Emerging topics in scientific research on global water-use efficiency

2019 ◽  
Vol 157 (6) ◽  
pp. 480-492
Author(s):  
J. L. Aleixandre-Tudó ◽  
L. Castelló-Cogollos ◽  
J. L. Aleixandre ◽  
R. Aleixandre-Benavent
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Crop Production ◽  
Impact Factors ◽  
Key Words And Phrases ◽  
Science Field ◽  
Journal Citation Reports ◽  
Research Fields ◽  
Subject Categories ◽  
Use Efficiency

AbstractA bibliometric analysis of research articles published on water-use efficiency was performed using the Web of Science database and evaluated. Journal titles, publication years, subject categories, keywords and countries publishing were obtained. A number of 2077 papers were retrieved, two-thirds of them published in the last decade. The articles were published in 439 journals, with Agricultural Water Management, Agronomy Journal, Crop Science, Field Crops Research and Indian Journal of Agricultural Sciences the most productive. Most of the leading productive journals have Impact Factors in the top quartiles of the Journal Citation Reports. Agronomy, Plant Sciences, Water Resources and Agriculture Multidisciplinary were the most common journal subject categories, indicating a wide diversity of research fields ascribed to this topic. The predominant key words and phrases used were growth, ‘carbon isotope discrimination’, yield, photosynthesis, ‘gas exchange’, evapotranspiration and ‘stomatal conductance’. The productivity ranking for countries was headed by China (456 papers), followed by the USA (410), Australia (176) and India (165). A content analysis of the papers made identification of the key issues of greatest scientific concern possible, as well as their evolution over time. The most cited papers relate to physiological aspects, but also important studies on experimental biology, drought resistance, effects of climate, crop production and ecology, among others.

Water use efficiency of spring wheat in the semi-arid Canadian prairies: Effect of legume green manure, type of spring wheat, and cropping frequency

2014 ◽  
Vol 94 (2) ◽  
pp. 223-235 ◽  
Author(s):  
R. Kröbel ◽  
R. Lemke ◽  
C. A. Campbell ◽  
R. Zentner ◽  
B. McConkey ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Spring Wheat ◽  
Green Manure ◽  
Crop Production ◽  
Canadian Prairies ◽  
Cropping Frequency ◽  
Use Efficiency ◽  
Semi Arid ◽  
Legume Green Manure

Kröbel, R., Lemke, R., Campbell, C. A., Zentner, R., McConkey, B., Steppuhn, H., De Jong, R. and Wang, H. 2014. Water use efficiency of spring wheat in the semi-arid Canadian prairies: Effect of legume green manure, type of spring wheat, and cropping frequency. Can. J. Soil Sci. 94: 223–235. In the semi-arid Canadian prairie, water is the main determinant of crop production; thus its efficient use is of major agronomic interest. Previous research in this region has demonstrated that the most meaningful way to measure water use efficiency (WUE) is to use either precipitation use efficiency (PUE) or a modified WUE that accounts for the inefficient use of water in cropping systems that include summer fallow. In this paper, we use these efficiency measures to determine how cropping frequency, inclusion of a legume green manure, and the type of spring wheat [high-yielding Canada Prairie Spring (CPS) vs. Canada Western Red Spring (CWRS)] influence WUE using 25 yr of data (1987–2011) from the “New Rotation” experiment conducted at Swift Current, Saskatchewan. This is a well-fertilized study that uses minimum and no-tillage techniques and snow management to enhance soil water capture. We compare these results to those from a 39-yr “Old Rotation” experiment, also at Swift Current, which uses conventional tillage management. Our results confirmed the positive effect on WUE of cropping intensity, and of CPS wheat compared with CWRS wheat, while demonstrating the negative effect on WUE of a green manure crop in wheat-based rotations in semiarid conditions. Furthermore, we identified a likely advantage of using reduced tillage coupled with water conserving snow management techniques for enhancing the efficiency of water use.

