<?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>1665-1456</journal-id>
<journal-title><![CDATA[Biotecnia]]></journal-title>
<abbrev-journal-title><![CDATA[Biotecnia]]></abbrev-journal-title>
<issn>1665-1456</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Sonora, División de Ciencias Biológicas y de la Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-14562025000100167</article-id>
<article-id pub-id-type="doi">10.18633/biotecnia.v27.2467</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cianobacterias como alternativa de fertilización biológica para el cultivo de maíz]]></article-title>
<article-title xml:lang="en"><![CDATA[Cyanobacteria as alternative for biological fertilization of maize crop]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santiago-Juárez]]></surname>
<given-names><![CDATA[Gabriela A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trujillo-Tapia]]></surname>
<given-names><![CDATA[Ma. Nieves]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Fuentes]]></surname>
<given-names><![CDATA[Eustacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Mar campus Puerto Ángel ]]></institution>
<addr-line><![CDATA[San Pedro Pochutla Oaxaca]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad del Mar campus Puerto Ángel ]]></institution>
<addr-line><![CDATA[San Pedro Pochutla Oaxaca]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad del Mar campus Puerto Ángel ]]></institution>
<addr-line><![CDATA[San Pedro Pochutla Oaxaca]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<volume>27</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-14562025000100167&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-14562025000100167&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-14562025000100167&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El uso continuo de fertilizantes químicos en los campos agrícolas provoca la degradación del suelo, la contaminación ambiental y daños a la salud humana. Los fertilizantes nitrogenados son poco eficientes, más del 50 % del N aplicado se pierde por lixiviación, adsorción a las partículas del suelo o volatilización de NH3 a la atmosfera; y su efecto negativo provoca la acidificación del suelo, la eutroficación de los cuerpos de agua y la pérdida de biodiversidad en los ecosistemas. El uso de biofertilizantes a base de cianobacterias fijadoras de nitrógeno es una alternativa prometedora para la producción agrícola, además son una fuente potencial de fertilización útil para remplazar a los fertilizantes químicos y promover la fertilidad del suelo. Los objetivos del trabajo fueron: comparar el biofertilizante vs fertilizante químico, y establecer el mejor sitio de aplicación del biofertilizante. La variedad de maíz V-524 se sembró en macetas en un suelo franco-arenoso, se asperjó cada 8 d una solución al 20 % (v/v) del biofertilizante en suelo, foliar y, combinado; el control fue sin biofertilizante. Los indicadores bioquímicos de la planta y el N en el suelo fueron analizados. Por los resultados obtenidos, las cianobacterias aportan el nitrógeno requerido por la planta; la tasa de crecimiento del maíz en el tratamiento C/B fue 1.09 veces mayor al tratamiento S/B. Podemos concluir que las cianobacterias son una alternativa de fertilización biológica en el cultivo de maíz, reduciendo hasta en un 50 % el uso de fertilizante químico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The continuous use of chemical fertilizers in agricultural fields causes soil degradation and environmental pollution, in addition to causing damage to human health. Nitrogen fertilizers are not very efficient, more than 50 % of the applied N is lost by leaching, adsorption to soil particles or NH3 volatilization into the atmosphere; and its negative effect causes soil acidification, eutrophication of water bodies and loss of biodiversity in ecosystems. The use of biofertilizers based on nitrogen-fixing cyanobacteria is a promising alternative for agricultural production; they are also a potential source of useful fertilization to replace chemical fertilizers and promote soil fertility. The objectives of this work were to compare the biofertilizer vs chemical fertilizer and establish the best application site for the biofertilizer. Maize variety V-524 was planted in pots with a sandy loam soil, a 20 % (v/v) solution of the biofertilizer was sprinkled every 8 days on the soil, foliar and, combined; control was without biofertilizer. Biochemical indicators of the plant and N soil were analyzed. According to the results obtained, cyanobacteria provide the nitrogen required by the plant; the growth rate of corn in treatment C/B was 1.09 times higher than treatment S/B. We conclude that cyanobacteria are an alternative for biological fertilization in maize cultivation, reducing the use of chemical fertilizer by up to 50 %.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Contaminación ambiental]]></kwd>
<kwd lng="es"><![CDATA[cianospray]]></kwd>
<kwd lng="es"><![CDATA[biotecnología ambiental]]></kwd>
<kwd lng="en"><![CDATA[Environmental pollution]]></kwd>
<kwd lng="en"><![CDATA[cyanospray]]></kwd>
<kwd lng="en"><![CDATA[environmental biotechnology]]></kwd>
</kwd-group>
</article-meta>
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