Journal article Open Access

The Impact of Soil Water Content on Yield, Composition, Energy, and Water Indicators of the Bioenergy Grass Saccharum spontaneum ssp. aegyptiacum under Three-Growing Seasons

Scordia, D.; Calcagno, S.; Piccitto, A.; Cristina Patanè


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{
  "inLanguage": {
    "alternateName": "eng", 
    "@type": "Language", 
    "name": "English"
  }, 
  "description": "<p>Raising water and energy productivity in agriculture can contribute to reducing the pressure&nbsp;on the limited freshwater availability and non-renewable energy sources. Bioenergy perennial grasses&nbsp;are ecient from a water perspective and can a ord a low-energy cultivation system; however, crop&nbsp;selection and cultivation practices for minimizing land use change and maximizing resource use<br>\neciencies remain a challenging task in view of sustainable bioeconomy development. The present&nbsp;work investigated the soil water e ect on a long-term plantation of Saccharum (Saccharum spontaneum&nbsp;ssp. aegyptiacum), a bioenergy perennial grass holding great promise for semiarid Mediterranean&nbsp;areas. The plantation was in its 13th year following establishment and was subjected to three levels of&nbsp;irrigation for three successive growing seasons. Regression models between crop water use (CWU)&nbsp;and productivity, biomass composition, energy, and water indicators showed di erent prediction&nbsp;curves. Raising CWU (from 230 to 920 mm) enhanced the dry biomass yield (from 14.8 to 30.1 Mg&nbsp;ha<sup>-1</sup>) and the net energy value (from 257.6 to 511 GJ ha<sup>-1</sup>). On the same CWU range, unirrigated&nbsp;crops improved the energy eciency (from 99.8 to 58.5 GJ ha\udbc0\udc001), the energy productivity (from 5.6&nbsp;to 3.4 Mg GJ<sup>-1</sup>) and the water productivity (from 114.5 to 56.1 MJ m\udbc0\udc003) by reducing the water&nbsp;footprint (from 8.7 to 17.8 m3 GJ<sup>-1</sup>). Biomass composition was also superior in unirrigated crops,&nbsp;as the lower heating value, structural polysaccharides, and the acid detergent lignin were higher,<br>\nwhile ash and soluble compounds were lower. Present findings demonstrated the good yield levels&nbsp;and persistence of Saccharum, improving our knowledge of plant responses to changing soil water&nbsp;availability to maximize energy and conserve natural resources, paving the way for sustainable&nbsp;bioeconomy development in the Mediterranean area.</p>", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "@id": "https://orcid.org/0000-0002-3822-788X", 
      "@type": "Person", 
      "name": "Scordia, D."
    }, 
    {
      "@type": "Person", 
      "name": "Calcagno, S."
    }, 
    {
      "@type": "Person", 
      "name": "Piccitto, A."
    }, 
    {
      "@id": "https://orcid.org/0000-0002-4967-8619", 
      "@type": "Person", 
      "name": "Cristina Patan\u00e8"
    }
  ], 
  "headline": "The Impact of Soil Water Content on Yield, Composition, Energy, and Water Indicators of the Bioenergy Grass Saccharum spontaneum ssp. aegyptiacum under Three-Growing Seasons", 
  "image": "https://zenodo.org/static/img/logos/zenodo-gradient-round.svg", 
  "datePublished": "2020-07-30", 
  "url": "https://zenodo.org/record/4032379", 
  "version": "V1", 
  "keywords": [
    "dryness", 
    "perennial grass;", 
    "energy productivity;", 
    "water footprint;", 
    "mediterranean"
  ], 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.3390/agronomy10081105", 
  "@id": "https://doi.org/10.3390/agronomy10081105", 
  "@type": "ScholarlyArticle", 
  "name": "The Impact of Soil Water Content on Yield, Composition, Energy, and Water Indicators of the Bioenergy Grass Saccharum spontaneum ssp. aegyptiacum under Three-Growing Seasons"
}
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