<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792022000100109</article-id>
<article-id pub-id-type="doi">10.28940/terra.v40i0.926</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Quelato EDDHA para corregir la deficiencia de hierro en árboles de limón italiano (Citrus limon (L.) Osbeck)]]></article-title>
<article-title xml:lang="en"><![CDATA[Chelate EDDHA to correct the iron deficiency in Italian lemon trees (Citrus limon (L.) Osbeck)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Puente-Ramírez]]></surname>
<given-names><![CDATA[Juan Valentín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Ortiz]]></surname>
<given-names><![CDATA[Patricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva-Espinosa]]></surname>
<given-names><![CDATA[José Hugo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Andrade-Limas]]></surname>
<given-names><![CDATA[Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Tamaulipas Centro Universitario Adolfo López Mateos ]]></institution>
<addr-line><![CDATA[Ciudad Victoria Tamaulipas]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>40</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792022000100109&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792022000100109&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792022000100109&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La citricultura es una de las actividades productivas más importantes en el estado de Tamaulipas, México. Sin embargo, en la mayoría de los huertos los rendimientos de estos frutales son bajos y frecuentemente de baja calidad debido a un bajo suministro de hierro (Fe) y otros micronutrientes, por las características calcáreas de los suelos tales como pH medianamente alcalino, alrededor de 8, y un contenido de carbonatos de calcio superior 40%, lo cual induce la precipitación del hierro en forma de óxidos e hidróxidos y por lo tanto baja disponibilidad de Fe para la planta. Por lo que el objetivo del presente trabajo fue evaluar el efecto del quelato FeEDDHA aplicado al suelo. Se utilizaron árboles de limón italiano (Citrus limon (L.) Osbeck) de 25 años, injertados sobre patrones de naranjo agrio, con síntomas visuales de deficiencia de hierro; amarillamiento severo y persistente de las hojas nuevas. Se evaluó la aplicación al suelo de dosis del quelato FeEDDHA correspondientes a 50, 100 y 150 g árbol&#8209;1 y el control. Las aplicaciones del FeEDDHA al suelo, fueron realizadas con el propósito de determinar la dosis más apropiada del quelante para corregir la deficiencia de hierro en árboles de limón italiano bajo condiciones de suelos calcáreos de la zona centro del estado. La aplicación del quelato al suelo en dosis de entre 50 y 100 g árbol-1 de FeEDDHA aumentó el índice SPAD en las hojas y corrigió la deficiencia de Fe en los árboles, aumentó significativamente la concentración foliar de Fe hasta nivel óptimo (77 mg kg-1 Fe), el rendimiento de fruto (40 Mg ha-1) y el ingreso económico. La aplicación de una dosis mayor, 150 g árbol-1 de FeEDDHA, no incrementó significativamente la asimilación de hierro y la producción de fruto en los árboles de limón italiano.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary: Citriculture is one of the most important productive activities in the State of Tamaulipas, Mexico. However, in most orchards the yields of these fruit trees are low and frequently of poor quality due to a low supply of iron and other micronutrients. The calcareous characteristics of the soils such as a moderately alkaline pH -around 8- and a calcium carbonate content higher than 40% induce the precipitation of iron in the form of oxides and hydroxides, causing low availability of Fe for the plant. Therefore, the objective of this work was to evaluate the effect of the FeEDDHA chelate applied to the soil. In our study we used 25-year-old Italian lemon trees (Citrus limon (L.) Osbeck) grafted on sour orange rootstocks, with visual symptoms of iron deficiency and severe and persistent yellowing of new leaves. The application of different concentrations of FeEDDHA chelate (50, 100 and 150 g tree-1) to the soil and the control treatment were evaluated. We applied FeEDDHA to the soil with the purpose of determining the most appropriate dose of the chelator to correct the iron deficiency in Italian lemon trees under calcareous soil conditions of the Central zone of the State. The application of the chelate to the soil in doses between 50 and 100 g tree&#8209;1 of FeEDDHA increased the SPAD index in the leaves, corrected the Fe deficiency in the trees, and significantly increased the foliar concentration of Fe to an optimal level (77 mg kg-1 Fe), the fruit yield (40 Mg ha-1) and the economic income. In addition, the application of a higher dose, 150 g tree-1 of FeEDDHA, did not significantly increase iron assimilation and fruit production in Italian lemon trees.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cítricos]]></kwd>
<kwd lng="es"><![CDATA[clorosis férrica]]></kwd>
<kwd lng="es"><![CDATA[suelos calcáreos]]></kwd>
<kwd lng="en"><![CDATA[citrus]]></kwd>
<kwd lng="en"><![CDATA[ferric chlorosis]]></kwd>
<kwd lng="en"><![CDATA[calcareous soils]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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