{"id":77593,"date":"2005-02-12T00:00:00","date_gmt":"2005-02-12T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/contribuciones-cientificas-al-marco-legal-de-fertilizantes-de-quelatos-ferricos-analisis-cromatografico-eficacia-agronomica-de-o-p-eddha-fe3\/"},"modified":"2005-02-12T00:00:00","modified_gmt":"2005-02-12T00:00:00","slug":"contribuciones-cientificas-al-marco-legal-de-fertilizantes-de-quelatos-ferricos-analisis-cromatografico-eficacia-agronomica-de-o-p-eddha-fe3","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/contribuciones-cientificas-al-marco-legal-de-fertilizantes-de-quelatos-ferricos-analisis-cromatografico-eficacia-agronomica-de-o-p-eddha-fe3\/","title":{"rendered":"Contribuciones cientificas al marco legal de fertilizantes de quelatos ferricos. analisis cromatografico. eficacia agronomica de o.p eddha\/fe3+"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Sonia Garc\u00eda Marco <\/strong><\/h2>\n<p>Resumen de la memoria de tesis doctoral presentada por d\u00f1a sonia garc\u00eda marco titulada: \u00abcontribuciones cient\u00edficas al marco legal de fertilizantes de quelatos f\u00e9rricos: an\u00e1lisis  cromatogr\u00e1fico. Eficacia agron\u00f3mica de o,p-eddha\/fe3+\u00bb.  la clorosis f\u00e9rrica es una alteraci\u00f3n nutricional que se manifiesta por el amarilleamiento intervenal de las hojas j\u00f3venes, mientras que los nervios permanecen  verdes (chaney, 1984). Es un problema agr\u00edcola muy extendido que se produce sobre todo en cultivos sensibles que crecen en suelos calizos o alcalinos, donde los \u00f3xidos de fe presentan baja solubilidad (lindsay, 1991). El uso de quelatos f\u00e9rricos sint\u00e9ticos, concretamente los denominados \u00abfen\u00f3licos\u00bb, ha resultado ser la forma m\u00e1s eficaz de corregir dicha alteraci\u00f3n cuando el cultivo ya est\u00e1 establecido (sanz y col., 1992). De esta manera, se incrementa la solubilidad del fe favoreci\u00e9ndose as\u00ed su asimilaci\u00f3n por la planta. Su principal inconveniente es que se trata de productos muy caros, por lo que su aplicaci\u00f3n s\u00f3lo es econ\u00f3micamente rentable en cultivos de alto valor a\u00f1adido, como c\u00edtricos, frutales, hort\u00edcolas y ornamentales. durante los \u00faltimos quince a\u00f1os, el mercado espa\u00f1ol ha quintuplicado el n\u00famero de formulaciones comerciales de este tipo de fertilizantes. En el presente a\u00f1o (2005) se comercializan 262 fertilizantes simples de este tipo, siendo el 78% derivados del o,oeddha. Adem\u00e1s espa\u00f1a es el mayor consumidor europeo de estos fertilizantes, estim\u00e1ndose en el 2004 un consumo de 2.700 toneladas, lo que ha supuesto un desembolso para los agricultores de 26 millones de euros.  si bien el conocimiento de los factores que afectan a la eficacia de los quelatos ha sido objeto de estudio en los \u00faltimos a\u00f1os, la falta de metodolog\u00eda anal\u00edtica normalizada para cuantificar la riqueza real en fe quelado de estos productos ha impedido el control de su calidad, provocando la falta de rigurosidad en los datos decla<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Contribuciones cientificas al marco legal de fertilizantes de quelatos ferricos. analisis cromatografico. eficacia agronomica de o.p eddha\/fe3+<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Contribuciones cientificas al marco legal de fertilizantes de quelatos ferricos. analisis cromatografico. eficacia agronomica de o.p eddha\/fe3+ <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Sonia Garc\u00eda Marco <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 02\/12\/2005<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Juan  Jos\u00e9 Lucena Marotta<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: agustin Garate ormaechea <\/li>\n<li>Andrea Cremonini mauro (vocal)<\/li>\n<li>Jes\u00fas Hern\u00e1ndez m\u00e9ndez (vocal)<\/li>\n<li>Jos\u00e9 Mar\u00eda Garcia mina freire (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Sonia Garc\u00eda Marco Resumen de la memoria de tesis doctoral presentada por d\u00f1a sonia garc\u00eda marco titulada: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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