ITO Toyoaki

OHSHIMA Kensuke

SAITO Masanori

TAJIMA Ryosuke

UNO Toru

English

紀要類（bulletin）Poster Sessionsdepartmental bulletin pape

OHSHIMA, Kensuke

UNO, Toru

TAJIMA, Ryosuke

ITO, Toyoaki

SAITO, Masanori

Tohoku University Repository (TOUR) / 東北大学機関リポジトリ

Growth Medium for Seedling Production ofArbuscular Mycorrhizal Fungi-Based Cultivationof Welsh Onion著者 OHSHIMA Kensuke, UNO Toru, TAJIMA Ryosuke, ITOToyoaki, SAITO Masanorijournal orpublication titleJournal of Integrated Field Sciencevolume 15page range 83-83year 2018-10URL http://hdl.handle.net/10097/00124024 83Poster Sessionp8. Growth Medium for Seedling Production of  Arbuscular Mycorrhizal Fungi-Based Cultivation of Welsh OnionKensuke OHSHIMA1, Toru UNO2, Ryosuke TAJIMA2, Toyoaki ITO2 and Masanori SAITO2,31Faculty of Agriculture, Tohoku University  2Graduate School of Agricultural Science, Tohoku University  3Japan Science and Technology AgencyIt has been demonstrated that pre-inoculation of Welsh onion (Allium fistulosum L.) seedlings with arbuscular mycorrhizal fungi (AMF) is effective to improve its growth in field after transplantation, to increase P uptake, and to reduce P fertilizer (Tawaraya et al. 2012; Suzuki et al. 2015, 2017). Growth medium containing organic material like peat moss is widely used for seedling production of Welsh onion. However, such organic-based medium has been considered to suppress AMF colonization (Saito, personal communication). In the above literatures, therefore, andosol-based medium was used for seedling production, and its physicochemical properties was not so optimum in terms of workability and seedling growth. In this study, we aimed at development of organic-based growth medium for AMF-based cultivation of Welsh onion. Basic andosol-based medium was composed of an equal volume of non-allophonic Andosol, zeolite, and “Akadama” soil. It was blended with organic amendments such as peat moss, coconut fiber, composted bark, and chaff charcoal at 0%, 10%, 30%, 50%, or 100%, respectively, and some physiochemical properties of them were examined. Based on these analyses, 9 kinds of medium were selected for further experiments. 4 kinds of organic amendments were added to the basic andosol-based medium at 0%, 30%, and 50%, respectively. Commercial AMF inoculum, Glomus sp. R-10, was added to the mixed medium at rate of 5%. Welsh onion was grown in these medium in a growth chamber for 60 days. Non-inoculated plants ware also grown as control. Growth parameters of Welsh onion, AMF colonization, N and P concentration in plant tissues were examined. As a result, there were no significant differences between basic andosol-based medium and almost all organic medium in terms of AMF colonization and growth promotion effects. Mycorrhizal responses of some organic medium were better than inorganic medium. Under high P conditions (1,000 mg P2O5/L dry soil), positive mycorrhizal responses were found. Thus, the organic medium presented in this study is effective for seedling production of AMF-based cultivation of Welsh onion.Tawaraya et al. (2012) Biol. Fertil. Soils, 48: 839−843.Suzuki et al. (2015) Soil Microorganisms, 69: 48-57.Suzuki et al. (2017) ICOM9, Abstract.

Growth Medium for Seedling Production of Arbuscular Mycorrhizal Fungi-Based Cultivation of Welsh Onion

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Growth Medium for Seedling Production of Arbuscular Mycorrhizal Fungi-Based Cultivation of Welsh Onion

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