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ID 52124
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Title Alternative
Effects of potassium nutrition on fruit development and yield of substrate grown strawberry
Author
Yoshida, Yuichi Kaken ID researchmap
Ohmori, Toshimasa
Goto, Tanjuro Kaken ID researchmap
Murakami, Kenji
Abstract
 Effect of K nutrition on sugar and organic acid concentration in fruit and yield of strawberry cultivars (Fragaria ×ananassa Duch.; Nyoho, Toyonoka, Sachinoka, Asukarubi, Akihime, Tochiotome, and Sagahonoka) was investigated. Nutrient solution (NO3 8, NH4 1, P 1, K 4, Ca 2, Mg 1, SO4 1 ; mM) was modified to contain 0 to 4mM of K by replacing K with Ca and supplied from the beginning of flowering. K in the drainage decreased to a trace level 3 weeks after the beginning of treatment except for 4mM‒K solution. Absorption of NO3 apparently decreased in plants supplied 0mM‒K solution, but little difference was observed among the other 3 solutions. K concentration in petiole decreased linearly with decrease in K concentration in solutions, but there was little difference between the concentrations of leaflet of plants supplied with 4 and 2mM‒K solutions. No difference was observed in concentrations of sugars and organic acids in fruit in primary inflorescence. In the second inflorescence, organic acids and K concentration in fruit linearly decreased with decrease in K in supplied solutions while sugar concentration of fruit decreased significantly only in plants supplied 0mM‒K solution. When 0.5 to 4mM‒K solutions were supplied from 2 weeks after planting, marketable fruit yield was smallest in plants supplied 0.5mM‒K solution followed, by that supplied 1mM‒K solution, and largest in that supplied with 2mM‒K solution. Almost all K supplied with 2mM‒K solution was absorbed by strawberry plants and no difference was observed in quality and K concentration of fruit, yield and plant growth between the plants supplied with 2 and 4mM‒K solutions. It may be suitable to reduce the concentration of K in nutrient solution by half for substrate production of strawberry.
Keywords
Fragaria ×ananassa Duch.
K/Ca ratio
organic acids
sugars
Note
原著論文 (Original paper)
Published Date
2014-02-01
Publication Title
岡山大学農学部学術報告
Publication Title Alternative
Scientific Reports of the Faculty of Agriculture Okayama University
Volume
volume103
Publisher
岡山大学農学部
Publisher Alternative
Faculty of Agriculture, Okayama University
Start Page
11
End Page
19
ISSN
2186-7755
Content Type
Departmental Bulletin Paper
language
日本語
File Version
publisher
Refereed
False
Eprints Journal Name
srfa