Impact of conservation practices on soil hydrothermal properties and crop water use efficiency in a dry agricultural region of the tibetan plateau

2020 ◽  
Vol 200 ◽  
pp. 104619
Author(s):  
Jiaxin Wang ◽  
Xiaodong Gao ◽  
Yanqing Zhou ◽  
Pute Wu ◽  
Xining Zhao
Keyword(s):  
Tibetan Plateau ◽  
Water Use Efficiency ◽  
Water Use ◽  
Conservation Practices ◽  
The Tibetan Plateau ◽  
Crop Water ◽  
Agricultural Region ◽  
Crop Water Use ◽  
Use Efficiency

scholarly journals High-Throughput Phenotyping of Crop Water Use Efficiency via Multispectral Drone Imagery and a Daily Soil Water Balance Model

2018 ◽  
Vol 10 (11) ◽  
pp. 1682 ◽  
Author(s):  
Kelly Thorp ◽  
Alison Thompson ◽  
Sara Harders ◽  
Andrew French ◽  
Richard Ward
Keyword(s):  
Water Balance ◽  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
High Throughput ◽  
Soil Water Balance ◽  
Balance Model ◽  
Crop Water ◽  
Crop Water Use ◽  
Use Efficiency

Improvement of crop water use efficiency (CWUE), defined as crop yield per volume of water used, is an important goal for both crop management and breeding. While many technologies have been developed for measuring crop water use in crop management studies, rarely have these techniques been applied at the scale of breeding plots. The objective was to develop a high-throughput methodology for quantifying water use in a cotton breeding trial at Maricopa, AZ, USA in 2016 and 2017, using evapotranspiration (ET) measurements from a co-located irrigation management trial to evaluate the approach. Approximately weekly overflights with an unmanned aerial system provided multispectral imagery from which plot-level fractional vegetation cover ( f c ) was computed. The f c data were used to drive a daily ET-based soil water balance model for seasonal crop water use quantification. A mixed model statistical analysis demonstrated that differences in ET and CWUE could be discriminated among eight cotton varieties ( p < 0 . 05 ), which were sown at two planting dates and managed with four irrigation levels. The results permitted breeders to identify cotton varieties with more favorable water use characteristics and higher CWUE, indicating that the methodology could become a useful tool for breeding selection.

Effects of biochar application on crop water use efficiency depend on experimental conditions: A meta-analysis

2020 ◽  
Vol 249 ◽  
pp. 107763 ◽  
Author(s):  
Yang Gao ◽  
Guangcheng Shao ◽  
Jia Lu ◽  
Kun Zhang ◽  
Shiqing Wu ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Meta Analysis ◽  
Crop Water ◽  
Experimental Conditions ◽  
Crop Water Use ◽  
Use Efficiency
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