RELATIVE PRODUCTIVITY, PROFITABILITY AND WATER USE EFFICIENCY OF CROPPING SYSTEMS IN HOT ARID INDIA

2014 ◽  
Vol 50 (4) ◽  
pp. 549-572 ◽  
Author(s):  
V. S. RATHORE ◽  
N. S. NATHAWAT ◽  
B. MEEL ◽  
B. M. YADAV ◽  
J. P. SINGH
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Mung Bean ◽  
Crop Production ◽  
Cropping Systems ◽  
Cropping System ◽  
Arid Environment ◽  
Application Rate ◽  
Cluster Bean ◽  
Use Efficiency

SUMMARYThe choice of an appropriate cropping system is critical to maintaining or enhancing agricultural sustainability. Yield, profitability and water use efficiency are important factors for determining suitability of cropping systems in hot arid region. In a two-year field experiment (2009/10–2010/11) on loam sandy soils of Bikaner, India, the production potential, profitability and water use efficiency (WUE) of five cropping systems (groundnut–wheat, groundnut–isabgol, groundnut–chickpea, cluster bean–wheat and mung bean–wheat) each at six nutrient application rate (NAR) i.e. 0, 25, 50, 75, 100% recommended dose of N and P (NP) and 100% NP + S were evaluated. The cropping systems varied significantly in terms of productivity, profitability and WUEs. Averaged across nutrient application regimes, groundnut–wheat rotation gave 300–1620 kg ha−1 and 957–3365 kg ha−1 higher grain and biomass yields, respectively, than other cropping systems. The mean annual net returns were highest for the mung bean–wheat system, which returned 32–57% higher net return than other cropping systems. The mung bean–wheat and cluster bean–wheat systems had higher WUE in terms of yields than other cropping systems. The mung bean–wheat system recorded 35–63% higher WUE in monetary terms compared with other systems. Nutrients application improved yields, profit and WUEs of cropping systems. Averaged across years and cropping systems, the application of 100% NP improved grain yields, returns and WUE by 1.7, 3.9 and 1.6 times than no application of nutrients. The results suggest that the profitability and WUEs of crop production in this hot arid environment can be improved, compared with groundnut–wheat cropping, by substituting groundnut by mung bean and nutrients application.

Improving Water Use Efficiency in Agronomic Crop Production

2019 ◽  
pp. 13-29 ◽  
Author(s):  
Syed Ahsan Zahoor ◽  
Shakeel Ahmad ◽  
Ashfaq Ahmad ◽  
Aftab Wajid ◽  
Tasneem Khaliq ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Crop Production ◽  
Use Efficiency

Maize Crop Production and Water Use Efficiency as Affected by Planting Methods

2002 ◽  
Vol 2 (1) ◽  
pp. 141-144 ◽  
Author(s):  
Muhammad Shafiq ◽  
Iqbal Hassan . ◽  
Zahid Hussain .
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Crop Production ◽  
Maize Crop ◽  
Planting Methods ◽  
Use Efficiency

scholarly journals Evapotranspiration, crop coefficient and water use efficiency of coriander grown in tropical environment

2018 ◽  
Vol 36 (4) ◽  
pp. 446-452 ◽  
Author(s):  
Vicente de PR da Silva ◽  
Inajá Francisco de Sousa ◽  
Alexandra L Tavares ◽  
Thieres George F da Silva ◽  
Bernardo B da Silva ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Crop Production ◽  
Field Experiments ◽  
Growth Parameters ◽  
Crop Coefficient ◽  
Growing Season ◽  
Tropical Environment ◽  
Mean Values ◽  
Use Efficiency

ABSTRACT The water scarcity is expected to intensify in the future and irrigation becomes an essential component of crop production, especially in arid and semiarid regions, where the available water resources are limited. Four field experiments were carried out at tropical environment in Brazil in 2013 and 2014, in order to evaluate the effect of planting date on crop evapotranspiration (ETc), crop coefficient (Kc), growth parameters and water use efficiency (WUE) of coriander (Coriandrum sativum) plants. The planting dates occurred during winter, spring, summer and autumn growing seasons. ETc was obtained through the soil water balance method and the reference evapotranspiration (ETo) through the Penman-Monteith method, using data collected from an automatic weather station located close to the experimental area. The results of the research showed that the mean values of coriander ETc and Kc were 139.8 mm and 0.87, respectively. Coriander water demand is higher in the summer growing season and lower in the winter; however, its yield is higher in the autumn and lower in the winter. Coriander has higher yield and development of its growth variables in the autumn growing season. The results also indicated that the interannual climate variations had significant effects on most growth variables, as yield, ETc and Kc of coriander grown in tropical environment.

