Yazar "Koksal, Eyup Selim" için listeleme
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Crop Evapotranspiration Estimations of Red Pepper Using Field Level Remote Sensing Data and Energy Balance
Koksal, Eyup Selim; Artik, Cengiz; Tasan, Mehmet (Hard, 2019)In this study, the energy balance approach was used to estimate evapotranspiration (ET) of red pepper plots managed with four different irrigation strategies (100, 70, and 40% of ET, and rainfed) with drip irrigation systems ... -
Estimating missing hourly climatic data using artificial neural network for energy balance based ET mapping applications
Koksal, Eyup Selim; Cemek, Bilal; Cetin, Sakine; Gowda, Prasanna H.; Howell, Terry A. (Wiley, 2017)Remote sensing based evapotranspiration (ET) mapping has become an important tool for water resources management at a regional scale. Accurate hourly climatic data and alfalfa-reference ET (ETr) are crucial inputs for ... -
Estimating Water Stressed Dwarf Green Bean Pigment Concentration Through Hyperspectral Indices
Koksal, Eyup Selim; Ustun, Haluk; Ozcan, Hesna; Gunturk, Atilla (Pakistan Botanical Soc, 2010)In this study, the relationship between leaf pigment concentration (analyzed in the laboratory) and four spectral indexes (measured in the field) was investigated. For this purpose, field experiments consisting of six ... -
Estimation of dwarf green bean water use under semi-arid climate conditions through ground-based remote sensing techniques
Koksal, Eyup Selim; Kodal, Suleyman; Ustun, Haluk; Yildirim, Yusuf Ersoy (Elsevier, 2010)Determination of temporal and spatial distribution of water use (WU) within agricultural land is critical for irrigation management and could be achieved by remotely sensed data. The aim of this study was to estimate WU ... -
Evaluation of financial efficiency of drip-irrigation of red pepper based on evapotranspiration calculated using an iterative soil water-budget approach
Koksal, Eyup Selim; Tasan, Mehmet; Artik, Cengiz; Gowda, Prasanna (Elsevier, 2017)This study examined the effects of different water management strategies on red pepper (Capsicum annuum L.cv. Kapija) crop evapotranspiration (ETc), yield and fruit quality. The study was conducted in the Bafra Plains in ... -
Hyperspectral reflectance data processing through cluster and principal component analysis for estimating irrigation and yield related indicators
Koksal, Eyup Selim (Elsevier, 2011)Management of agricultural practices such as irrigation by using remotely sensed data requires background data obtained from field experiments carried out under controlled conditions. In this study, spectral and agronomic ... -
Large Area Evapotranspiration Mapping System
Bagis, Serdar; Koksal, Eyup Selim; Ustundag, Burak Berk (Ieee, 2015)Fresh water supplies management is a tough challenge in semi-arid and arid regions. The resources are limited and the demand is high. Agriculture is the major fresh water consumer and its usage should be carefully quantified. ... -
A new approach for neutron moisture meter calibration: artificial neural network
Koksal, Eyup Selim; Cemek, Bilal; Artik, Cengiz; Temizel, Kadir Ersin; Tasan, Mehmet (Springer, 2011)The neutron moisture meter (NMM) is a widely used device for sensing soil water content (SWC). Calibration accuracy and precision of the NMM are critical to obtain reliable results, and linear regression analysis of SWC ... -
Potential use of remote sensing techniques in evapotranspiration estimations at watershed level
Cetin, Saldne; Koksal, Eyup Selim (Springer, 2018)In hydrology, evapotranspiration (ET) is defined as phase conversion and rise of water in soils, plants, rivers, lakes, and seas under the atmospheric conditions. Investigation of water displacement through either ET or ... -
Predicting field capacity, wilting point, and the other physical properties of soils using hyperspectral reflectance spectroscopy: two different statistical approaches
Arslan, Hakan; Tasan, Mehmet; Yildirim, Demet; Koksal, Eyup Selim; Cemek, Bilal (Springer, 2014)In this study, we examined the ability of reflectance spectroscopy to predict some of the most important soil parameters for irrigation such as field capacity (FC), wilting point (WP), clay, sand, and silt content. FC and ... -
Spectral Reflectance Characteristics of Sugar Beet Under Different Levels of Irrigation Water and Relationships Between Growth Parameters and Spectral Indexes
Koksal, Eyup Selim; Gungor, Yetkin; Yildirim, Yusuf Ersoy (Wiley, 2011)The use of spectral vegetation indexes requires an experimental background. In this study field trials were conducted during 2004 and 2005 on sugar beet. Seven different irrigation treatments were applied. During the ... -
Yield and leaf area index estimations for sunflower plants using unmanned aerial vehicle images
Tunca, Emre; Koksal, Eyup Selim; Cetin, Sakine; Ekiz, Nazmi Mert; Balde, Hamadou (Springer, 2018)Vegetation is commonly monitored to improve efficiency of various agricultural practices. Spatial and temporal changes in plant growth and development can be monitored with the aid of remote sensing techniques employing ...
