Yield, water use efficiency and economic analysis of energy sorghum in South Texas

Enciso, Juan; Jifon, John; Ribera, Luis A.; Zapata, Samuel D.; Ganjegunte, Girisha

doi:10.1016/j.biombioe.2015.07.021

Cited by 29 publications

(20 citation statements)

References 15 publications

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“…Better performance in this parameter in sorghum plants confirms that this cereal is well adapted to situations of low water supply, using available water more efficiently in its metabolic processes (Ajeigbe, Akinseye, Ayuba, & Jonah, ). Increases in water‐use efficiency were observed in sorghum biomass (Enciso, Jifon, Ribera, Zapata, & Ganjegunte, ), saccharine sorghum (Curt, Fernandez, & Martinez, ) and grain sorghum (Jabereldar, Naim, Abdalla, & Dagash, ) in conditions of low water availability. Moreover, Hasan et al (), evaluating the responses of sorghum and maize plants to water deficit, observed a lower tolerance to drought in maize plants, which presented a lower water‐use efficiency, as well as greater growth reductions, relative leaf water content and gas exchange.…”

Section: Discussionmentioning

confidence: 99%

Phenological and physiological evaluation of first and second cropping periods of sorghum and maize crops

Barbosa

Kuki

Bengala

et al. 2019

J Agronomy Crop Science

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Environmental conditions influence phenology and physiological processes of plants. It is common for maize and sorghum to be sown at two different periods: the first cropping (spring/summer) and the second cropping (autumn/winter). The phenological cycle of these crops varies greatly according to the planting season, and it is necessary to characterize the growth and development to facilitate the selection of the species best adapted to the environment. The aim of this study was to characterize phenological phases and physiological parameters in sorghum and maize plants as a function of environmental conditions from the first cropping and second cropping periods. Two parallel experiments were conducted with both crops. The phenological characterization was based on growth analyses (plant height, leaf area and photoassimilate partitioning) and gas exchange evaluations (net assimilation rate, stomatal conductance, transpiration and water‐use efficiency). It was found that the vegetative stage (VS) for sorghum and maize plants was 7 and 21 days, respectively, longer when cultivated during the second cropping. In the first cropping, the plants were taller than in the second cropping, regardless of the crop. The stomatal conductance of sorghum plants fluctuated in the second cropping during the development period, while maize plants showed decreasing linear behaviour. Water‐use efficiency in sorghum plants was higher during the second cropping compared with the first cropping. In maize plants, in the second cropping, the water‐use efficiency showed a slight variation in relation to the first cropping. It was concluded that the environmental conditions as degree‐days, temperature, photoperiod and pluvial precipitation influence the phenology and physiology of both crops during the first and the second cropping periods, specifically cycle duration, plant height, leaf area, net assimilation rate, stomatal conductance and water‐use efficiency, indicating that both crops respond differentially to environmental changes during the growing season.

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Section: Discussionmentioning

confidence: 99%

Phenological and physiological evaluation of first and second cropping periods of sorghum and maize crops

Barbosa

Kuki

Bengala

et al. 2019

J Agronomy Crop Science

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“…Limited water availability associated with climate change may constrain maize yields in rain-fed systems (Ort & Long, 2014), and research demonstrates an increase in the sensitivity of maize to drought, in the rainfed, Midwest US (Lobell et al, 2014). A potential adaptation strategy is to grow productive yet drought tolerant bioethanol feedstocks with high water-use-efficiency (WUE; Enciso et al, 2015), defined as the ratio of cumulative biomass produced to total water lost through evapotranspiration (ET; the sum of transpiration and evaporation). The cellulosic bioethanol goals mandated by the RFS, combined with the projected increase in Midwest climate variability, create the potential for novel cellulosic feedstocks in the rain-fed, US Corn Belt-a region characterized by very high growing-season photosynthetic activity (Guanter et al, 2014), that includes the US states of Iowa, Illinois, and portions of eastern Nebraska, western Indiana, southern Minnesota, and northern Missouri.…”

Section: Introductionmentioning

confidence: 99%

Biomass sorghum and maize have similar water-use-efficiency under non-drought conditions in the rain-fed Midwest U.S.

Roby

Fernandez

Heaton

et al. 2017

Agricultural and Forest Meteorology

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“…The economic model proposed by Enciso, Jifon [14] was used to estimate the expected net returns associated with producing ethanol from the two sorghum cultivars in question under arid and semiarid environments. Namely, the net return of the ith feedstock in the jth environment is given by:…”

Section: Economic Analysismentioning

confidence: 99%

Energy Sorghum Production under Arid and Semi-Arid Environments of Texas

Enciso¹,

Chávez

Ganjegunte³

et al. 2019

Water

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Water availability and supply are critical factors in the production of bioenergy. Dry biomass productivity and water use efficiency (WUE) of two biomass sorghum cultivars (Sorghum bicolor (L.) Moench) were studied in two different climatic locations during 2014 and 2015. The objective of this field study was to evaluate the dry biomass productivity and water use efficiency of two energy sorghum cultivars grown in two different climatic environments: one at Pecos located in the Chihuahuan Desert and a second one located at Weslaco in the Lower Rio Grande bordering Mexico and with a semiarid environment. There were significant differences between locations in dry biomass and WUE. Dry biomass productivity ranged from 22.4 to 31.9 Mg ha−1 in Weslaco, while in Pecos it ranged from 7.4 to 17.6 Mg ha−1. Even though it was possible to produce energy sorghum biomass in an arid environment with saline-sodic soils and saline irrigation, the energy sorghum dry biomass yield was reduced more than 50% in the arid environment compared to production in a semiarid environment with good soil and water quality, and it required approximately twice as much water. Harsh production conditions combined with low energy prices resulted in negative net returns for all treatments. However, a moderate increase in ethanol price could make the semiarid cropland of Texas an economically feasible feedstock production location.

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Yield, water use efficiency and economic analysis of energy sorghum in South Texas

Cited by 29 publications

References 15 publications

Phenological and physiological evaluation of first and second cropping periods of sorghum and maize crops

Phenological and physiological evaluation of first and second cropping periods of sorghum and maize crops

Biomass sorghum and maize have similar water-use-efficiency under non-drought conditions in the rain-fed Midwest U.S.

Energy Sorghum Production under Arid and Semi-Arid Environments of Texas

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