Water Use Efficiency as a Constraint and Target for Improving the Resilience and Productivity of C3and C4Crops

2019 ◽  
Vol 70 (1) ◽  
pp. 781-808 ◽  
Author(s):  
Andrew D.B. Leakey ◽  
John N. Ferguson ◽  
Charles P. Pignon ◽  
Alex Wu ◽  
Zhenong Jin ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Crop Production ◽  
Crop Improvement ◽  
Canopy Structure ◽  
Complex Trait ◽  
Carbon Gain ◽  
Crop Development ◽  
Component Traits ◽  
Use Efficiency

The ratio of plant carbon gain to water use, known as water use efficiency (WUE), has long been recognized as a key constraint on crop production and an important target for crop improvement. WUE is a physiologically and genetically complex trait that can be defined at a range of scales. Many component traits directly influence WUE, including photosynthesis, stomatal and mesophyll conductances, and canopy structure. Interactions of carbon and water relations with diverse aspects of the environment and crop development also modulate WUE. As a consequence, enhancing WUE by breeding or biotechnology has proven challenging but not impossible. This review aims to synthesize new knowledge of WUE arising from advances in phenotyping, modeling, physiology, genetics, and molecular biology in the context of classical theoretical principles. In addition, we discuss how rising atmospheric CO2concentration has created and will continue to create opportunities for enhancing WUE by modifying the trade-off between photosynthesis and transpiration.

scholarly journals IMPACT OF LASER LEVELING TECHNOLOGY ON WATER USE EFFICIENCY AND CROP PRODUCTIVITY IN THE COTTON –WHEAT CROPPING SYSTEM IN SINDH

2016 ◽  
Vol 4 (2) ◽  
pp. 220-231
Author(s):  
Wajid Ali Shahani ◽  
Feng Kaiwen ◽  
Aslam Memon
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Crop Production ◽  
Cropping System ◽  
Soil Surface ◽  
Crop Productivity ◽  
Moisture Distribution ◽  
Study Results ◽  
Use Efficiency

The crop productivity in Pakistan is very low as majority of the farmers are still practicing traditional farming techniques. The existing crop production technologies do not offer effective and efficient utilization of natural resources, particularly that of water. Moreover, a significant amount of irrigation water is wasted due to uneven fields and ditches. Unevenness of the soil surface also has a major impact on the germination, stand and yield of crops through nutrient water interaction and salt and soil moisture distribution pattern. Therefore, the water use efficiency along with yield per acre could be increase by adopting resource conservation technologies like laser leveling. A sample of 120 growers including 60 wheat growers and 60 cotton growers were selected from Mirpurkhas & Tando Allahyar districts of Sindh province of Pakistan. Study results revealed that about 21 percent irrigation water saved by the adoption of laser leveling technology and also obtained higher yield and profit margins comparatively. Study concluded that adoption of laser leveling technology helps in reducing the farm input costs, improve water use efficiency and enhance crop productivity.

scholarly journals Crescimento e produção do jambu submetido a lâminas de irrigação

2020 ◽  
Author(s):  
Camila Duane Corrêa Gaia ◽  
Italo Marlone Gomes Sampaio ◽  
Mariele dos Santos Araújo ◽  
Jéssica Mariana Coelho Magalhães ◽  
Raquel Giseli Assis Rosário ◽  
...  
Keyword(s):  
Experimental Design ◽  
Water Use Efficiency ◽  
Water Use ◽  
Crop Production ◽  
Dry Matter ◽  
Field Capacity ◽  
Stem Diameter ◽  
Fresh Matter ◽  
Irrigation Depth ◽  
Use Efficiency

