Water use of sorghum (&lt;i&gt;Sorghum bicolor&lt;/i&gt; L. Moench) in response to varying planting dates evaluated under rainfed conditions

Hadebe, Sandile T.; Mabhaudhi, Tafadzwanashe; Modi, Albert T.

doi:10.4314/wsa.v43i1.12

Cited by 22 publications

(16 citation statements)

References 18 publications

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“…Sorghum is another drought-tolerant crop, which is mostly attributed to its dense and prolific root system, ability to maintain relatively high levels of stomatal conductance, maintenance of internal tissue water potential through osmotic adjustment, and phenological plasticity [111]. Furthermore, millet is already grown in the various tropical countries of Asia, Africa, and to a lesser extent South America (Figure 1).…”

Section: Increasing the Cultivation Area Of Tolerant Cereal Cropsmentioning

confidence: 99%

Effect of Climate Change on the Yield of Cereal Crops: A Review

Jin

Vanga

Saxena

et al. 2018

Climate

245

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By the end of this century, the average global temperature is predicted to rise due to the increasing release of greenhouse gases (GHGs) into the atmosphere. This change in climate can reduce agricultural yields, resulting in food insecurity. However, agricultural activities are one of the major contributors of GHGs and lower yields can trigger increased activity to meet the demand for food, resulting in higher quantities of GHGs released into the atmosphere. In this paper, we discuss the growth requirements and greenhouse gas release potential of staple cereal crops and assess the impact of climate change on their yields. Potential solutions for minimizing the influence of climate change on crop productivity are discussed. These include breeding to obtain cereals that are more tolerant to conditions caused by climate change, increased production of these new cultivars, improved irrigation, and more effective use of fertilizers. Furthermore, different predictive models inferred that climate change would reduce production of major cereal crops, except for millets due to their ability to grow in variable climatic conditions, and in dry areas due to a strong root system. Moreover, millets are not resource-intensive crops and release fewer greenhouse gases compared to other cereals. Therefore, in addition to addressing food security, millets have an enormous potential use for reducing the impact of agriculture on global warming and should be grown on a global scale as an alternative to major cereals and grains.

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Section: Increasing the Cultivation Area Of Tolerant Cereal Cropsmentioning

confidence: 99%

Effect of Climate Change on the Yield of Cereal Crops: A Review

Jin

Vanga

Saxena

et al. 2018

Climate

245

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“…Daily minimum and maximum temperature, rainfall and reference evapotranspiration were collected weather station records ( Figure 1). Soil physical and hydraulic properties were obtained from a previous classification and characterization of experimental site soils by [19]. These included volumetric water content at field capacity, permanent wilting point, saturation, as well as saturated hydraulic conductivity and soil depth ( Table 2).…”

Section: Atmospheric Data and Soil Characterizationmentioning

confidence: 99%

“…Soil water content was measured weekly from sowing to physiological maturity using a PR2/6 profile probe (Delta-T, Cambridge, UK). Weekly measurements of soil water content (SWC) were used to compute the soil water balance for rainfed trials [8] as follows: Soil physical and hydraulic properties were obtained from a previous classification and characterization of experimental site soils by [19]. These included volumetric water content at field capacity, permanent wilting point, saturation, as well as saturated hydraulic conductivity and soil depth ( Table 2).…”

Section: Grain Yield Water Use and Crop Water Productivitymentioning

confidence: 99%

Assessing Suitability of Sorghum to Alleviate Sub-Saharan Nutritional Deficiencies through the Nutritional Water Productivity Index in Semi-Arid Regions

