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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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      <creatorName>Scordia, D.</creatorName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="">0000-0002-3822-788X</nameIdentifier>
      <creatorName>Calcagno, S.</creatorName>
      <creatorName>Piccitto, A.</creatorName>
      <creatorName>Cristina Patanè</creatorName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="">0000-0002-4967-8619</nameIdentifier>
    <title>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</title>
    <subject>perennial grass;</subject>
    <subject>energy productivity;</subject>
    <subject>water footprint;</subject>
    <date dateType="Issued">2020-07-30</date>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
    <alternateIdentifier alternateIdentifierType="url"></alternateIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.3390/agronomy10081105</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf"></relatedIdentifier>
    <rights rightsURI="">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
    <description descriptionType="Abstract">&lt;p&gt;Raising water and energy productivity in agriculture can contribute to reducing the pressure&amp;nbsp;on the limited freshwater availability and non-renewable energy sources. Bioenergy perennial grasses&amp;nbsp;are ecient from a water perspective and can a ord a low-energy cultivation system; however, crop&amp;nbsp;selection and cultivation practices for minimizing land use change and maximizing resource use&lt;br&gt;
eciencies remain a challenging task in view of sustainable bioeconomy development. The present&amp;nbsp;work investigated the soil water e ect on a long-term plantation of Saccharum (Saccharum spontaneum&amp;nbsp;ssp. aegyptiacum), a bioenergy perennial grass holding great promise for semiarid Mediterranean&amp;nbsp;areas. The plantation was in its 13th year following establishment and was subjected to three levels of&amp;nbsp;irrigation for three successive growing seasons. Regression models between crop water use (CWU)&amp;nbsp;and productivity, biomass composition, energy, and water indicators showed di erent prediction&amp;nbsp;curves. Raising CWU (from 230 to 920 mm) enhanced the dry biomass yield (from 14.8 to 30.1 Mg&amp;nbsp;ha&lt;sup&gt;-1&lt;/sup&gt;) and the net energy value (from 257.6 to 511 GJ ha&lt;sup&gt;-1&lt;/sup&gt;). On the same CWU range, unirrigated&amp;nbsp;crops improved the energy eciency (from 99.8 to 58.5 GJ ha􀀀1), the energy productivity (from 5.6&amp;nbsp;to 3.4 Mg GJ&lt;sup&gt;-1&lt;/sup&gt;) and the water productivity (from 114.5 to 56.1 MJ m􀀀3) by reducing the water&amp;nbsp;footprint (from 8.7 to 17.8 m3 GJ&lt;sup&gt;-1&lt;/sup&gt;). Biomass composition was also superior in unirrigated crops,&amp;nbsp;as the lower heating value, structural polysaccharides, and the acid detergent lignin were higher,&lt;br&gt;
while ash and soluble compounds were lower. Present findings demonstrated the good yield levels&amp;nbsp;and persistence of Saccharum, improving our knowledge of plant responses to changing soil water&amp;nbsp;availability to maximize energy and conserve natural resources, paving the way for sustainable&amp;nbsp;bioeconomy development in the Mediterranean area.&lt;/p&gt;</description>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/501100000780</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/H2020/727698/">727698</awardNumber>
      <awardTitle>Marginal lands for Growing Industrial Crops: Turning a burden into an opportunity</awardTitle>
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