نتایج جستجو برای: شاخص cwsi
تعداد نتایج: 74601 فیلتر نتایج به سال:
Accurate canopy extraction and temperature calculations are crucial to minimizing inaccuracies in thermal image-based estimation of orchard water status. Currently, no quantitative comparison methods exists the context precision irrigation. The accuracies four were compared, effect on status was explored for these methods: 2-pixel erosion (2PE) where non-canopy pixels removed by thresholding mo...
Abstract Canopy temperature is generally accepted as an indirect but rapid, accurate, and large-scale indicator of crop water status is, therefore, proposed to monitor irrigation needs. Crop Water Stress Index (CWSI) the most widely used among existing thermal-based indicators, its links with stress have been demonstrated. When calculating CWSI using empirical approach, differential between can...
Unmanned aerial vehicle (UAV) remote sensing has become a readily usable tool for agricultural water management with high temporal and spatial resolutions. UAV-borne thermography can monitor crop status near real-time, which enables precise irrigation scheduling based on an accurate decision-making strategy. The stress index (CWSI) is widely adopted indicator of plant practices; however, depend...
Alfalfa (Medicago sativa L.) is an important forage crop grown worldwide for animal feed, green manure, and as a land cover. However, very few approaches exist timely field scale mapping of status, yield quality attributes management inputs, harvest storage resources, budgeting, insurance, etc. This study aims to apply high-resolution aerial multispectral thermal infrared remote sensing (7 cm/p...
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...
Wine quality is the final outcome of interactions within a vineyard between meteorological conditions, terrain and soil properties, plant physiology numerous viticultural decisions, all which are commonly summarized as terroir effect. Associations wine single or topographic factor usually weak, but little information available on effect (elevation, aspect slope) compound micro-terroir factor. W...
تعیین زمان مناسب آبیاری یکی از تصمیمگیری های مهمی است که برنامهریزان واحدهای زراعی با آن روبهرو هستند. استفاده از دمای پوشش سبز برای برنامهریزی آبیاری گیاهان یکی از روشهایی است که مورد توجه محققین قرار گرفته است. در این روش شاخص های متعددی ارائه شده است که ازبین آنها میتوان به شاخص تنش آبی گیاه به روش ایدسو اشاره کرد. بهمنظور برنامهریزی آبیاری ذرت تابستانه در شرایط اقلیمی اهواز با استف...
This study compared the performances of subsurface drip irrigation (SDI) to sprinkler (SI) cool-season turf mix (CS) and warm-season (WS) turfgrass species while investigating their response different scheduling strategies. Moreover, suitability crop water stress index (CWSI) for monitoring was tested. Irrigation applied up field capacity when 30%, 50% 70% total available consumed. All paramete...
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