Scientific Reports of the Faculty of Agriculture, Okayama University
Published by the Faculty of Agriculture, Okayama University
ONLINE ISSN : 2186-7755

頭上灌水と底面灌水の組み合わせが熱融着性ポリエステル繊維固化 ポットレス培地で育てた花壇苗の生育に及ぼす影響

大橋 佑司 みのる産業㈱植物工学研究所
後藤 丹十郎 応用植物科学コース
清水 希 応用植物科学コース
小間 康史 みのる産業(株)植物工学研究所
森下 照久 みのる産業(株)植物工学研究所
藤井 一徳 みのる産業(株)植物工学研究所
島 浩二 和歌山県農林水産総合技術センター農業試験場
抄録
The effects of irrigation methods on several bedding plants without polyethylene pots using compacted polyester fiber medium hardened by heat fusion were investigated. The characteristics of overhead irrigation with a tray collecting runoff water (combination of overhead irrigation and subirrigation) were investigated at the same time. Irrigation usage (the amount of water supplied per pot / amount of irrigation water) with a combination of overhead irrigation and subirrigation was improved compared to overhead irrigation alone. The growth of garden type Cyclamen grown under a combination of both overhead irrigation and subirrigation was significantly greater than that grown in either wick irrigation, ebb & flow irrigation or overhead irrigation. Notably, smaller growth was achiered in garden type cyclamen grown with overhead irrigation. The growth of Vinca grown in a combination of overhead irrigation and subirrigation was significantly greater than that grown with overhead irrigation alone. The irrigation amount had no effect on the growth of Vinca regardless of irrigation method. The growth of Petunia was greater with increased amounts of irrigation water. However, the growth of Pansy grown under overhead irrigation was significantly greater than that grown in a combination of overhead irrigation and subirrigation. These results suggest that a combination of overhead irrigation and subirrigation method in bedding plant production without polyethylene pots is generally suitable since the plants grow without drought stress. However, it may be suggested that the amount of irrigation water should be as low as possible in the winter season or with sensitive species in order to prevent waterlogging injury.
キーワード
bedding plant
combination of overhead irrigation and subirrigation
drought stress
irrigation usage
waterlogging injury
ISSN
0474-0254 
NCID
AN00033029