The change in water quality for irrigation in Tochigi prefecture [Japan]
We investigated the quality of irrigation water for 14 elements including nutrient salts in Tochigi Prefecture from 1996 to 1998. The irrigation water was sampled at 85 points 5 times during the period from transplanting to ripening of rice plants. The drainage water was sampled at 6 points 7 times...
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| Veröffentlicht in: | Japanese Journal of Crop Science 2009, Vol.78(2), pp.234-241 |
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| container_title | Japanese Journal of Crop Science |
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| creator | Miyazaki, N.(Tochigi Prefectural Coll. of Agriculture, Utsunomiya (Japan)) Sekiwa, T Yoshida, T |
| description | We investigated the quality of irrigation water for 14 elements including nutrient salts in Tochigi Prefecture from 1996 to 1998. The irrigation water was sampled at 85 points 5 times during the period from transplanting to ripening of rice plants. The drainage water was sampled at 6 points 7 times during the period from transplanting to November. The percentage of the water with the value within the standard value for irrigation was 70, 88, 84, 30 and 100 in pH, EC, COD, T-N and SS, respectively. The water quality was, the best in the Naka basin, followed by was the Kinu basin and was the worst in the Watarase basin. The range of seasonal changes in water quality was narrow. The point with the most polluted water was in the area downstream from cities in the southern and western part of Tochigi Prefecture. The nutrient salt concentration of the drainage was higher than that of irrigation, except for SiO2. The nutrient salt concentration in 1996-1998 tended to be lower than that in 1986-1988, especially in T-N. |
| doi_str_mv | 10.1626/jcs.78.234 |
| format | Article |
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The irrigation water was sampled at 85 points 5 times during the period from transplanting to ripening of rice plants. The drainage water was sampled at 6 points 7 times during the period from transplanting to November. The percentage of the water with the value within the standard value for irrigation was 70, 88, 84, 30 and 100 in pH, EC, COD, T-N and SS, respectively. The water quality was, the best in the Naka basin, followed by was the Kinu basin and was the worst in the Watarase basin. The range of seasonal changes in water quality was narrow. The point with the most polluted water was in the area downstream from cities in the southern and western part of Tochigi Prefecture. The nutrient salt concentration of the drainage was higher than that of irrigation, except for SiO2. 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J. Crop Sci.</addtitle><description>We investigated the quality of irrigation water for 14 elements including nutrient salts in Tochigi Prefecture from 1996 to 1998. The irrigation water was sampled at 85 points 5 times during the period from transplanting to ripening of rice plants. The drainage water was sampled at 6 points 7 times during the period from transplanting to November. The percentage of the water with the value within the standard value for irrigation was 70, 88, 84, 30 and 100 in pH, EC, COD, T-N and SS, respectively. The water quality was, the best in the Naka basin, followed by was the Kinu basin and was the worst in the Watarase basin. The range of seasonal changes in water quality was narrow. The point with the most polluted water was in the area downstream from cities in the southern and western part of Tochigi Prefecture. The nutrient salt concentration of the drainage was higher than that of irrigation, except for SiO2. The nutrient salt concentration in 1996-1998 tended to be lower than that in 1986-1988, especially in T-N.</description><subject>AGUAS RESIDUALES</subject><subject>AZOTE</subject><subject>CALIDAD DEL AGUA</subject><subject>CARGA CONTAMINANTE</subject><subject>CHARGE POLLUANTE</subject><subject>EAU USEE</subject><subject>IRRIGATION</subject><subject>Irrigation water</subject><subject>MINERAL NUTRIENTS</subject><subject>NITROGEN</subject><subject>NITROGENO</subject><subject>Nutrient salt</subject><subject>NUTRIENTES MINERALES</subject><subject>Oryza sativa</subject><subject>POLLUTANT LOAD</subject><subject>QUALITE DE L'EAU</subject><subject>REPIQUAGE</subject><subject>RIEGO</subject><subject>SUBSTANCE NUTRITIVE MINERALE</subject><subject>Tochigi Prefecture</subject><subject>Total nitrogen</subject><subject>TRANSPLANTING</subject><subject>TRASPLANTE</subject><subject>WASTEWATER</subject><subject>WATER QUALITY</subject><issn>0011-1848</issn><issn>1349-0990</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNpdkc9LwzAUx4MoOOYu3oWC4EHozI82TU4iQ51joId5Eglp-tpldO2WtMj-ezMqO3jJI7xPvsn7BKFrgqeEU_6wMX6aiSllyRkaEZbIGEuJz9EIY0JiIhJxiSbe2xxjLBkXTI7QfLWGyKx1U0Fkm-hHd-Cifa9r2x2isnWRdc5WurNtc-yvWrO2lY12DkowXe8g-lronW6-r9BFqWsPk786Rp8vz6vZPF6-v77NnpaxoZlIYkhZJmnKKDBjeClSzknCcAEkT4skbGkmZVkWupA8NxJ4AZjxJJeC07RMCRujuyF359p9D75TW-sN1LVuoO29ojioCCkBvP0HbtreNeFtKtwohMQylYG6HyjjWu_DVGrn7Fa7gyJYHa2qYFVlQgWrAX4c4I3vdAUnVLvOmhpO6LCEE6dOMOwUNCHhZkgodat05axXiw8avgNjmiWY_QKh0Ihc</recordid><startdate>2009</startdate><enddate>2009</enddate><creator>Miyazaki, N.