Hadebe

Modi

Mabhaudhi

2021

Foods

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Lack of cereal nutritional water productivity (NWP) information disadvantages linkages of nutrition to water–food nexus as staple food crops in Sub-Saharan Africa (SSA). This study determined the suitability of sorghum (Sorghum bicolor L. Moench) genotypes to alleviate protein, Zn and Fe deficiency under water-scarce dryland conditions through evaluation of NWP. Sorghum genotypes (Macia, Ujiba, PAN8816, IsiZulu) NWP was quantified from three planting seasons for various sorghum seed nutrients under dryland semi-arid conditions. Seasons by genotypes interaction highly and significantly affected NWPStarch, Ca, Cu, Fe, and significantly affected NWPMg, K, Na, P, Zn. Genotypic variations highly and significantly affected sorghum NWPProtein, Mn. Macia exhibited statistically superior NWPprotein (13.2–14.6 kg·m−3) and NWPZn (2.0–2.6 g·m−3) compared to other tested genotypes, while Macia NWPFe (2.6–2.7 g·m−3) was considerably inferior to that of Ujiba and IsiZulu landraces under increased water scarcity. Excellent overall NWPprotein, Fe and Zn under water scarcity make Macia a well-rounded genotype suitable to alleviating food and nutritional insecurity challenges in semi-arid SSA; however, landraces are viable alternatives with limited NWPprotein and Zn penalty under water-limited conditions. These results underline genotype selection as a vital tool in improving “nutrition per drop” in semi-arid regions.

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“…Embora não tenha sido verificado efeito das lâminas na matéria seca final do sorgo, percebeu-se que o sorgo apresentou maior rendimento na lâmina de 50%.ET 0 , o que implicou pouco efeito na eficiência do uso da água pela cultura. Este resultado confirma a habilidade do sorgo em se desenvolver em uma ampla faixa de ambientes hídricos (Hadebe et al, 2017). Bell et al (2015) citam que o sorgo possui bom rendimento produtivo, mesmo sob condições de déficit hídrico, por causa da sua capacidade de manter a eficiência do uso da água.…”

Section: Bfvtunclassified

“…Além dos efeitos sobre a dinâmica de crescimento das culturas, o déficit hídrico afeta o consumo de água pela cultura e, logo, a sua eficiência no uso da água (Hadebe et al, 2017). Bell et al (2015) citam que o sorgo possui bom rendimento produtivo, mesmo sob condições de déficit hídrico, por causa da sua capacidade de manter a eficiência do uso da água.…”

Section: Introductionunclassified

Crescimento e eficiência do uso da água do sorgo sob distintos regimes hídricos contínuos.

et al. 2020

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A avaliação do crescimento permite melhorar a compreensão da resposta da planta as condições de estresse. Objetivou-se avaliar a resposta do crescimento, acúmulo de biomassa e da eficiência do uso da água do sorgo a diferentes regimes hídricos continuados com água salina. O experimento foi conduzido em Serra Talhada, Pernambuco, Brasil. O sorgo, cv. Sudão IPA 4202, foi semeado em vasos em um viveiro. As plantas foram dispostas em delineamento inteiramente ao acaso submetidas a quatro regimes hídricos durante todo o ciclo com base na evapotranspiração de referência (ET0) (125%, 100%, 75% e 50%.ET0), com 32 repetições. Ao longo do tempo foram coletados dados de biometria, biomassa de forragem e consumo de água da cultura. A planta foi fracionada e seus componentes foram mensurados. Os índices morfofisiológicos foram obtidos. Não houve efeito de regime hídrico na maioria das variáveis de crescimento, acúmulo e partição de matéria seca. A eficiência do uso da água foi mantida, mesmo com a redução no consumo de água pela cultura. As mudanças no aparecimento e na senescência foliar não alteraram os índices morfofisiológicos, sugerindo manutenção da taxa fotossintética da cultura nas distintas disponibilidades de água. Conclui-se que, o sorgo, cv. Sudão IPA 4202, possui alta adaptação a ambientes de cultivo com ampla variação de regime hídrico, recomendando-se lâmina de 50%.ET0.

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Water use of sorghum (<i>Sorghum bicolor</i> L. Moench) in response to varying planting dates evaluated under rainfed conditions

Cited by 22 publications

References 18 publications

Effect of Climate Change on the Yield of Cereal Crops: A Review

Effect of Climate Change on the Yield of Cereal Crops: A Review

Assessing Suitability of Sorghum to Alleviate Sub-Saharan Nutritional Deficiencies through the Nutritional Water Productivity Index in Semi-Arid Regions

Crescimento e eficiência do uso da água do sorgo sob distintos regimes hídricos contínuos.

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