FUKUNAGA Ayako

NISHIKAWA Maki

SASANUMA Mari

English

紀要類（bulletin）Poster Sessionsdepartmental bulletin pape

FUKUNAGA, Ayako

NISHIKAWA, Maki

SASANUMA, Mari

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

Effect of Arbuscular Mycorrhizal FungiApplication on Welsh Onion Growth and Yield著者 FUKUNAGA Ayako, NISHIKAWA Maki, SASANUMA Marijournal orpublication titleJournal of Integrated Field Sciencevolume 15page range 77-77year 2018-10URL http://hdl.handle.net/10097/00124018 77Poster Sessionp2. Effect of Arbuscular Mycorrhizal Fungi Application on Welsh Onion Growth and YieldAyako FUKUNAGA, Maki NISHIKAWA and Mari SASANUMAINARO Western Region Agricultural Research CenterArbuscular mycorrhizal fungi are expected to reduce the need for phosphate fertilizers. Our previous study on the effects of arbuscular mycorrhizal fungi inoculation on soybean and Welsh onion (Allium fi stulosum L. ‘Motokura’) showed that there were no growth promoting eff ects of the inoculation on soybean in the fi eld; however, the inoculation increased Welsh onion growth and yield. Therefore, in the present study, we conducted further fi eld inoculation experiments in Welsh onion. Welsh onion was sown with the inoculum R10 (Idemitsu Kosan Co., Japan) in nursery beds without indigenous arbuscular mycorrhizal fungi. Phosphate fertilizer was used only in the non-inoculated nursery beds. Six-week-old seedlings were transplanted to fi elds and cultivated for 4 months. We used two fi elds located in Kyoto and Shiga, in Japan. Soil textures in both fi elds are Andosols. In the fi eld, the test plants were grown using an experimental design with two treatments (inoculation and non-inoculation) and two phosphate fertilizer levels (0 and 20 kg per 10a) with 4 repetitions (blocks).The inoculated seedlings showed poor growth before transplantation because of the lack of phosphate fertilizer. However, after transplantation, in the Kyoto fi eld, the inoculated seedlings showed rapid growth and their fresh weight was higher than that of the non-inoculated seedlings on the 35th day of transplantation and at the time of harvest under the lower phosphate fertilization level. In the Shiga fi eld, the diff erence in seedling growth tended to decrease as cultivation progressed, but the yield did not diff er between the inoculation and non-inoculation treatments under either fertilization level. These results suggest that arbuscular mycorrhizal fungi inoculation improves the growth of Welsh onion under fi eld conditions. However, some issues hinder the practical application of arbuscular mycorrhizal fungi inoculation in the field. For example, the optimal method for inoculation in nursery beds, which would allow for mechanical transplantation of seedlings, needs to be determined.

Effect of Arbuscular Mycorrhizal Fungi Application on Welsh Onion Growth and Yield

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Effect of Arbuscular Mycorrhizal Fungi Application on Welsh Onion Growth and Yield

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