<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342021000500937</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v12i5.2769</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Densidades de plantas y dosis de fertilización en el cultivo de amaranto]]></article-title>
<article-title xml:lang="en"><![CDATA[Plant densities and fertilization doses in the cultivation of amaranth]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero Romano]]></surname>
<given-names><![CDATA[Carlos Osvaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ocampo Mendoza]]></surname>
<given-names><![CDATA[Juventino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sandoval Castro]]></surname>
<given-names><![CDATA[Engelberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navarro Garza]]></surname>
<given-names><![CDATA[Hermilio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Franco Mora]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[ Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma del Estado de México  ]]></institution>
<addr-line><![CDATA[ Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>12</volume>
<numero>5</numero>
<fpage>937</fpage>
<lpage>944</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342021000500937&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342021000500937&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342021000500937&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de esta investigación fue evaluar la respuesta de Amaranthus hypochondriacus L. raza Mercado a la densidad de plantas y dosis de fertilización en las variables: rendimiento, altura de planta, diámetro de tallo, tamaño de panoja, e índice de plantas acamadas. Los factores de estudio fueron: densidad (D) de plantación (156 250, 208 333 y 260 417 plantas ha-1), niveles de nitrógeno (40, 80 y 120 kg ha-1), niveles de potasio (cero y 20 kg ha-1) y aplicación de 40 kg ha-1 de fósforo como una constante. El arreglo de tratamientos consistió en una factorial 3x3x2 en un diseño experimental de bloques completamente al azar con cuatro repeticiones y 18 tratamientos. El experimento se realizó en los ciclos de cultivo 2017 y 2018 en Tochimilco, Puebla, México. Las labores de cultivo se realizaron acorde al itinerario técnico del sistema convencional de siembra directa que consiste en colocar en cada hoyo de siembra un número variable de semillas para asegurar que en cada hoyo crezcan varias plantas y posteriormente realizar un aclareo, en el que se arrancan las plantas más pequeñas y se dejan tres, cuatro o cinco plantas en cada hoyo de siembra dependiendo de la experiencia de cada agricultor. Los resultados muestran diferencias altamente significativas (p&lt; 0.01) en rendimiento, altura de planta, longitud y ancho de panoja por efectos individuales e interacciones de D, N*K y N*K*D. Se concluyó, que la decisión que toman los productores de dejar tres, cuatro o cinco plantas por hoyo de siembra es una decisión determinante en la producción del amaranto.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective of this research was to evaluate the response of Amaranthus hypochondriacus L. race Mercado to plant density and fertilization doses in the variables: yield, plant height, stem diameter, panicle size, and index of plants with lodging. The study factors were: planting density (D) (156 250, 208 333 and 260 417 plants ha-1), nitrogen levels (40, 80 and 120 kg ha-1), potassium levels (zero and 20 kg ha-1) and application of 40 kg ha-1 of phosphorus as a constant. The arrangement of treatments consisted of a 3x3x2 factorial in an experimental design of completely random blocks with four repetitions and 18 treatments. The experiment was conducted in the 2017 and 2018 cultivation cycles in Tochimilco, Puebla, Mexico. The cultivation practices were carried out according to the technical itinerary of the conventional direct sowing system, which consists of placing in each sowing hole a variable number of seeds to ensure that in each hole several plants grow and then perform a thinning, in which the smallest plants are uprooted and three, four or five plants are left in each sowing hole depending on the experience of each farmer. The results show highly significant differences (p&lt; 0.01) in yield, plant height, length and width of panicle by individual effects and interactions of D, N*K and N*K*D. It was concluded that the decision made by producers to leave three, four or five plants per sowing hole is a decisive decision in the production of amaranth.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Amaranthus hypochondriacus L.]]></kwd>
<kwd lng="es"><![CDATA[itinerario técnico]]></kwd>
<kwd lng="es"><![CDATA[sistema convencional de siembra directa]]></kwd>
<kwd lng="en"><![CDATA[Amaranthus hypochondriacus L.]]></kwd>
<kwd lng="en"><![CDATA[conventional direct sowing system]]></kwd>
<kwd lng="en"><![CDATA[technical itinerary]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alemayehu]]></surname>
<given-names><![CDATA[F. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Bendevis]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Jacobsen]]></surname>
<given-names><![CDATA[S. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The potential for utilizing the seed crop amaranth (Amaranthus spp.) in East Africa as an alternative crop to support food security and climate change mitigation]]></article-title>
<source><![CDATA[J. Agr. Crop Sci]]></source>
<year>2015</year>
<volume>201</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>321-9</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ansari]]></surname>
<given-names><![CDATA[A. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Aghaalikhani]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of nitrogen and density on qualitative and quantitative performance of forage Amaranth]]></article-title>
<source><![CDATA[Iranian J. Agr. Sci]]></source>
<year>2012</year>
<volume>1</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>35-44</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bernal]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Estrada]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Gatica]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Microflora asociada a la semilla de amaranto (Amaranthus hypochondriacus L.)]]></article-title>
<source><![CDATA[Rev. Fitotec. Mex]]></source>
<year>2000</year>
<volume>23</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>109-18</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Espitia]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Mapes]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Escobedo]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[De la O]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Rivas]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Cortés]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Conservación y uso de los recursos genéticos de amaranto en México]]></source>
<year>2010</year>
<page-range>201</page-range><publisher-loc><![CDATA[Celaya, Guanajuato, México ]]></publisher-loc>
