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Asian Journal of Agricultural Research
  Year: 2013 | Volume: 7 | Issue: 1 | Page No.: 15-25
DOI: 10.3923/ajar.2013.15.25
 
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Variation in Growth Attributes, Dry Matter Yield and Quality Among 6 Genotypes of Napier Grass used for Biomass in Year of Establishment in Southern Kyushu, Japan
Lizah Khairani, Yasuyuki Ishii, Sachiko Idota, Renny Fatmyah Utamy and Aya Nishiwaki

Abstract:
As for estimating the suitability of napier grass for biomass use in southern Kyushu, Japan, the objective of this study was to determine the most suitable genotype of napier grass for dry matter production and quality (fiber content) for biomass ethanol conversion in the year the plants were established. Six genotypes of napier grass, a dwarf early-heading type, a dwarf late-heading type, a hybrid of pearl millet with napier grass, a purple-foliage type and normal varieties of Merkeron and Wruk wona, were examined for growth attributes, dry matter yield, chemical composition and in vitro Dry Matter Digestibility (IVDMD) at the University of Miyazaki in southern Kyushu, Japan in 2009. Dry matter yield ranged from 13.4 to 33.5 Mg ha-1, with the highest yielder being normal Wruk wona, followed by Merkeron. Hemicellulose and cellulose content of both Leaf Blade (LB) and stem inclusive of leaf sheath (ST) did not differ significantly among genotypes, except for cellulose content in ST which was significantly higher for the dwarf early-heading type than for the other genotypes. The dwarf late-heading type had significantly higher IVDMD in ST (65.8%) due to lower acid detergent lignin and cellulose content in ST than the other genotypes. Based on dry matter production, fiber (carbohydrate) content in the current study and theoretical conversion efficiency from cellulose and hemicelluloses of 0.29 and 0.23, respectively, Merkeron appears the most promising genotype for biomass production, with theoretical ethanol production potential of 5850 L ha-1 year-1 in the year of establishment.
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How to cite this article:

Lizah Khairani, Yasuyuki Ishii, Sachiko Idota, Renny Fatmyah Utamy and Aya Nishiwaki, 2013. Variation in Growth Attributes, Dry Matter Yield and Quality Among 6 Genotypes of Napier Grass used for Biomass in Year of Establishment in Southern Kyushu, Japan. Asian Journal of Agricultural Research, 7: 15-25.

DOI: 10.3923/ajar.2013.15.25

URL: https://scialert.net/abstract/?doi=ajar.2013.15.25

 
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