Improvement of Water Use Efficiency in Irrigated Agriculture: A Review

Boutraa, Tahar

doi:10.3923/ja.2010.1.8

Cited by 79 publications

(48 citation statements)

References 16 publications

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“…Vegetative pot analysis included photosynthetic performance index (PI ABS ), biomass weight per pot (total weight of air-dry plants without root) (BWP), harvest index (HI, ratio between grain weight per pot and biomass weight per pot), water use (WU, total water added for each winter barley cultivar from sowing to maturity), grain yield-based water use efficiency (WUE G ) (Viets, 1962;Passioura, 1977;Siddique et al, 1990;Boutraa, 2010;Zhang et al, 2010), and grain yield per pot (GYP).…”

Section: Pot Trial Analysismentioning

confidence: 99%

Photosynthetic performance index in early stage of growth, water use efficiency, and grain yield of winter barley cultivars

Kovačević

Mazur

Lalić

et al. 2015

Chilean J. Agric. Res.

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Repetitive heat and drought stress conditions have a significant impact on quantity and quality of barley (Hordeum vulgare L.) production in most regions of the world. Objective of this study was to determine the relationships between photosynthetic performance index (PI ABS ), water use (WU), grain yield-based water use efficiency (WUE G ), and grain yield per pot (GYP) of winter barley cultivars grown in a pot trial under short-term drought stress conditions and grain yield and its stability from the multi-environmental field trials. Ten winter barley cultivars were examined in two water treatments. One treatment was well watered, while the second treatment was subjected to short-term stress caused by deficiency of water in the stages of full tillering, beginning of heading, and grain filling. PI ABS was measured at full tillering stage while WU, WUE G , and GYP of barley cultivars were estimated after the whole vegetative cycle. Also, multi-environmental field trials with the same winter barley cultivars were carried out during 4 yr (2004)(2005)(2006)(2007)) and 3 yr (2009-2011) with two sowing densities (300 and 450 seeds m -2 ) on multiple locations in the lowland part of the Republic of Croatia. ANOVA showed highly significant (P ≤ 0.001) cultivar effect for all of the examined traits in the pot trial. PI ABS of cultivars in both treatments was in a negative nonsignificant correlation with grain yield and grain yield stability (ecovalence) of the same cultivars in multi-environmental field trials. Winter barley cultivars with higher WU and WUE G also had higher values of grain yield, and harvest index observed on the basis of the pot trial. WU, WUE G , and GYP of 10 barley cultivars in pot trial showed highly positive phenotypic correlation with grain yield of all eight and 10 barley cultivars in the multi-environmental field trials. These results suggests that WU and WUE G could be good indicators for preliminary selection of modern, high yielding, and stable winter barley genotypes which have better water management capabilities.

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Section: Pot Trial Analysismentioning

confidence: 99%

Photosynthetic performance index in early stage of growth, water use efficiency, and grain yield of winter barley cultivars

Kovačević

Mazur

Lalić

et al. 2015

Chilean J. Agric. Res.

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“…Since the groundwater is extracted so massively for all water-related jobs in the absence of little or no recharge, improvement of water use efficiency needs to be introduced (Boutraa, 2010).…”

