{"id":55468,"date":"2002-01-01T00:00:00","date_gmt":"2018-12-04T06:00:54","guid":{"rendered":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/nitrate-pollution-in-groundwater-and-strategies-to-reduce\/"},"modified":"2018-12-04T07:00:54","modified_gmt":"2018-12-04T06:00:54","slug":"nitrate-pollution-in-groundwater-and-strategies-to-reduce","status":"publish","type":"resume","link":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/nitrate-pollution-in-groundwater-and-strategies-to-reduce\/","title":{"rendered":"Nitrate pollution in groundwater and strategies to reduce pollution"},"content":{"rendered":"<p>The input-intensive rainfed tropical ecosystem, where wet season (WS) rice (Oriza sativa L.) &#8211; dry season (DS) diversified high-value upland crops like vegetables predominate, has resulted in a problem of a large leakage of N into the environment, thereby polluting the water. Excessive use of N fertilizer in high-value crops grown in DS is economically motivated. Out of twenty water sources evaluated in a watershed with a total area of 265 ha located in Magnuang, Ilocos Norte, Philippines, twelve had near or above the World Health Organization&rsquo;s (WHO) NO3-N limit for drinking water of 10 ppm. Soil mineral N (upper 100 cm) observed in seven rice-sweet pepper (Capsicum annuum L.) farmers&rsquo; fields ranged from 111 to 694 kg ha(-1) which decreased by 10 to 68% in plots with dry-to-wet (DTW) crops like indigo, indigo+mungo and corn. In fallow plots where mineral IN was either maintained or increased, it showed movement to lower soil profiles demonstrating NO3 leaching without a crop. On average, maize (Zea mays L.) captured 176 kg N ha(-1) and indigo (Indigofera tinctoria L.) 194 kg N ha(-1). In both fallow and planted plots, mineral IN declined to low levels at 100% water-filled pore spaces (WFPS) before rice transplanting. A strategy for including indigo plus maize as a N-catch crop is proposed to decrease NO3 leaching and maximize N use efficiency in a rice-sweet pepper cropping system.<\/p>\n","protected":false},"template":"","mots_cles":[],"class_list":["post-55468","resume","type-resume","status-publish","hentry"],"acf":{"adresse":"\"SHRESTHA RK,NARC,SOIL SCI DIV; NEPAL.shrestha@infoclub.com.np  \"","annee":"2002","mois":"0","numero":"45:9","page":"29-35","auteurs":[{"ID":55467,"post_author":"0","post_date":"2018-12-04 07:00:54","post_date_gmt":"2018-12-04 06:00:54","post_content":"","post_title":"Ladha","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"ladha","to_ping":"","pinged":"","post_modified":"2018-12-04 07:00:54","post_modified_gmt":"2018-12-04 06:00:54","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/ladha\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":51121,"post_author":"0","post_date":"2018-12-04 05:32:38","post_date_gmt":"2018-12-04 04:32:38","post_content":"","post_title":"Shrestha","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"shrestha-2","to_ping":"","pinged":"","post_modified":"2018-12-04 05:32:38","post_modified_gmt":"2018-12-04 04:32:38","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/shrestha-2\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"}],"sources":[{"ID":54726,"post_author":"0","post_date":"2018-12-04 06:49:00","post_date_gmt":"2018-12-04 05:49:00","post_content":"","post_title":"WATER SCIENCE AND TECHNOLOGY","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"water-science-and-technology","to_ping":"","pinged":"","post_modified":"2018-12-04 06:49:00","post_modified_gmt":"2018-12-04 05:49:00","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/source\/water-science-and-technology\/","menu_order":0,"post_type":"source","post_mime_type":"","comment_count":"0","filter":"raw"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.6 (Yoast SEO v23.6) - 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