Results 21 to 30 of about 10,359 (261)

Spatiotemporal Variation of Crop Coefficient of Winter Wheat in Huaibei Plain

open access: yesGuan'gai paishui xuebao, 2021
【Background】 Water uptake by plants and its subsequent transpiration is an important process in the hydrological cycle but difficult to measure and calculate.
HUA Jiacheng   +3 more
doaj   +1 more source

Temporal Downscaling of Crop Coefficient and Crop Water Requirement from Growing Stage to Substage Scales

open access: yesThe Scientific World Journal, 2012
Crop water requirement is essential for agricultural water management, which is usually available for crop growing stages. However, crop water requirement values of monthly or weekly scales are more useful for water management.
Songhao Shang
doaj   +1 more source

Simulating Crop Evapotranspiration Response under Different Planting Scenarios by Modified SWAT Model in an Irrigation District, Northwest China. [PDF]

open access: yesPLoS ONE, 2015
Modelling crop evapotranspiration (ET) response to different planting scenarios in an irrigation district plays a significant role in optimizing crop planting patterns, resolving agricultural water scarcity and facilitating the sustainable use of water ...
Xin Liu   +3 more
doaj   +1 more source

Climate variability impact on crop evapotranspiration in the upper East region of Ghana

open access: yesEnvironmental Challenges
Ghana's agriculture is primarily rain-fed, making it vulnerable to the impact of climate variability and climate change. This study examined the trends and impact of climatic variability and evapotranspiration on the crop evapotranspiration of selected ...
Peter Osei Boamah   +5 more
doaj   +1 more source

Water requirement and crop coefficients of sorghum in Apodi Plateau

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2021
Sorghum is of significant economic importance for Northeastern Brazil, since it exhibits high growth rates in regions with irregular rainfall distribution and high temperatures, and is an alternative to corn, which has greater water requirements. Despite
João G. A. Lima   +4 more
doaj   +1 more source

Assessing Crop Coefficients for Natural Vegetated Areas Using Satellite Data and Eddy Covariance Stations

open access: yesSensors, 2017
The Food and Agricultural Organization (FAO) method for potential evapotranspiration assessment is based on the crop coefficient, which allows one to relate the reference evapotranspiration of well irrigated grass to the potential evapotranspiration of ...
Chiara Corbari   +4 more
doaj   +1 more source

Predicating the Crop Coefficient of Eggplant from Crop Evapotranspiration and Atmometer (ETgage) [PDF]

open access: yesEngineering and Technology Journal, 2014
The objectives of the study are to predicate crop coefficient (Kc) for eggplant using watermarks gypsum blocks and atmometer (or ETgage) devices during the growing season and to compare the predicating values of the crop coefficient with FAO recommended ...
Ehab Fahkree Hikamat   +1 more
doaj   +1 more source

Crop Simulation and Crop Evapotranspiration for Irrigation Management of Spinach [PDF]

open access: yesHortScience, 2006
Improving irrigation water management for crop production is becoming increasingly important in South Texas as the water supplies shrink and competition with urban centers in the region grows. Crop simulators and crop evapotranspiration (ET) are appealing methods for estimating crop water use and irrigation requirements because of ...
Giovanni Piccinni   +6 more
openaire   +1 more source

Correcting Apparent Priming Bias Unveils Fertilizer Nitrogen‐Risk Archetypes of Surplus and Depletion Across Asian Rice Systems

open access: yesAdvanced Science, EarlyView.
Correcting the apparent priming effect resolves systematic biases in Asian rice fertilizer nitrogen accounting. Net soil retention drops below 7%, while 48% of fertilizer escapes, inflicting US$98.53 billion in annual reactive‐nitrogen damages. High‐resolution mapping uncovers N‐risk archetypes across 42% of the rice area, delivering a spatially ...
Xiuyun Liu   +5 more
wiley   +1 more source

Tomato and cowpea crop evapotranspiration in an unheated greenhouse

open access: yesWater Science and Engineering, 2008
With the development of protected cultivation of vegetables in China, it is necessary to study the water requirements of crops in greenhouses. Lysimeter experiments were carried out to investigate tomato (2001) and cowpea (2004) crop evapotranspiration ...
Xu Junzeng   +3 more
doaj   +1 more source

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