Search results for "Crop Water Statu"

showing 4 items of 4 documents

Detecting crop water status in mature olive orchards using vegetation spectral measurements.

2014

Full spectral measurements (350–2500 nm) at tree canopy and leaf levels and the corresponding leaf water potentials (LWP) were acquired in an olive grove of Sicily, at different hours of the day, during summer season 2011. The main objective of the work was to assess, on the basis of the experimental data-set, two different approaches to detect crop water status in terms of LWP. Specifically, using existing families of Vegetation Indices (VIs) and applying Partial Least Squares Regression (PLSR) were optimised and tested. The results indicated that a satisfactory estimation of LWP at tree canopy and leaf levels can be obtained using vegetation indices based on the near infrared–shortwave in…

HydrologyLeaf Water PotentialTree canopySpectral indexMean squared errorMoistureSoil ScienceCrop Water StatuVegetationCropSpectroradiometerControl and Systems EngineeringPartial least squares regressionSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliLeaf water potential; Olive tree; Field SpectroscopyAgronomy and Crop ScienceOlive treeSpectroscopyField SpectroscopyFood ScienceRemote sensingMathematics
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Effects of Saline and Deficit Irrigation on Soil-Plant Water Status and Potato Crop Yield under the Semiarid Climate of Tunisia

2019

Water supplies have been decreasing in several semi-arid regions, and it is therefore necessary to adopt irrigation strategies aimed at maximizing water use efficiency. In this paper, the effects of saline and deficit irrigation on water use efficiency and on potato crop response, based on observations of soil and plant water status, were investigated. Experiments were carried out in Central Tunisia, by monitoring potato crop growth during two seasons in four distinct treatments (T1&ndash

Irrigationwater use efficiency0208 environmental biotechnologyGeography Planning and DevelopmentDeficit irrigationTJ807-83002 engineering and technologyManagement Monitoring Policy and LawTD194-195Renewable energy sourcesthermal imagingSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliGE1-350Water-use efficiencyWater contentcrop water statucrop water stress indexdeficit irrigationEnvironmental effects of industries and plantsRenewable Energy Sustainability and the EnvironmentCrop yieldfungiCrop water status; Crop water stress index; Deficit irrigation; Full irrigation; Thermal imaging; Water use efficiencyIrrigation schedulingfood and beverages04 agricultural and veterinary sciencesBuilding and ConstructionSaline water020801 environmental engineeringfull irrigationEnvironmental sciencesAgronomy040103 agronomy & agriculture0401 agriculture forestry and fisheriesEnvironmental sciencecrop water statusWater useSustainability
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Assessing opportunities for water savings in large-scale pressurized irrigation systems using actual evapotranspiration retrieved by surface energy b…

Remote sensing allows the observation of large land stretches and the acquisition of worthwhile information that can be used efficaciously in agro-hydrologic systems. Satellite imagery associated to computational models provide a reliable resource in estimating evapotranspiration (ET) fluxes based on surface energy balance. On irrigated crops, quantifying the spatial distribution of actual ET enables a broad range of applications such as irrigation management, monitoring water distribution, assessing crop water status and irrigation system performance. The general objective of the research was to propose a methodology to estimate ET by using Landsat Thematic Mapper (TM) images and surface e…

Remote sensing surface energy balance actual evapotranspiration irrigation water saving Irrigation monitoring crop water status.Settore ICAR/02 - Costruzioni Idrauliche E Marittime E Idrologia
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Detection of crop water status in mature olive orchards using vegetation spectral measurements

2013

crop water status olive orchards spectral measurementsSettore ICAR/02 - Costruzioni Idrauliche E Marittime E IdrologiaSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali
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