Section: Recommendationsmentioning

confidence: 99%

Downstream Ecocide From Upstream Water Piracy

Adel¹

2012

American Journal of Environmental Sciences

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Upstream India and downstream Bangladesh share more than 50 international rivers. India has set up water diversion constructions in more than 50% of these rivers, the largest one being on the Bangladesh's northwest upon the Ganges River, puts Bangladesh's Gangetic ecosystem at stake. In some border rivers, India has set up groins on her side of river banks. Also, Indian side pumps Bangladesh river water stealthily from border-rivers. Further, India is constructing another dam and reservoir upstream on the Barak River on the northeast of Bangladesh. Furthermore, India has chalked out a grand plan for river networking. Exploration has been made to assess the degree of the ecosystem degradation both inland and on the coast due to all water diversion constructions around the border, except for the Tipaimukh Dam in which case estimation of projected ecosystem degradation has been mentioned. Finally, Indian grand plan of river networking plan has been briefly touched upon. Site visitations, observations, surveys, measurements and interviews of professionals were made in the project country. Relevant literatures on this issue were reviewed in electronic and print databases. Related published articles in electronic and print media were systematically searched following the key words for the case. Finally, both electronic and print news media have been closely followed to know the latest developments on this issue. The reduced flow of the Ganges in Bangladesh has caused scarcity of fresh water, species endangerment and extinction, obstruction to livestock raising, loss of livelihoods, people's displacement, changes in crop production, reduction in navigable routes, extreme weather, increased flood occurrences, scarcity of potable water, groundwater contamination, reduction in coastal sediment deposition, deterioration of the Ganges water quality and inland intrusion of saline water front. Water diversion constructions in other rivers have caused similar type of ecological problems. The construction of groins on the Indian side of the border rivers has caused bank erosion on the Bangladesh side which changes her map. India benefits herself by occupying the resulting shoal formation within the Bangladesh side of the riverbeds. The Tipaimukh Dam on the Barak River will affect the virgin haor ecosystem the same way as the Ganges basin over a certain time scale. India's river networking plan is going to create a widespread ecocide in the Ganges-Brahmaputra basin. Water, if not the most, is one of the most important components in an ecosystem. Living being cannot survive without it. Ecocide occurs in its absence. Obstruction to the downstream natural flow of rivers by the upstream country unilateral actions is tantamount to violations of human rights which is a crime. With the dilapidated ecosystem, Bangladesh's national security is at stake. Bangladesh's internal immunity is not strong enough to face the threats of climate change events. Bangladesh government should take a tough stand for the country's interests. Sinc...

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“…The results have indicated that amount of water uptake by maize plant depends not only on farming system but also on the genotype (Hansakar, 1996). Considering the high maize grain yield produced by GV 640 in the CF, it means that water use efficiency (WUE) could be highest for GV 640 compared to other two maize genotypes (Tahar, 2010). The lower moisture content in the CF could have been attributed to high water uptake by vigorous growing maize crop (Figure 3 and 4).…”

Section: Soil Moisture Utilizationmentioning

confidence: 99%

Optimizing Soil Moisture and Nitrogen Use Efficiency of Some Maize (Zea mays) Varieties under Conservation Farming System

Simunji¹,

Munyinda²,

Lungu³

et al. 2018

SAR

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In Zambia, small holder farmers depend on producing maize (Zea mays), which is a major staple food for many Zambians. Maize productivity among the smallholder farmers is quite low, giving only 2.3 tons per hectare. The low yields are attributed to insufficient and erratic rain fall, low soil fertility, and poor farming practices. Therefore, the objective of this study was to evaluate the performance of maize genotypes for nitrogen use efficiency and soil moisture utilisation under conservation farming system. The trials were carried out at two sites with different soil types. Three maize varieties i.e. ZMS 606, GV 640 and GV 635 were evaluated in maize -cowpea rotation. Four cowpea varieties used for rotation with maize, i.e. Bubebe Lutembwe, BB 14-16-2-2 and LT 11-3-3-12. BB 14-16-2-2 and LT 11-3-3-12 are mutation-derived lines of Bubebe and Lutembwe cowpea parent varieties respectively. The experimental design used was split plot with three replications. The NUE was significantly (P< 0.05) higher in CF and accounted for 27 % and 15% more than conventional farming system which valued 17% and 3% at Chisamba and Batoka, respectively. while soil moisture content was higher at Batoka than Chisamba in CF system. ZMS 606 and GV 640 varieties were superior over GV 635 for NUE. Cowpea variety BB 14-16-2-2 significantly increased NUE of maize varieties. Therefore, smallholder farmers in Zambia can increase maize productivity in maize -cowpea rotation system due to the increased NUE. Recommendations are made for farmers to select improved nitrogen efficient maize varieties to optimize productivity of maize in conservation farming system.

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Improvement of Water Use Efficiency in Irrigated Agriculture: A Review

Cited by 79 publications

References 16 publications

Photosynthetic performance index in early stage of growth, water use efficiency, and grain yield of winter barley cultivars

Photosynthetic performance index in early stage of growth, water use efficiency, and grain yield of winter barley cultivars

Downstream Ecocide From Upstream Water Piracy

Optimizing Soil Moisture and Nitrogen Use Efficiency of Some Maize (Zea mays) Varieties under Conservation Farming System

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