Uptake and Translocation of Nitrogen in Satsuma Mandarin Trees

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
本文フルテキスト

With the purpose of analyzing uptake and translocation of fertilizer N in Satsuma mandarin, 15N-labelled ammonium sulfate was applied as a fertilizer to experiment tree of about 20 years old in the following four seasons each: i.e. before harvest in autumn, after harvest in autumn, spring and summer. The translocation of 15N to leaves tool place within the year of application when it was supplied before harvest in autumn, whereas 15N applied before harvest in the autumnal season was translocated only at almost the same time with that applied in the following spring season. The translocation rate of applied 15N to leaf organs in the tree plants reached a peak about 25 days after fertilization when the soil temperature was about 10℃ of higher. The greatest contribution or applied 15N to fruit organs was observed under the summer N-fertilization. However, the summer application distributed more 15N to peel tissue than to flesh in the late autumn. These results were effectively incorporated in the improvement of cultivation practices of Satsuma mandarin in various parts of Japan, particularly in rationalizing fertilizer application in production centers.

刊行年月日
作成者 Tetsu IWAKIRI Masao SHIBUYA Takeo KOYAMA
オンライン掲載日
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
25
2
開始ページ 125
終了ページ 132
言語 eng

関連する刊行物