<?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>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282024000100010</article-id>
<article-id pub-id-type="doi">10.19136/era.a11n1.3947</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Ácidos húmicos inducen crecimiento y protección contra el estrés hídrico en maíces nativos de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Humic acids induce growth and protection against water stress in native maizes of Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Campos]]></surname>
<given-names><![CDATA[Reinier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robles]]></surname>
<given-names><![CDATA[Celerino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calderín-García]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castañeda-Hidalgo]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñiz-Becerá]]></surname>
<given-names><![CDATA[Sahylin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perez-Alvares]]></surname>
<given-names><![CDATA[Sandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional  Laboratorio de Suelos]]></institution>
<addr-line><![CDATA[Santa Cruz Xoxocotlán Oaxaca]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Federal Rural de Rio de Janeiro Departamento de Suelos, Laboratorio de Química y Biología del Suelo ]]></institution>
<addr-line><![CDATA[Seropédica Rio de Jainero]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Tecnológico Nacional de México Instituto Tecnológico del Valle de Oaxaca ]]></institution>
<addr-line><![CDATA[Santa Cruz Xoxocotlán Oaxaca]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ingeniería ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Autónoma de Chihuahua Facultad de Ciencias Agrícolas y Forestales ]]></institution>
<addr-line><![CDATA[Delicias Chihuahua]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2024</year>
</pub-date>
<volume>11</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282024000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282024000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282024000100010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En condiciones controladas, la aplicación de sustancias húmicas (SH) favorece el crecimiento y el desarrollo de las plantas. Pero la evidencia científica en condiciones de campo abierto con y sin riego, está escasamente documentada. El objetivo fue caracterizar los ácidos húmicos (AH) extraídos de vermicompost de residuos sólidos urbanos empleando técnicas químicas y espectroscópicas, y evaluar el efecto de su aplicación vía radical en la etapa reproductiva, con riego y déficit hídrico inducido, en tres selecciones de maíz (Zea mays L.) de tres regiones del estado de Oaxaca, México. Las selecciones regionales de maíz empleadas se identificaron como Cajete (Caj), Zapalote (Zap) y Cuilapam (Cuil). Se ensayaron tres concentraciones de AH: 140, 150 y 160 mg L-1, se incluyó un tratamiento control, sin aplicación. El producto se aplicó por aspersión vía radical, antes, durante y después de la etapa de floración de las plantas de maíz. Los AH promovieron mayor altura de la planta, diámetro del tallo, producción de biomasa radical y aérea, en presencia de riego y con déficit hídrico inducido. El contenido relativo de agua y de prolina también fue estimulado, así como el contenido de clorofilas a, b y a+b. Los efectos negativos causados por un estrés hídrico inducido fueron atenuados por la aplicación de los AH. Los AH procedentes de vermicompost de residuos sólidos urbanos estimularon los parámetros de crecimiento en la fase reproductiva e indujeron protección anti estrés cuando se limitó el uso del riego.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Under controlled conditions, it has been shown that the application of humic substances (HS) favors the growth and development of plants. But, scientific evidence in open field conditions with and without irrigation has been poorly documented. The objective was to characterize the humic acids (HA) extracted from vermicompost of urban solid waste using chemical and spectroscopic techniques, and to evaluate the effect of its root application on the reproductive stage, with continuous irrigation and with induced water deficit, in three selections of maize (Zea mays L.) from three regions of the state of Oaxaca, Mexico, grown under field conditions. The regional corn selections used were identified as Cajete (Caj), Zapalote (Zap) and Cuilapam (Cuil). Three concentrations of HA were tested: 140, 150 and 160 mg L-1, a control treatment was included, without application. The product was applied by radical spraying, before, during and after the flowering stage of the corn plants. The HA promoted higher values in plant height, stem diameter, and production of root and shoot biomass, in the presence of irrigation and with induced water deficit. The relative content of water and proline were also stimulated, as well as the content of chlorophylls a, b, and a+b. The negative effects caused by an induced water stress were attenuated by the application of HA. HA from municipal solid waste vermicompost stimulated growth parameters in the reproductive phase and induced stress protection when irrigation use was limited.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Déficit hídrico]]></kwd>
<kwd lng="es"><![CDATA[etapa reproductiva]]></kwd>
<kwd lng="es"><![CDATA[sustancias húmicas]]></kwd>
<kwd lng="es"><![CDATA[Zea mays]]></kwd>
<kwd lng="en"><![CDATA[Wáter stress]]></kwd>
<kwd lng="en"><![CDATA[reproductive stage]]></kwd>
<kwd lng="en"><![CDATA[humic substances]]></kwd>
<kwd lng="en"><![CDATA[Zea mays]]></kwd>
</kwd-group>
</article-meta>
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<issue>2</issue>
<page-range>76-84</page-range></nlm-citation>
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<person-group person-group-type="author">
<name>
<surname><![CDATA[Yadav]]></surname>
<given-names><![CDATA[PK]]></given-names>
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<name>
<surname><![CDATA[Tripathi]]></surname>
<given-names><![CDATA[MK]]></given-names>
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<name>
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<given-names><![CDATA[S]]></given-names>
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<name>
<surname><![CDATA[Chauhan]]></surname>
<given-names><![CDATA[S]]></given-names>
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<name>
<surname><![CDATA[Tripathi]]></surname>
<given-names><![CDATA[N]]></given-names>
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<name>
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<given-names><![CDATA[RS]]></given-names>
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<surname><![CDATA[Solanki]]></surname>
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<article-title xml:lang=""><![CDATA[Genetic components and variability assessment for grain yield and its accrediting traits in maize (Zea mays L.)]]></article-title>
<source><![CDATA[International Journal of Environment and Climate Change]]></source>
<year>2023</year>
<volume>13</volume>
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