth note Brazil strongly promoted irrigation last decade. Within limited extension article, some current topics irrigation, them are innovative such us research line...
ResUMo: Investigou-se a tendência de variação das necessidades úteis rega com as alterações climáticas na bacia hidrográfica do Guadiana para principais culturas agrícolas regadio mais importância região.Nesta análise aplicou-se o modelo balanço hídrico solo IsAReG e utilizaram-se séries variáveis registadas localmente entre 1963 2009.os resultados indicam, toda Guadiana, um aumento da temperatura média ar uma diminuição precipitação anual, que seguem identificadas maior escala por vários...
ABSTRACT Automation of surface irrigation can be an economic and ecological way increasing global food production. In this work a fully automated cablegation system is evaluated that adapts the application time depth to actual infiltration rate soil in real‐time. The calculates equation from advance times control furrow then simulates every field, establishing optimum for each furrow. methodology was field organized contour terraces with furrows various lengths order evaluate practical...
Some results are presented from a project aiming the water use optimisation an environmental point of view. This means that decision criterion in irrigation management is deficit irrigation, rather than maximum ETc as amount. Some experiments with irrigation sunflower crop (in 2004 season) and maize 2005) were carried out Irrigation District Divor (Alentejo, South Portugal). Crop growth production parameters evaluated relative to three experimental regimes: 1) opportunity amount soil...
Annual patterns in climate parameters were studied to evaluate how these influence the quality of reference evapotranspiration (ETo) estimates obtained from Hargreaves-Samani (HS) equation, since method only uses measured temperature directly. The work evaluates can be used improve HS ETo estimates. Ten-year moving averages a set California Irrigation Management Information System (CIMIS) stations relationships between solar radiation (Rs), (T) and ETo. results indicate that T treads behind...