Water use efficiency and crop water balance of rainfed wheat in a semi-arid environment: sensitivity of future changes to projected climate changes and soil type

2015 ◽  
Vol 123 (3-4) ◽  
pp. 565-579 ◽  
Author(s):  
Yanmin Yang ◽  
De Li Liu ◽  
Muhuddin Rajin Anwar ◽  
Garry O’Leary ◽  
Ian Macadam ◽  
...  
Keyword(s):  
Water Balance ◽  
Water Use Efficiency ◽  
Water Use ◽  
Soil Type ◽  
Climate Changes ◽  
Arid Environment ◽  
Crop Water ◽  
Use Efficiency ◽  
Rainfed Wheat ◽  
Semi Arid

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.

Deficit irrigation improves maize yield and water use efficiency in a semi-arid environment

2021 ◽  
Vol 243 ◽  
pp. 106483 ◽  
Author(s):  
Yufeng Zou ◽  
Qaisar Saddique ◽  
Ajaz Ali ◽  
Jiatun Xu ◽  
Muhammad Imran Khan ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Deficit Irrigation ◽  
Maize Yield ◽  
Arid Environment ◽  
Use Efficiency ◽  
Semi Arid

scholarly journals Effect of weather on yield, heat and water use efficiency of wheat crop in a semi-arid environment

2021 ◽  
Vol 21 (1) ◽  
pp. 89-92
Author(s):  
RACHANA DUBEY ◽  
HIMANSHU PATHAK ◽  
SANATAN PRADHAN ◽  
BIDISHA CHAKRABARTI ◽  
N. MANIKANDAN
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Environment ◽  
Wheat Crop ◽  
Use Efficiency ◽  
Semi Arid

Constraints on water use efficiency of drought tolerant maize grown in a semi-arid environment

2016 ◽  
Vol 186 ◽  
pp. 66-77 ◽  
Author(s):  
Judy A. Tolk ◽  
Steven R. Evett ◽  
Wenwei Xu ◽  
Robert C. Schwartz
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Environment ◽  
Drought Tolerant ◽  
Use Efficiency ◽  
Semi Arid

scholarly journals Soil moisture prediction, evapotranspiration, yield and water use efficiency of soybean (Glycine max L.) crop under variable weather conditions in a semi-arid environment

MAUSAM ◽  
2021 ◽  
Vol 67 (3) ◽  
pp. 683-690
Author(s):  
S. PRADHAN ◽  
V. K. SEHGAL ◽  
D. K. DAS ◽  
K. K. BANDYOPADHYAY ◽  
A. K. JAIN ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Water Use Efficiency ◽  
Water Use ◽  
Sandy Loam ◽  
Arid Environment ◽  
Balance Model ◽  
Soybean Crop ◽  
Complete Life Cycle ◽  
Use Efficiency ◽  
Semi Arid

A field experiment was conducted during kharif season of 2009 and 2010 in a sandy loam soil of New Delhi to study the effect of weather, achieved by sowing at normal (D1) and late (D2), on soil moisture prediction, evapotranspiration (ET), yield and water use efficiency (WUE) of three varieties (V1: JS 335, V2: Pusa 9712 and Pusa 9814) of soybean. Study of soybean phenology showed that there was reduction in the number of days taken for the crop to complete life cycle with delayed sowing. The agrometeorological water balance model could satisfactorily predict soil moisture content during soybean crop growth period with RMSE (%) varying between 6.27 to 12.06 and correlation coefficient between 0.828 to 0.982. The ET decreased significantly with delay in sowing; however there was no significant variation among the varieties. Among the stages of the soybean crop, mid season stage had highest ET followed by development stage, late season stage and initial stage. Normal sowing resulted in higher yield but lower WUE than the late sowing. Among the cultivars, JS 335 resulted in lower yield and WUE than Pusa 9712 and Pusa 9814. It may be recommended that, Pusa 9712 or Pusa 9814 may be sown during first and second week of July (normal sowing) to achieve higher yield in the semi-arid environment of Delhi region.

