<?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>0122-8706</journal-id>
<journal-title><![CDATA[Ciencia y Tecnología Agropecuaria]]></journal-title>
<abbrev-journal-title><![CDATA[Cienc. Tecnol. Agropecuaria]]></abbrev-journal-title>
<issn>0122-8706</issn>
<publisher>
<publisher-name><![CDATA[Corporación Colombiana de Investigación Agropecuaria - Corpoica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-87062022000100018</article-id>
<article-id pub-id-type="doi">10.21930/rcta.vol23_num1_art:2343</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Potencialidades de dos bioestimulantes en la germinación y el crecimiento de las plántulas de tomate]]></article-title>
<article-title xml:lang="en"><![CDATA[Potentialities of two biostimulants on germination and growth of tomato seedlings]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castro Lizazo]]></surname>
<given-names><![CDATA[Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calero Hurtado]]></surname>
<given-names><![CDATA[Alexander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Hernández]]></surname>
<given-names><![CDATA[Mayra G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peláez Casas]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Balmori]]></surname>
<given-names><![CDATA[Dariellys]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Díaz]]></surname>
<given-names><![CDATA[Yanery]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Agraria de La Habana &#8220;Fructuoso Rodríguez Pérez&#8221;  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade Estadual Paulista &#8220;Júlio de Mesquita Filho&#8221;  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro Nacional de Sanidad Agropecuaria  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto de Ciencia Animal  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Agraria de La Habana &#8220;Fructuoso Rodríguez Pérez&#8221;  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Sancti Spíritus &#8220;José Martí Pérez&#8221;  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>23</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-87062022000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-87062022000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-87062022000100018&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este estudio fue evaluar la influencia de los bioestimulantes QuitoMax® y OPLANT+® en la germinación y el crecimiento de las plántulas de tomate (Solanum lycopersicum L.). En condiciones de laboratorio, se realizó un experimento en esquema factorial (7 × 3), en un diseño completamente aleatorizado, con tres repeticiones. Tres concentraciones de QuitoMax® (2,5, 5 y 10 mg/L), tres diluciones de OPLANT+® (1:40, 1:50 y 1:60 (v:v)) y un control (agua) se combinaron con tres tiempos de imbibición (TI) (10, 20 y 30 min). Otro experimento se realizó en condiciones de campo en bloques al azar, con tres tratamientos y siete réplicas. Un control (sin bioestimulantes), semillas embebidas en 5 mg/L de QuitoMax® por 20 min y 1:60, v:v de OPLANT+® por 30 min. Los resultados indican que el QuitoMax® y el OPLANT+® mostraron efectos similares en la germinación en los tratamientos con 5 mg/L por 20 min y 1:60 por 30 min, respectivamente. La masa seca de la parte aérea y de las raíces se incrementó en 24 % y 98 % con el QuitoMax®, y 11 % y 90 % con el OPLANT+® en relación con el tratamiento control. Sin embargo, el QuitoMax® fue más promisorio en la promoción del crecimiento de las plantas que las sustancias húmicas. Este estudio sugiere que ambos bioestimulantes son eficientes y viables para estimular la germinación y el crecimiento de las plantas de tomate, lo cual sugiere su utilización en la producción sostenible en estas etapas del cultivo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective of this study was to evaluate the influence of the biostimulants QuitoMax® and OPLANT+® on germination and growth of tomato (Solanum lycopersicum L.) seedlings. Under laboratory conditions, an experiment was carried out in a factorial scheme (7 × 3), in a completely randomized design, with three repetitions. Three concentrations of QuitoMax® (2.5, 5 and 10 mg/L), three dilutions of OPLANT+® (1:40, 1:50 and 1:60 (v: v)) and a control (water) were combined with three imbibitions times (TI) (10, 20 and 30 min). Another experiment was carried out under field conditions in a randomized block design, with three treatments and seven replications. A control (without biostimulants), seeds imbibed in 5 mg/L of QuitoMax® for 20 min and 1:60, v:v of OPLANT+® for 30 min. Results revealed that QuitoMax® and OPLANT+® showed similar effects on seeds germination in the treatments with 5 mg/L for 20 min and 1:60 for 30 min, respectively. The dry mass of the aerial part and the roots increased by 24 % and 98 % with the QuitoMax® and 11 % and 90 % with the OPLANT+® in relation to the control treatment, but QuitoMax® was more promising in growth promotion than humic substances. This study suggests that both biostimulants are efficient and viable to stimulate seed germination and tomato plants growth, which leads to their use in sustainable production in these crops stages.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[bioestimulantes]]></kwd>
<kwd lng="es"><![CDATA[crecimiento de la planta]]></kwd>
<kwd lng="es"><![CDATA[germinación]]></kwd>
<kwd lng="es"><![CDATA[imbibición de semilla]]></kwd>
<kwd lng="es"><![CDATA[plántulas]]></kwd>
<kwd lng="es"><![CDATA[productividad agrícola]]></kwd>
<kwd lng="es"><![CDATA[Solanum lycopersicum L.]]></kwd>
<kwd lng="es"><![CDATA[sustancias húmicas]]></kwd>
<kwd lng="es"><![CDATA[quitosano]]></kwd>
<kwd lng="en"><![CDATA[agricultural productivity]]></kwd>
<kwd lng="en"><![CDATA[biostimulants]]></kwd>
<kwd lng="en"><![CDATA[chitosan]]></kwd>
<kwd lng="en"><![CDATA[germination]]></kwd>
<kwd lng="en"><![CDATA[seed inbibition]]></kwd>
<kwd lng="en"><![CDATA[plant growth]]></kwd>
<kwd lng="en"><![CDATA[seedlings]]></kwd>
<kwd lng="en"><![CDATA[Solanum lycopersicum L.]]></kwd>
<kwd lng="en"><![CDATA[humic substances]]></kwd>
</kwd-group>
</article-meta>
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