@article{oai:miyazaki-u.repo.nii.ac.jp:00003222,
 author = {レングシリクル, カニカ and タッツィー, サヤン and Sugimoto, Yasuhiro and 杉本, 安寛 and 井戸田, 幸子 and Idota, Sachiko and 石井, 康之 and Ishii, Yasuyuki and Rengsirikul, Kannika and Tudsri, Sayan},
 journal = {宮崎大学農学部研究報告, Bulletin of the Faculty of Agriculture University of Miyazaki},
 month = {Feb},
 note = {Dwarf napiergrass (Pennisetum purpureum Schumach) is a promising C4 species as a bio-energy crop. This study investigated the effects of nitrogen (N) fertilizer sources on the dry matter production and energy efficiency of pot-cultured napiergrass from May to September 2010. The treatments were three types of organic sources (Manure, Solid-DEM and Legume), chemical fertilizer (Chemical) and the control (No-fertilizer). Manure, Solid-DEM and Legume treatments applied a single dosage (10 g N pot-1) of commercial cattle manure, solid-digested effluent of swine manure and dried ground clippings of greenleaf desmodium (Desmodium intortum, Legume), respectively. Chemical treatment applied the same N rate in four equally split amounts at monthly intervals. Energy input as labor for cultivation plus fertilizer was highest in Chemical (222 MJ m-2), followed by the three organic fertilizer treatments (207 MJ m-2) and No-fertilizer (184 MJ m-2). Annual dry matter yield and energy output were highest in Chemical (623 g m-2 and 9.6 MJ m-2) and Legume (612 g m-2 and 9.4 MJ m-2) , followed by Manure (552 g m-2 and 8.5 MJ m-2) , Solid-DEM (540 g m-2 and 8.3 MJ m-2) and No-fertilizer (20 g m-2 and 0.3 MJ m-2). As a result, the energy efficiency was highest in Legume (4.6%), followed by Chemical (4.3%), Manure (4.1%), Solid-DEM (4.0%) and No-fertilizer (0.2%). The results suggest that using self-supplied legume clippings as an N source is advantageous in the cultivation of dwarf napiergrass, because it requires less input in energy and is as productive as chemical fertilizer supply., 矮性ネピアグラスはバイオエネルギー作物として有望なC4植物種である. 本研究では窒素肥料源が本草種のポット栽培下での乾物生産とエネルギー効率に及ぼす影響を2010年5～9月に検討した. 処理としては,3種の有機質肥料区,すなわち市販家畜堆肥(堆肥),固形有機発酵消化液(固形DEM),乾燥し粉砕したグリーンリーフデスモディウム乾草(マメ科草)を基肥としてポット当たり各々年間10gN施用した区,慣行法として4回に分施した化成肥料を年間同N量施用した化成区および対照として無施肥区を設けた. 栽培に係る労働力と肥料に基づくエネルギー投入量は化成区(222MJm-2)で最も高く,次いで3種の有機肥料区(207MJm-2),無施肥区(184MJm-2) の順となった. ネピアグラスの年間乾物収量およびエネルギー産出量は化成区(623gm-2, 9.6MJm-2)とマメ科草(612gm-2, 9.4MJm-2) で最も高く,次いで堆肥区(552gm-2, 8.5MJm-2),固形DEM区(540gm-2, 8.3MJm-2) の順であり,無施肥区(20gm-2, 0.3MJm-2)で最も低くなった. したがって,エネルギー効率は,マメ科草区(4.6%)で最も高く,化成区(4.3%),堆肥区(4.1%),固形DEM区(4.0%),無施肥区(0.2%)の順となった.本研究から,自給マメ科乾草をN源として用いることは,矮性ネピアグラス栽培にとってエネルギー投入量を削減し,化成肥料施用と同等の生産性を維持できることから有益であると推察された.},
 pages = {69--77},
 title = {Dry Matter Production and Energy Efficiency of Dwarf Napiergrass (Pennisetum purpureum Schumach) under Supply of Animal Manures, Legume Clippings and Chemical Fertilizer},
 volume = {58},
 year = {2012},
 yomi = {レングシリクル, カニカ and タッツィー, サヤン and スギモト, ヤスヒロ and イドタ, サチコ and イシイ, ヤスユキ}
}