نتایج جستجو برای: cwsi

تعداد نتایج: 120  

2017
Jana Käthner Alon Ben-Gal Robin Gebbers Aviva Peeters Werner B. Herppich Manuela Zude-Sasse

In orchards, the variations of fruit quality and its determinants are crucial for resource effective measures. In the present study, a drip-irrigated plum production (Prunus domestica L. "Tophit plus"/Wavit) located in a semi-humid climate was studied. Analysis of the apparent electrical conductivity (ECa) of soil showed spatial patterns of sand lenses in the orchard. Water status of sample tre...

2010
L. Li Q. Yu L. Ma L. R. Ahuja

Plant water status is a key factor impacting crop growth and agricultural watermanagement. Cropwater stress may alter canopy temperature, the energy balance, transpiration, photosynthesis, canopy water use efficiency, and crop yield. The objective of this study was to calculate the Crop Water Stress Index (CWSI) from canopy temperature and energy balance measurements and evaluate the utility of...

Journal: :Remote Sensing 2012
Saleh Taghvaeian José L. Chávez Neil C. Hansen

With an increasing demand of fresh water resources in arid/semi-arid parts of the world, researchers and practitioners are relying more than ever on remote sensing techniques for monitoring and evaluating crop water status and for estimating crop water use or crop actual evapotranspiration (ETa). In this present study, infrared thermometry was used in conjunction with a few weather parameters t...

Journal: :Remote Sensing 2016
Joaquim Bellvert Jordi Marsal Joan Girona Victoria González-Dugo Elías Fereres Susan L. Ustin Pablo J. Zarco-Tejada

In the current scenario of worldwide limited water supplies, conserving water is a major concern in agricultural areas. Characterizing within-orchard spatial heterogeneity in water requirements would assist in improving irrigation water use efficiency and conserve water. The crop water stress index (CWSI) has been successfully used as a crop water status indicator in several fruit tree species....

Journal: :Journal of experimental botany 2007
M Möller V Alchanatis Y Cohen M Meron J Tsipris A Naor V Ostrovsky M Sprintsin S Cohen

Achieving high quality wine grapes depends on the ability to maintain mild to moderate levels of water stress in the crop during the growing season. This study investigates the use of thermal imaging for monitoring water stress. Experiments were conducted on a wine-grape (Vitis vinifera cv. Merlot) vineyard in northern Israel. Irrigation treatments included mild, moderate, and severe stress. Th...

2017
Daniele Masseroni Bianca Ortuani Martina Corti Pietro Marino Gallina Giacomo Cocetta Antonio Ferrante Arianna Facchi

Efficient management of irrigation water is fundamental in agriculture to reduce the environmental impacts and to increase the sustainability of crop production. The availability of adequate tools and methodologies to easily identify the crop water status in operating conditions is therefore crucial. This work aimed to assess the reliability of indices derived from imaging techniques—thermal in...

Journal: :Remote Sensing 2018
Alessandro Matese Rita Baraldi André Berton Carla Cesaraccio Salvatore Filippo Di Gennaro Pierpaolo Duce Osvaldo Facini Massimiliano Giuseppe Mameli Alessandra Piga Alessandro Zaldei

In light of climate change and its impacts on plant physiology, optimizing water usage and improving irrigation practices play a crucial role in crop management. In recent years, new optical remote sensing techniques have become widespread since they allow a non-invasive evaluation of plant water stress dynamics in a timely manner. Unmanned aerial vehicles (UAV) currently represent one of the m...

Journal: :Agricultural Water Management 2022

There is a growing interest of using canopy temperature (Tc) based methods, including crop water stress index (CWSI), for irrigation management. However, different approaches exist to normalize Tc microclimatic conditions, which can influence the accuracy and suitability CWSI scheduling. This study evaluated performance computation their sensitivity changes in soil depletion under levels. were ...

2018
Tomas Poblete Samuel Ortega-Farías Dongryeol Ryu

Water stress caused by water scarcity has a negative impact on the wine industry. Several strategies have been implemented for optimizing water application in vineyards. In this regard, midday stem water potential (SWP) and thermal infrared (TIR) imaging for crop water stress index (CWSI) have been used to assess plant water stress on a vine-by-vine basis without considering the spatial variabi...

Journal: :Journal of experimental botany 2005
Y Cohen V Alchanatis M Meron Y Saranga J Tsipris

Canopy temperature has long been recognized as an indicator of plant water status and as a potential tool for irrigation scheduling. In the present study, the potential of using thermal images for an in-field estimation of the water status of cotton under a range of irrigation regimes was investigated. Thermal images were taken with a radiometric infrared video camera. Specific leaves that appe...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید