Water Use Efficiency

Stanhill, G.

doi:10.1016/s0065-2113(08)60465-4

Cited by 206 publications

(118 citation statements)

References 31 publications

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“…The distribution of rainfall during the growing season was poor in the first sowing date treatment, especially at the late vegetative stages. Thus, WUE is affected by the distribution of water application (Stanhill, 1986). Also, the second sowing date treatment had similar WUE to the higher density treatment and the north-south row treatment in all cropping systems, even though there was different plant densities between them.…”

Section: Water-use Efficiencymentioning

confidence: 84%

Productivity of maize-bean intercropping in a semi-arid region of South Africa

Tsubo¹,

Mukhala²,

Ogindo³

et al. 2004

WSA

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Food shortage is known to have been caused by overpopulation, natural disasters and poor food distribution. In areas facing food insecurity, such as Africa, peasants or small-scale farmers have practised intercropping since old times. In this study, an investigation was carried out to determine whether intercropping increased production for small-scale farming in a semi-arid region (Free State, South Africa). Crop productivity of maize and bean intercropping systems was evaluated in terms of crop yield and growth. The effect of radiation and water utilisation by these systems was measured to determine their productivity. Field trials were carried out during three summer crop growing seasons (plant densities, row orientation and sowing date trials. In all growing seasons, rainfall was below normal, and air temperatures were normal. The total land equivalent ratios for yield and growth ranged between 1.06 to 1.58 and 1.38 to 1.86 respectively, showing yield and growth advantage of intercropping. Concerning radiation and water use, the intercropping of maize and beans had both radiation and water use efficiencies (RUE and WUE, respectively) as high as maize sole cropping, and intercropping RUE and WUE were greater than bean sole cropping. From these results, it has been concluded that maize-bean intercropping can be recommended to small-scale farmers in this semi-arid region.

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Section: Water-use Efficiencymentioning

confidence: 84%

Productivity of maize-bean intercropping in a semi-arid region of South Africa

Tsubo¹,

Mukhala²,

Ogindo³

et al. 2004

WSA

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“…In fact, as reported by Hsiao (1993) and Hsiao & Bradford (1983), a correlation between above ground dry plant matter (ADM) and water use (WU) tends to remain linear (and so, simple to be applied) in both well-watered and water deficit conditions. Moreover, WUE seems to be influenced only by plant water status regardless of soil nutrient status (Stanhill, 1986).…”

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confidence: 97%

Water-use efficiency of irrigated biomass sorghum in a Mediterranean environment

Garofalo¹,

Rinaldi²

2013

Span. j. agric. res.

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A large interest is currently addressed to the no-food crops as an alternative source of energy. One of these crops is the biomass sorghum (Sorghum bicolor L. Moench) thanks to its high biomass productivity and high use efficiency of solar radiation and water. Aim of the research is assess the biomass sorghum response to the water in the Mediterranean environment. Biomass sorghum was subjected to four irrigation regimes, at 50, 75, 100 and 125% of ETc for three years (2008, 2009 and 2010). Water use efficiency (WUE), irrigation water use efficiency (IWUE) and water stress index (WSI) were calculated. Plant dry matter and green area index resulted different among the three years and the differences among irrigation treatments were more evident in 2009. The different soil water content at sowing among the three experimental years, affected the growth path during the growing crop cycle, explaining differences in term of biomass accumulation, leaf expansion and water consumption. WUE was higher in 2009 than in 2008 and 2010 with no differences among irrigation treatments for the first and third experimental year. WU ranged between 891 and 566 mm, the aboveground dry matter biomass between 4097 and 1825 g m-2 and WUE between 8.49 and 4.00 kg m-3. IWUE, similarly to WUE, was higher in the second year than in the first and third year, but with differences among irrigation treatments in the 2008 and 2010. WUE calculated from WU normalized with VPD gave a more stable parameter in the three years. This research showed the suitability of biomass sorghum as energy crop in Mediterranean environment and its ability to use water efficiently.

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“…In some regions, the availability of water for irrigation is decreasing and the supply of water may disappear altogether (National Research Council, 1989). Thus, many efforts are being made to increase irrigation efficiency by improving irrigation scheduling and by use of indicators of successful irrigation (e.g., Ehrler, 1973;Jackson et al, 1981;Fiscus et al, 1984;Proffi tt et al, 1985;Stanhill, 1986;Cohen, 1988;Oweis et al, 2000;Sato et al, 2006).…”

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confidence: 99%