scholarly journals Evaluation of gas exchanges and production of genotypes of maçã banana type cultivated in the semi-arid region of Bahia

2018 ◽  
Vol 40 (3) ◽  
Author(s):  
Alessandre Gabriel Oliveira Ramos ◽  
Sérgio Luiz Rodrigues Donato ◽  
Alessandro de Magalhães Arantes ◽  
Maurício Antônio Coelho Filho ◽  
Maria Geralda Vilela Rodrigues
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Environment ◽  
Useful Plants ◽  
Gas Exchanges ◽  
Randomized Experimental Design ◽  
Low Humidity ◽  
Use Efficiency ◽  
Semi Arid Region ◽  
Semi Arid

Abstract The objective of this study was to evaluate gas exchange and production of Maçã bananas type, at different times of the year and the day in semi-arid environment. Seven genotypes genotypes were used: Maçã, Caipira, BRS Tropical, BRS Princesa, YB42-03, YB42-17 and YB42-47, arranged in a completely randomized experimental design with five replicates and four useful plants per plot. For the physiological characteristics, a factorial arrangement 7x7x2 was considered (seven genotypes, seven evaluation periods, two reading times, 8:00 a.m. and 2:00 p.m.). Photosynthetic rates, carboxylation efficiency, and instantaneous water use efficiency are higher at 8:00 a.m., due to meteorological conditions, while foliar temperature and transpiration are higher at 2:00 p.m., due to the elevation of air temperature and low humidity. Months with higher radiation and intermediate temperature provided higher rates of photosynthesis, higher efficiency of carboxylation and photochemistry of photosynthesis. In general, genotype YB42-47 was the most productive, with higher water use efficiency and photosynthesis rates.

scholarly journals Irrigation, nitrogen and sulphur fertilization response on productivity, water use efficiency and quality of Ethiopian mustard (Brassica carinata) in a semi-arid environment

2018 ◽  
Vol 10 (2) ◽  
pp. 593-600
Author(s):  
O.P. Verma ◽  
S. Singh ◽  
S. Pradhan ◽  
G. Kar ◽  
S.K. Rautaray
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Seed Yield ◽  
Agricultural Research ◽  
Arid Environment ◽  
Brassica Carinata ◽  
Ethiopian Mustard ◽  
Use Efficiency ◽  
Semi Arid

Water and nutrient deficiency are two major constraints that drastically affect rapeseed and mustard production under semi-arid regions of North-Western India. To cope with this problem, a study was undertaken to optimize irrigation, nitrogen and sulphur levels for productivity and quality of Ethiopian mustard(Brassica carinata).Field experiments were conducted during winter seasons of 2004-05 and 2005-06 at the Water Technology Centre (WTC), Indian Council of Agricultural Research (ICAR) – Indian Agricultural Research Institute (IARI), New Delhi, India. Irrigation, nitrogen and sulphur levels significantly (P<0.05) affected plant height, LAI, siliqua weight, seeds/siliqua, test weight, seed and biomass yield of Ethiopian mustard. Application of three irrigations (seedling, 50% flowering and pod development stage) to Ethiopian mustard   increased seed yield by 27-28% compared to one irrigation (seedling stage). Nitrogen @ 90 kg ha-1 produced 49-54 % higher seed yield of Ethiopian mustard compared to no application. Similarly, sulphur application @ 40 kg ha-1 increased seed yield by 33-34 % compared to no application of sulphur. The oil content of Ethiopian mustard   was significantly (P<0.05) affected by nitrogen and sulphur levels. Among the three treatments, irrigation treatment only significantly affected evapotranspiration of the studied crop. From the above study, it is suggested that application of  3 irrigations with 90 kg N ha-1 and 40 kg S ha-1 may be practiced for achieving higher seed yield, quality and water use efficiency of Ethiopian mustard in the semi-arid environment of Northern part of India.

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