Characterization of sweet, fibre and biomass sorghum potential in Portugal as an industrial and energy feedstock

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The purpose of this work was to investigate the influence of crop management on the sorghum biomass quality and productivity, in Portugal, in order to access its potential as an industrial and energy feedstock. To do so, the effects of different fertilization levels, the sowing date and the harvest date in the biomass quality and productivity, were studied. Productivity was affected by the level of nitrogen and by the sowing date. Highest productivities were obtained in the most N-fertilised fields and in fields sowed between 251hM arch and 1'' May. Among subspecies, Sweet and Biomass Sorghum presented, globally, higher productivities than Fibre Sorghum. In all the experimental years, highest productivities, in all the fields, were achieved at 193 5 9 days after sowing, regardless of all the different sowing dates. Biomass quality was affected by the crop productivities. Fields with lowest productivities resulted in a biomass with a higher nitrogen and ash contents, namely the fields sowed at 2nd June and the fields without N-fertiliser. In the experimental conditions at Caparica, sweet sorghum crop showed a better potential as an industrial and energy feedstock, and to get better results, economically and environmentally, fields should he sowed between 25‘h March and 1'’ May, with a high nitrogen input (120 kg N/ha).

Original languageEnglish
Title of host publication2004 New and Renewable Energy Technologies for Sustainable Development
EditorsMaria da Graça Carvalho, Naim Hamdia Afgan
Place of PublicationSingapore
PublisherWorld Scientific Publishing Co
Pages183-192
Number of pages10
ISBN (Electronic)9789812707437
ISBN (Print)978-981-270-505-1, 981-270-505-8
DOIs
Publication statusPublished - 1 Jan 2007
Event2004 New and Renewable Energy Technologies for Sustainable Development - Évora, Portugal
Duration: 28 Jun 20041 Jul 2004

Conference

Conference2004 New and Renewable Energy Technologies for Sustainable Development
CountryPortugal
CityÉvora
Period28/06/041/07/04

Keywords

  • Biomass
  • Crops
  • Feedstocks
  • Nitrogen

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