(Tochigi Prefectural Coll. of Agriculture, Utsunomiya (Japan))</creator><creator>Sekiwa, T</creator><creator>Yoshida, T</creator><general>CROP SCIENCE SOCIETY OF JAPAN</general><general>Japan Science and Technology Agency</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope><scope>7QH</scope><scope>7TV</scope><scope>7UA</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope></search><sort><creationdate>2009</creationdate><title>The change in water quality for irrigation in Tochigi prefecture [Japan]</title><author>Miyazaki, N.(Tochigi Prefectural Coll. of Agriculture, Utsunomiya (Japan)) ; Sekiwa, T ; Yoshida, T</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2784-e53792532e3cc6f85661430de1b5d48562799ffdad96bc9e6de0364b98625f513</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng ; jpn</language><creationdate>2009</creationdate><topic>AGUAS RESIDUALES</topic><topic>AZOTE</topic><topic>CALIDAD DEL AGUA</topic><topic>CARGA CONTAMINANTE</topic><topic>CHARGE POLLUANTE</topic><topic>EAU USEE</topic><topic>IRRIGATION</topic><topic>Irrigation water</topic><topic>MINERAL NUTRIENTS</topic><topic>NITROGEN</topic><topic>NITROGENO</topic><topic>Nutrient salt</topic><topic>NUTRIENTES MINERALES</topic><topic>Oryza sativa</topic><topic>POLLUTANT LOAD</topic><topic>QUALITE DE L'EAU</topic><topic>REPIQUAGE</topic><topic>RIEGO</topic><topic>SUBSTANCE NUTRITIVE MINERALE</topic><topic>Tochigi Prefecture</topic><topic>Total nitrogen</topic><topic>TRANSPLANTING</topic><topic>TRASPLANTE</topic><topic>WASTEWATER</topic><topic>WATER QUALITY</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Miyazaki, N.(Tochigi Prefectural Coll. of Agriculture, Utsunomiya (Japan))</creatorcontrib><creatorcontrib>Sekiwa, T</creatorcontrib><creatorcontrib>Yoshida, T</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>Aqualine</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Japanese Journal of Crop Science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Miyazaki, N.(Tochigi Prefectural Coll. of Agriculture, Utsunomiya (Japan))</au><au>Sekiwa, T</au><au>Yoshida, T</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The change in water quality for irrigation in Tochigi prefecture [Japan]</atitle><jtitle>Japanese Journal of Crop Science</jtitle><addtitle>Jpn. J. Crop Sci.</addtitle><date>2009</date><risdate>2009</risdate><volume>78</volume><issue>2</issue><spage>234</spage><epage>241</epage><pages>234-241</pages><issn>0011-1848</issn><eissn>1349-0990</eissn><abstract>We investigated the quality of irrigation water for 14 elements including nutrient salts in Tochigi Prefecture from 1996 to 1998. The irrigation water was sampled at 85 points 5 times during the period from transplanting to ripening of rice plants. The drainage water was sampled at 6 points 7 times during the period from transplanting to November. The percentage of the water with the value within the standard value for irrigation was 70, 88, 84, 30 and 100 in pH, EC, COD, T-N and SS, respectively. The water quality was, the best in the Naka basin, followed by was the Kinu basin and was the worst in the Watarase basin. The range of seasonal changes in water quality was narrow. The point with the most polluted water was in the area downstream from cities in the southern and western part of Tochigi Prefecture. The nutrient salt concentration of the drainage was higher than that of irrigation, except for SiO2. The nutrient salt concentration in 1996-1998 tended to be lower than that in 1986-1988, especially in T-N.</abstract><cop>Tokyo</cop><pub>CROP SCIENCE SOCIETY OF JAPAN</pub><doi>10.1626/jcs.78.234</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| source | J-STAGE Free; EZB-FREE-00999 freely available EZB journals; AgriKnowledge（アグリナレッジ）AGROLib |
| subjects | AGUAS RESIDUALES AZOTE CALIDAD DEL AGUA CARGA CONTAMINANTE CHARGE POLLUANTE EAU USEE IRRIGATION Irrigation water MINERAL NUTRIENTS NITROGEN NITROGENO Nutrient salt NUTRIENTES MINERALES Oryza sativa POLLUTANT LOAD QUALITE DE L'EAU REPIQUAGE RIEGO SUBSTANCE NUTRITIVE MINERALE Tochigi Prefecture Total nitrogen TRANSPLANTING TRASPLANTE WASTEWATER WATER QUALITY |
| title | The change in water quality for irrigation in Tochigi prefecture [Japan] |
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