当前位置: X-MOL 学术Microb. Biotechnol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Storage, fertilization and cost properties highlight the potential of dried microbial biomass as organic fertilizer.
Microbial Biotechnology ( IF 5.7 ) Pub Date : 2020-03-16 , DOI: 10.1111/1751-7915.13554
Janne Spanoghe 1 , Oliver Grunert 2 , Eva Wambacq 3 , Myrsini Sakarika 1 , Gustavo Papini 1 , Abbas Alloul 1 , Marc Spiller 1 , Veerle Derycke 3 , Lutgart Stragier 4 , Harmien Verstraete 4 , Koen Fauconnier 5 , Willy Verstraete 4, 6 , Geert Haesaert 3 , Siegfried E Vlaeminck 1
Affiliation  

The transition to sustainable agriculture and horticulture is a societal challenge of global importance. Fertilization with a minimum impact on the environment can facilitate this. Organic fertilizers can play an important role, given their typical release pattern and production through resource recovery. Microbial fertilizers (MFs) constitute an emerging class of organic fertilizers and consist of dried microbial biomass, for instance produced on effluents from the food and beverage industry. In this study, three groups of organisms were tested as MFs: a high‐rate consortium aerobic bacteria (CAB), the microalga Arthrospira platensis (‘Spirulina’) and a purple non‐sulfur bacterium (PNSB) Rhodobacter sp. During storage as dry products, the MFs showed light hygroscopic activity, but the mineral and organic fractions remained stable over a storage period of 91 days. For biological tests, a reference organic fertilizer (ROF) was used as positive control, and a commercial organic growing medium (GM) as substrate. The mineralization patterns without and with plants were similar for all MFs and ROF, with more than 70% of the organic nitrogen mineralized in 77 days. In a first fertilization trial with parsley, all MFs showed equal performance compared to ROF, and the plant fresh weight was even higher with CAB fertilization. CAB was subsequently used in a follow‐up trial with petunia and resulted in elevated plant height, comparable chlorophyll content and a higher amount of flowers compared to ROF. Finally, a cost estimation for packed GM with supplemented fertilizer indicated that CAB and a blend of CAB/PNSB (85%/15%) were most cost competitive, with an increase of 6% and 7% in cost compared to ROF. In conclusion, as bio‐based fertilizers, MFs have the potential to contribute to sustainable plant nutrition, performing as good as a commercially available organic fertilizer, and to a circular economy.

中文翻译:

储存,施肥和成本特性突出了干燥的微生物生物质作为有机肥料的潜力。

向可持续农业和园艺的过渡是具有全球重要性的社会挑战。施肥对环境的影响最小。有机肥料由于其典型的释放模式和通过资源回收的生产方式,可以发挥重要作用。微生物肥料(MFs)构成了一类新兴的有机肥料,由干燥的微生物生物质组成,例如,用食品和饮料工业的废水生产而成。在这项研究中,测试了三类生物体作为MF:一种高速率的有氧菌团(CAB),微藻类Arthrospira platensis('Spirulina')和一种紫色的非硫细菌(PNSB)的红细菌sp。在作为干燥产品存储期间,MFs表现出轻度的吸湿活性,但在91天的存储期内矿物质和有机部分保持稳定。对于生物学测试,将参考有机肥料(ROF)用作阳性对照,并使用商业有机生长培养基(GM)作为底物。所有MF和ROF的有无植物的矿化模式都相似,在77天内超过70%的有机氮被矿化。在第一个使用欧芹的施肥试验中,所有农作物均表现出与ROF相同的性能,而CAB施肥则植物鲜重甚至更高。随后将CAB用于矮牵牛的后续试验中,与ROF相比,CAB可使株高升高,叶绿素含量可比并且花量更高。最后,补充肥料的包装转基因的成本估算表明,CAB和CAB / PNSB的混合物(85%/ 15%)最具成本竞争力,与ROF相比,成本增加了6%和7%。总之,作为生物基肥料,MF具有促进可持续植物营养,与商业有机肥料媲美以及循环经济的潜力。
更新日期:2020-03-16
down
wechat
bug