Removable Capacity of Nitrate Nitrogen of Irrigation Water by Taro Cultivated on Paddy Fields
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Accession number;07A0024744
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| Title;Removable Capacity of Nitrate Nitrogen of Irrigation Water by Taro Cultivated on Paddy Fields |
| Author;
UEZONO ICHIRO
(Kagoshima Prefect. Agric. Exp. Stn., JPN)
NAKAZONO MITSUKI
(Kagoshima Prefect. Agric. Exp. Stn., JPN)
NAGATOMO MAKOTO
(Kagoshima Prefect. Agric. Exp. Stn., JPN)
KAMIMURA YUKIHIRO
(Kagoshima Prefect. Agric. Exp. Stn., JPN)
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Journal Title;Kagoshimaken Nogyo Shikenjo Kenkyu Hokoku
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Journal Code:Y0103A
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ISSN:0388-8215
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VOL.;NO.33;PAGE.21-31(2005)
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| Figure&Table&Reference;FIG.6, TBL.9, REF.11 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;In order to utilize the purification of irrigation water-quality and promotion of specialty of districts, we investigated the removable capacity of nitrate nitrogen of irrigation water by taro cultivated on paddy fields. 1. The yield of taro was increased for the number of taro tuber under the condition of high concentration of nitrate nitrogen of irrigation water. 2. The yield of taro and absorption of total nitrogen by taro were increased due to the high concentration of nitrate nitrogen of irrigation water. These tendencies were large amount of nitrogen fertilizer than nitrate nitrogen concentrate of irrigation water. 3. The utility rate of nitrate nitrogen of irrigation water was higher than the nitrogen fertilizer. Therefore, when we use the high nitrate nitrogen concentrate of irrigation water, we have to reduce the amount of nitrogen fertilizer about 30 percent. 4. Taro absorbed 50% or more of nitrate nitrogen that supplied by irrigation water, and these about 80 percent were accumulated among at taro tuber. 5. There is the same removable capacity of nitrate nitrogen of irrigation water by rice cultivate and taro cultivated on paddy fields. Although, the removable capability is smaller than about 80 percent by rice cultivate, it's about 50 percent. (author abst.) |
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