This study evaluated the effect that different irrigation depths have on the growth and crop production of jambu plants. The treatments consisted of five irrigation depths corresponding to 40%, 70%, 100%, 130% and 160% of field capacity. We used randomized blocks with four replications for the experimental design. The plot consisted of four plants in separate pots. For comparison of treatments, at 27 days after transplantation, the following variables were analyzed: plant height, stem diameter, leaf fresh matter, stalk fresh matter, root fresh matter, inflorescence fresh matter, leaf dry matter, stalk dry matter, root dry matter, inflorescence dry matter and water use efficiency. The effect of irrigation depth was significant for the analyzed variables, except for stem diameter and inflorescence dry matter. There was a quadratic behavior of the variables regarding the applied irrigation depths. The maximum values of each parameter were obtained with irrigation depths close to 100% field capacity. Although the efficiency of water use was higher for the irrigation depth of 40% field capacity, the use of irrigation depth at 100% field capacity is recommended since it provided the best answers of the variables analyzed.

scholarly journals Strategies for Improved Yield and Water Use Efficiency of Lettuce (Lactuca sativa L.) through Simplified Soilless Cultivation under Semi-Arid Climate

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1379 ◽  
Author(s):  
Nicola Michelon ◽  
Giuseppina Pennisi ◽  
Nang Ohn Myint ◽  
Giacomo Dall’Olio ◽  
Lucrecia Pacheco Batista ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Nutrient Solution ◽  
Crop Production ◽  
Solution Concentration ◽  
Low Fertility ◽  
Small Areas ◽  
Soil Cultivation ◽  
Use Efficiency ◽  
Soilless Cultivation

Simplified soilless cultivation (SSC) systems have globally spread as growing solutions for low fertility soil regions, low availability of water irrigation, small areas and polluted environments. In the present study, four independent experiments were conducted for assessing the applicability of SSC in the northeast of Brazil (NE-Brazil) and the central dry zone of Myanmar (CDZ-Myanmar). In the first two experiments, the potentiality for lettuce crop production and water use efficiency (WUE) in an SSC system compared to traditional on-soil cultivation was addressed. Then, the definition of how main crop features (cultivar, nutrient solution concentration, system orientation and crop position) within the SSC system affect productivity was evidenced. The adoption of SSC improved yield (+35% and +72%, in NE-Brazil and CDZ-Myanmar) and WUE (7.7 and 2.7 times higher, in NE-Brazil and CDZ-Myanmar) as compared to traditional on-soil cultivation. In NE-Brazil, an eastern orientation of the system enabled achievement of higher yield for some selected lettuce cultivars. Furthermore, in both the considered contexts, a lower concentration of the nutrient solution (1.2 vs. 1.8 dS m−1) and an upper plant position within the SSC system enabled achievement of higher yield and WUE. The experiments validate the applicability of SSC technologies for lettuce cultivation in tropical areas.

Effects of subsoil plastic film mulch on yield and water use of rainfed winter wheat

2018 ◽  
Vol 69 (12) ◽  
pp. 1197
Author(s):  
Zhang Mingming ◽  
Dong Baodi ◽  
Qiao Yunzhou ◽  
Yang Hong ◽  
Wang Yakai ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Crop Production ◽  
Wheat Yield ◽  
Limiting Factor ◽  
Growth Stages ◽  
Plastic Film ◽  
Use Efficiency

Water shortage is a limiting factor to crop production in North China. Mulching is a widely used approach to conserve soil water and improve crop yield. A 2-year field experiment was conducted at the Nanpi Eco-Agricultural Experimental Station of the Chinese Academy of Sciences in 2014–16, in which yields of winter wheat (Triticum aestivum L.) in a treatment with subsoil plastic film mulch were compared with non-mulch. The mulch treatment produced a 16.1% higher grain yield than the non-mulch treatment. The increase in grain yield was primarily due to a 10.1–10.9% increase in number of spikes per m2 and a 4.7–5.1% increase in number of grains per spike. Plants in the mulch treatment showed greater dry matter (DM) accumulation but similar harvest index. Yield improvement did not depend on increasing DM translocation, but was significantly related to DM accumulation at different growth stages. Increased DM accumulation before wintering, from jointing to heading and from anthesis to maturity, enhanced grain yield by promoting increased number of spikes and number of grains per spike. Soil evaporation was lower by 31.1% and transpiration increased by 28.0% in the mulch treatment, resulting in 8.9–9.4% higher water-use efficiency. Our results indicate that a subsoil plastic film mulch can effectively improve winter wheat yield and water-use efficiency under rain-fed conditions.

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