نتایج جستجو برای: Crop water stress index

تعداد نتایج: 1376109  

A. Heydari E. Bijanzadeh R. Naderi Y. Emam

The relationship between canopy temperature and soil moisture is particularly important because of using canopy temperature as an indicator of crop water stress. A field experiment was conducted to calculate crop water stress index (CWSI) of two canola cultivars including RGS and Sarigol at College of Agriculture and Natural Resources of Darab, Shiraz University, Iran during 2013-2014 growing s...

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: :مهندسی بیوسیستم ایران 0
پدرام شعاع دانشجوی کارشناسی ارشد گروه مهندسی مکانیک ماشین‏های کشاورزی، دانشکدۀ کشاورزی، دانشگاه صنعتی اصفهان عباس همت استاد گروه مهندسی مکانیک ماشین‏های کشاورزی، دانشکدۀ کشاورزی، دانشگاه صنعتی اصفهان رسول امیرفتاحی دانشیار دانشکدۀ مهندسی برق و کامپیوتر، دانشگاه صنعتی اصفهان مهدی قیصری استادیار گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه صنعتی اصفهان

in order to decrease water consumption in agricultural sector, deficit irrigation has been suggested. for preventing a heavy loss in crop yield, management of water stress is essential. common methods for measuring plant water stress such as stomatal conductance are time-consuming and require specialized labor and a large number of measurement. temperature of leaf or canopy surface can be an in...

Journal: :International Journal of Remote Sensing and Earth Sciences (IJReSES) 2010

ژورنال: علوم آب و خاک 2009
امامی, یحیی, سپاسخواه, علیرضا, شعبانی, علی , هنر, تورج, کامگار حقیقی, علی اکبر,

Oil seed rape (Brasica napus) is an important crop, which is cultivated in Iran for oil production. As a management practice deficit irrigation strategy is applied to cope with water shortages, especially during drought periods. This research was conducted to study the effect of water stress on physiological parameter of oil seed rape in the experimental research field of Collage of Agriculture...

2005
L. Mateos R. Bryant

Irrigation scheduling requires an operational means to quantify plant water stress. Remote sensing may offer quick measurements with regional coverage that cannot be achieved by current ground-based sampling techniques. This study explored the relation between variability in fine-resolution measurements of canopy temperature and crop water stress in cotton fields in Central Arizona, USA. Using ...

A. Arzani F. Bahrami H. Amini

Safflower (Carthamustinctorius L.) is an oilseed crop adapted to drought prone arid and semi-arid environments. This study was conducted to evaluate the effects of water deficit stress on antioxidant activity, membrane stability index (MSI), leaf chlorophyll content, leaf area index (LAI) and their relationship with seed yield using 64 safflower genotypes grown under normal and water defici...

Journal: :international journal of advanced biological and biomedical research 2013
ezatollah farshadfar mohammad mehdi poursiahbidi seyed mehdi safavi

one of the possible ways to ensure future food needs of an increasing world population involves the better water use through the development of crop varieties which need less water and are more tolerant to drought. in order to study the response of twenty landraces of bread wheat to drought stress, an experiment was conducted in a randomized complete block design with three replications under t...

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