Huang Lan, Yu Ping, Gu Mengmeng. Evaluation of Biochar and Compost Mixes as Substitutes to a Commercial Propagation Mix. APPLIED SCIENCES-BASEL. OCT 2019. DOI: 10.3390/app9204394
来源：APPLIED SCIENCES-BASEL 发布时间：2019-12-13 作者：黄兰（第一作者） 点击数：
|作者: Huang, L (Huang, Lan); Yu, P (Yu, Ping); Gu, MM (Gu, Mengmeng)|
|摘要: The effects of biochar (BC) on seed propagation depend on the type of BC, BC incorporation rate, base substrate, and plant seed species. Limited research tested BC-compost mixes for seed propagation. High percentages (70% or 80%, by volume) of BC with vermicompost (VC) or chicken manure compost (CM) were evaluated to substitute a commercial propagation mix (control) in three experiments. Seeds, including basil, coleus, edamame, marigold, okra, petunia, radish, salvia, tomato, vinca, and zinnia in Experiments 1 and 2 had similar or higher emergence percentages (EPs) and emergence indexes (EIs) in both BC:VC mixes, while celosia, cowpea, corn, and pumpkin had lower EPs or EIs in either 8BC:2VC or 7BC:3VC mixes compared to the control. Seedling fresh weights in both BC:VC mixes were similar to the control except for vinca, pumpkin, marigold, and salvia. The BC:VC mixes had no negative effects on plant dry weights at 7 weeks after transplanting. In Experiment 3, BC:CM mixes suppressed the seed germination or seedling growth of coleus, corn, cowpea, marigold, petunia, pumpkin, radish, salvia, vinca, watermelon, and zinnia due to high pH and CM's high electrical conductivity. Therefore, 7BC:3VC and 8BC:2VC can be used as seed propagation mix, while 7BC:3CM and 8BC:2CM are not recommended.|
|作者关键词: biochar; germination; propagation mix; vermicompost; chicken manure compost|
|KeyWords Plus: SEED-GERMINATION; GROWTH; SOIL; SUBSTRATE; SUSTAINABILITY; NITROGEN; WASTE; MEDIA|
|地址: [Huang, Lan] Chinese Acad Agr Sci, Inst Urban Agr, Chengdu 610000, Sichuan, Peoples R China.
[Yu, Ping] Texas A&M Univ, Dept Hort Sci, College Stn, TX 77843 USA.
[Gu, Mengmeng] Texas A&M AgriLife Extens Serv, Dept Hort Sci, College Stn, TX 77843 USA.
|通讯作者地址: Gu, MM (通讯作者)，Texas A&M AgriLife Extens Serv, Dept Hort Sci, College Stn, TX 77843 USA.|
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|Web of Science 类别: Chemistry, Multidisciplinary; Materials Science, Multidisciplinary; Physics, Applied|
|研究方向: Chemistry; Materials Science; Physics|