Biogas production from silage maize hybrids

Z. Hegyi, Z. Zsubori-Tóth, J. Pintér, C. Marton

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Experiments have been underway in Martonvásár for many years to develop leafy silage hybrids, which have a greater aboveground mass than conventional silage hybrids. The best hybrids for biogas production would be those that produce a large quantity of biomass and are rich in starch. The chief characteristic of leafy hybrids is that they have more leaves than normal hybrids. Due to this enhanced leaf area above the ear, the vegetative period of leafy genotypes is shorter, while the grain-filling period is longer, which has a positive effect on both yield and grain quality. The results of the present experiment show that during the anaerobic fermentation of the silage, leafy hybrids produced more biogas (640 l per 1000 g dry matter) than conventional hybrids (606 l per 1000 g dry matter). There were no significant differences between the methane contents of the leafy and non-leafy hybrids tested in the experiment. A strong positive correlation was found between biogas yield and the starch content of the silage, and a moderate positive correlation between biogas yield and the sugar content. The correlation between biogas yield and the lignin and protein contents was negative, in accordance with other literary data.

Original languageEnglish
Pages (from-to)223-229
Number of pages7
JournalActa Agronomica Hungarica
Volume59
Issue number3
DOIs
Publication statusPublished - Sep 1 2011

Keywords

  • biogas
  • leafy
  • methane
  • non-leafy
  • quality
  • silage hybrids

ASJC Scopus subject areas

  • Agronomy and Crop Science

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