Grain sorghum response to supplementary irrigations under post-rainy season conditions

Farah, S. M.; Salih, Ahmed Ali; Taha, Ahmed M.; Memon, Zeeshan Ali; Ali, Ihtisham

doi:10.1016/s0378-3774(96)01283-8

Cited by 20 publications

(11 citation statements)

References 17 publications

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“…Indeed, although irrigation led to significant differences in term of ADM max with the highest values for the well irrigated regimes within years, among years the crop response did not result univocal, indicating a strong interaction between year and irrigation. Similar results were obtained by Farah et al (1997) in grain sorghum, with values of ADM oscillating between 3,050 and 2,210 g m -2 , passing from 627 to 498 mm of water supplied in Sudan; lowest ADM was obtained by Farrè & Faci (2006) in Northern Spain, with values of 1,838 g m -2 for 588 mm of evapotranspiration and 522 g m -2 for 274 mm of water used. In limited water supply conditions, typical of Mediterranean environment, biomass sorghum showed a similar or slightly better performance and stability for dry matter accumulation compared with sweet sorghum.…”

Section: Growth Analysissupporting

confidence: 77%

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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Section: Growth Analysissupporting

confidence: 77%

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

Garofalo¹,

Rinaldi²

2013

Span. j. agric. res.

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“…For example, for sweet sorghum ADM varied from 3100 to 1700 g m -2 in Greece (Dercas and Liakatas, 2007) with 680 mm and 450 mm of seasonal ETc respectively, and from 3250 to 3170 g m -2 in a similar environment, with a seasonal ETc equal to 580 and 526 mm. For grain sorghum, Farah et al, (1997) found values of ADM in Sudan oscillating between 3050 g m -2 and 2210 g m -2 , passing from 627 to 498 mm of water supplied; the lowest ADM was obtained by Farrè and Faci (2006) in Northern Spain, with values of 1838 g m -2 for 588 mm of evapotranspiration and 522 g m -2 for 274 mm of water used by sorghum. Habyarimana et al (2004) reported how ADM in biomass sorghum can oscillate between 2900 and 2000 g m -2 in rainfed conditions and from 5100 to 3500 g m -2 in well-watered conditions.…”

Section: Biomass Yieldmentioning

confidence: 93%

Water and radiation use efficiencies of irrigated biomass sorghum in a Mediterranean environment

Garofalo¹,

Vonella²,

Ruggieri³

et al. 2011

Ital J Agronomy

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Biomass sorghum (Sorghum bicolor L. Moench) is a crop that can be used for energy production in the bioethanol chain and a greater knowledge of its potential and response to irrigation water levels could help to assess its potential diffusion in Mediterranean areas. A twoyear field experiment was carried out in Southern Italy; two irrigation regimes were compared in biomass sorghum, optimal watered (irrigation supplies greater than actual crop evapotranspiration, ETc) and stressed watered (about 65% of the optimal one). Growth analysis, soil water content and aboveground dry biomass (ADM) yield at harvest were measured and analyzed. Radiation use efficiency (RUE), irrigation (IWUE) and water use efficiencies (WUE) were also calculated. Seasonal water use ranged from 830 mm in the optimal treatment to 589 mm in the stressed one. Similarly, ADM proved to be statistically different between the two irrigation treatments (34.6 vs 19.8 t of dry matter ha -1 ). The RUE, calculated as the slope of the first order equation between dry biomass and intercepted photosynthetically active radiation along a crop cycle, showed an average of 2.84±0.65 g MJ -1 . No statistical differences for IWUE and WUE were obtained between irrigation regimes (8.22 and 5.87 kg m -3 , on average). The two years of experiment influenced IWUE and WUE (both larger in the rainier growing season), but not the RUE. The high RUE and WUE obtained values confirmed that biomass sorghum is a crop with considerable dry matter production efficiency. The experimental results suggest that the introduction of biomass sorghum in the cropping systems of Mediterranean environments as an alternative crop for energy purposes is feasible, but requires an adequate seasonal irrigation water supply (not less than 500 mm).

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“…Sorghum considered the most important cereal in Sudan is usually planted during July with supplementary irrigation provided throughout the growing season from the Blue Nile. Farah et al (1997) reported that the area annually planted with sorghum is about 2.1 million ha, of which 80% is completely rain fed with the remainder given supplementary irrigation throughout growing seasons.…”

Section: Study Areamentioning

confidence: 99%

Remote Sensing Derived Crop Coefficient for Estimating Crop Water Requirements for Irrigated Sorghum in the Gezira Scheme, Sudan

Bashir

Hata²,

Tanakamaru³

et al. 2007

J ENV INFORM

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ABSTRACT. Improved management of crop water requires accurate scheduling of irrigation which, in turn, requires accurate calculation of actual daily evapotranspiration (ETa). This study was carried out to examine seasonal changes in crop coefficients and evapotranspiration values for sorghum irrigated in the Gezira scheme, with the use of remote sensing data and field measurements. Three methods, namely remote sensing-derived kc, Farbrother kc (experimental) and FAO kc, revealed that the crop coefficient for sorghum reached growing season peaks of approximately 1.15, 1.21, and 1.17, respectively, at the beginning of October. The crop coefficient, derived from remote sensing data, varied over the growing season from 0.62 in the initial growth stage, 1.15 in the mid-season stage to 0.58 at harvest. The total ETc over the growing season of irrigated sorghum estimated by remote sensing-derived kc, experimental kc and FAO kc was 674, 704, and 642 mm, respectively. The ETc by the three methods, combined with the Penman-Monteith reference ET0, was also compared with the actual ET measured by the water balance approach. Statistical analysis showed that the remote sensing-derived kc was superior to the others in all regression parameters. This study demonstrates that remote sensing data are a very useful tool for estimating water requirements for field crops, hence providing irrigation decision makers with information not available before.

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Grain sorghum response to supplementary irrigations under post-rainy season conditions

Cited by 20 publications

References 17 publications

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

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

Water and radiation use efficiencies of irrigated biomass sorghum in a Mediterranean environment

Remote Sensing Derived Crop Coefficient for Estimating Crop Water Requirements for Irrigated Sorghum in the Gezira Scheme, Sudan

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