Evaluation of eastern gamagrass as dual‐purpose complementary bioenergy and forage feedstock to switchgrass
Evaluation of eastern gamagrass as dual‐purpose complementary bioenergy and forage feedstock to switchgrass
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东部加马草作为柳枝稷的双重用途补充生物能源和饲料原料的评价
DOI：
10.1111/gcbb.13054
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发表时间：
2023
期刊：
影响因子：
5.6
通讯作者：
Dzantor, E. Kudjo
中科院分区：
文献类型：
--
作者：
Kieffer, Christina;Hui, Dafeng;Matamala, Roser;Li, Jianwei;Tyler, Donald;Dzantor, E. Kudjo
柳枝草被认为是一种典型的生物能源作物，也是美国传统上用作饲料的暖季型多年生牧草。为了避免生物能源生产完全依赖天然气，需要对其他作物进行评估，以使原料池多样化。我们进行了为期3年的田间试验，评价了东方伽马草(GG)作为补充饲料的另一种东方伽马草(GG)在一割和两割系统中的补充，以及在不同施氮量(N)下，是否与红三叶草或毛豌豆间作。我们的结果表明，在相同的条件下，GG的生物量(29.5%)、理论乙醇势(TEP)和理论乙醇产率(Tey)都低于相应的SG。但饲草品质指标，即酸性洗涤纤维(ADF)、粗蛋白(CP)和元素P、K、Ca、Mg，GG显著高于SG。与不施氮肥处理相比，氮肥显著提高了秸秆生物量(增加1.54 mg ha−1)、木质素含量(增加2.10 g kg−1)和Tey(787.12 L ha−1)。间作大红三叶草或紫云英并不能显著增加未受精小区的WSPGs、TEP和Tey的生物量。本研究表明，GG可以作为SG的补充作物，在农民轮作中可以作为生物能源和饲料的两用作物。
Switchgrass (SG) is considered a model bioenergy crop and a warm‐season perennial grass (WSPG) that traditionally served as forage feedstock in the United States. To avoid the sole dependence on SG for bioenergy production, evaluation of other crops to diversify the pool of feedstock is needed. We conducted a 3‐year field experiment evaluating eastern gamagrass (GG), another WSPG, as complementary feedstock to SG in one‐ and two‐cut systems, with or without intercropping with crimson clover or hairy vetch, and under different nitrogen (N) application rates. Our results showed that GG generally produced lower biomass (by 29.5%), theoretical ethanol potential (TEP, by 2.8%), and theoretical ethanol yield (TEY, by 32.9%) than corresponding SG under the same conditions. However, forage quality measures, namely acid detergent fiber (ADF), crude protein (CP), and elements P, K, Ca, and Mg were significantly higher in GG than those in SG. Nitrogen fertilizer significantly enhanced biomass (by 1.54 Mg ha−1), lignin content (by 2.10 g kg−1), and TEY (787.12 L ha−1) in the WSPGs compared to unfertilized treatments. Intercropping with crimson clover or hairy vetch did not significantly increase biomass of the WSPGs, or TEP and TEY in unfertilized plots. This study demonstrated that GG can serve as a complementary crop to SG and could be used as a dual‐purpose crop for bioenergy and forage feedstock in farmers' rotations.
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DOI：
10.1073/pnas.2101084119
发表时间：
2022-03-01
影响因子：
11.1
作者：
Lark TJ;Hendricks NP;Smith A;Pates N;Spawn-Lee SA;Bougie M;Booth EG;Kucharik CJ;Gibbs HK
通讯作者：
Gibbs HK
边缘土地暖季和冷季草生物质管理：一、产量和土壤肥力状况
影响因子：
3.6
作者：
J. Cherney;Q. Ketterings;M. Davis;D. Cherney;K. Paddock
通讯作者：
K. Paddock
一种用于饲料、保护和生物能源的植物
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
H. Berestycki;A. Zilio
通讯作者：
A. Zilio
柳枝稷的生物量和综合饲料/生物量产量受间作冷季和暖季豆类的影响
影响因子：
3.9
作者：
K. S. Warwick;F. Allen;P. Keyser;A. Ashworth;G. Bates;D. Tyler;P. Lambdin;C. Harper
通讯作者：
C. Harper
常见牧草杂草的营养价值及其与牲畜养分需求的关系
DOI：
--
发表时间：
2019
期刊：
Common Grasses, Legumes and Forbs of the Eastern United States
影响因子：
--
作者：
A. O. Abaye
通讯作者：
A. O. Abaye