Chemical composition and methane yield of maize hybrids with contrasting maturity
Abstract
Maize (Zea mays L.) is the most important substrate for biogas production in Germany. This study was conducted to determine the influence of harvest date and hybrid maturity on the yield and quality of maize biomass for anaerobic methane production. In 2004 and 2005, maize hybrids of widely contrasting maturity were grown on a loamy sand soil (Haplic Luvisol) near Braunschweig, Germany. Whole-plant yield was determined several times after female flowering and the biomass analysed for nutrient composition. The specific methane yield (SMY) was measured using 20l batch digesters. In both experimental years, the late energy maize prototypes had a lower concentration of fat and protein, but higher concentration of ash, detergent fibre, and lignin as compared with the climatically adapted medium-early hybrids. Despite substantially different nutrient concentration among the maize hybrids, no clear-cut association existed between chemical composition and specific methane yield. Contrary to the medium-early hybrids, the late hybrids attained both maximum specific methane yield and maximum methane hectare yields at the final harvest date. In the very long growing season of 2004, the highest individual methane yield of 9370Nm³ ha⁻¹ was obtained by the hybrid with the latest maturity used in the study. It appears that late energy maize, which can take full advantage of the growing season, is better suited for biogas production, provided that the whole-plant dry matter concentration is high enough to produce good quality silage.
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Raw material was characterised by high ODM content, and low fat and fibre content as typically found for maize whole crop biomass.
“Raw material was characterised by high ODM content, and low fat and fibre content as typically found for maize whole crop biomass (Schittenhelm, 2008).”
From Improving aerobic stability and biogas production of maize silage using silage additives (2015) · cites this paper as Schittenhelm, 2008
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- Authors
- Schittenhelm, S.
- Affiliations
- Julius Kühn-Institut (DE)
- Corresponding author
- Schittenhelm, Siegfried
- Venue
- European Journal of Agronomy
- Publisher
- Elsevier BV
- Published
- 2008-08
- Volume
- 29
- Issue
- 2-3
- Pages
- 72-79
- ISSN
- 1161-0301 (ISSN-L)
- OpenAlex
- W2005747019
- Cited by
- 119
- References
- 21
- Citations by year
- 2025: 3 · 2024: 4 · 2023: 4 · 2022: 1 · 2021: 3 · 2020: 7 · 2019: 5 · 2018: 6 · 2017: 7 · 2016: 7 · 2015: 9 · 2014: 10 · 2013: 14 · 2012: 13
- FWCI
- 23.40
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- European Journal of Agronomy (publishedVersion)
- OpenAgrar (submittedVersion)
- Topics
- Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Bioenergy crop production and management
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Crop Yield and Soil Fertility
- Keywords
- maize hybrids, hybrid maturity, biogas production, anaerobic digestion, methane yield, biomass composition, harvest time, lignin, protein and fat content, Haplic Luvisol
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