Effects of Different Kinds of Fertilizer and Application Methods on δ15N Values of Tomato

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
41-03-07.pdf415.08 KB

Effects of different kinds of fertilizer and application methods on tomato yields and inorganic nutrient contents were investigated. The contribution of nitrogen usage to tomato production for each fertilizer application was also estimated by the stable isotope ratio of nitrogen. LSR (low sulfate slow-release fertilizer, LSR plot), daily application of liquid OK-F-1 fertilizer (OK-F-1 plot) and PEL (manure pellet fertilizer, PEL plot) yielded most among the eight different treatments. Fruit quality as measured by nitrogen content (related to amino acid content) was higher in the OK-F-1 treatment. In the conventional fertilization of mixing fertilizer in soil, roots absorbed soil nitrogen which affected the δ15N values of fruits, while in the daily application of liquid fertilizer (fertigation) there was little observed influence of soil nitrogen on the δ15N values of the upper parts of tomato. These results suggested that fertigation is an effective fertilization method which preserved soil nitrogen.

刊行年月日
作成者 NAKANO Akimasa UEHARA Yoichi
著者キーワード

organic products

quality

stable isotope

公開者 Japan International Research Center for Agricultural Sciences
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
41
3
開始ページ 219
終了ページ 226
DOI 10.6090/jarq.41.219
権利 Japan International Research Center for Agricultural Sciences
言語 eng

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