<publisher-name><![CDATA[SINAREFI]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Espitia]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Escobedo]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Núñez]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Aguilar]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Rivas]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Sesma]]></surname>
<given-names><![CDATA[L. F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Confirmación de razas geográficas de amaranto (Amaranthus spp.) por análisis discriminante canónico]]></article-title>
<source><![CDATA[Agrociencia]]></source>
<year>2020</year>
<volume>54</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>927-37</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[S. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Yassin]]></surname>
<given-names><![CDATA[G. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genotypic variability in grain amaranthus (Amaranthus hypochondriacus L.) under varied plant densities]]></article-title>
<source><![CDATA[J. Appl. Hortic]]></source>
<year>2014</year>
<volume>16</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>161-4</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moshaver]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Madani]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Emam]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Mohamadi]]></surname>
<given-names><![CDATA[G. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Sharifabad]]></surname>
<given-names><![CDATA[H. H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of planting date and density on amaranth (Amaranthus hypochondriacus L.) growth indices and forage yield]]></article-title>
<source><![CDATA[Journal of Experimental Biol. Agr. Sci]]></source>
<year>2016</year>
<volume>4</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>541-7</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ojo]]></surname>
<given-names><![CDATA[O. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Kintomo]]></surname>
<given-names><![CDATA[A. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Akinrinde]]></surname>
<given-names><![CDATA[E. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Akoroda]]></surname>
<given-names><![CDATA[M. O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparative effect of phosphorus sources for grain amaranth production]]></article-title>
<source><![CDATA[Comm. Soil Sci. Plant Analysis]]></source>
<year>2007</year>
<volume>38</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>35-55</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Olofintoye]]></surname>
<given-names><![CDATA[J. A. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Abayomi]]></surname>
<given-names><![CDATA[Y. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Olugbemi]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Yield responses of grain amaranth (Amaranthus cruentus L.) varieties to varying planting density and soil amendment]]></article-title>
<source><![CDATA[Afr. J. Agr. Res]]></source>
<year>2015</year>
<volume>10</volume>
<numero>21</numero>
<issue>21</issue>
<page-range>2218-25</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pourfarid]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Kamkar]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Akbari]]></surname>
<given-names><![CDATA[G. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effect of density on yield and some agronomical and physiological traits of Amaranth (Amaranthus spp.)]]></article-title>
<source><![CDATA[Int. J. Far. Alli. Sci]]></source>
<year>2014</year>
<volume>3</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1256-9</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ramírez]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Espitia]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Carballo]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Zepeda]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Vaquera]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Córdoba]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fertilización y densidad de plantas en variedades de amaranto (Amaranthus hypochondriacus L.)]]></article-title>
<source><![CDATA[Rev. Mex. Cienc. Agríc]]></source>
<year>2011</year>
<volume>2</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>855-66</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[C. O.]]></given-names>
</name>
<name>
<surname><![CDATA[Ocampo]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sandoval]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Navarro]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Franco]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Calderón]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fertilización orgánica-mineral del cultivo de amaranto (Amaranthus hypochondriacus L.)]]></article-title>
<source><![CDATA[Rev. Mex. Cienc. Agríc]]></source>
<year>2017</year>
<volume>8</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>1759-71</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[C. O.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendoza]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Castro]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estrategia para el fortalecimiento de la producción y comercialización de amaranto en Tochimilco, Puebla]]></article-title>
<source><![CDATA[Rev. Educateconciencia]]></source>
<year>2018</year>
<volume>18</volume>
<numero>19</numero>
<issue>19</issue>
<page-range>6-19</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="book">
<collab>SAS</collab>
<source><![CDATA[The SAS System]]></source>
<year>2004</year>
<page-range>830</page-range><publisher-loc><![CDATA[Cary, NC. USA ]]></publisher-loc>
<publisher-name><![CDATA[Institute Inc]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Argumedo]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Álvarez]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Méndez]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Conocimiento tradicional en prácticas agrícolas en el sistema del cultivo de amaranto en Tochimilco, Puebla]]></article-title>
<source><![CDATA[Agr. Soc. Des]]></source>
<year>2015</year>
<volume>12</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>237-54</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Argumedo]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Álvarez]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Méndez]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análisis económico del sistema sociotécnico del cultivo de amaranto en Tochimilco, Puebla]]></article-title>
<source><![CDATA[Acta Universitaria]]></source>
<year>2016</year>
<volume>26</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>95-104</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="">
<collab>SIAP. Sistema de Información Agroalimentaria y Pesquera</collab>
<source><![CDATA[Cierre de la producción agrícola por estado]]></source>
<year>2017</year>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[S. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Trinidad]]></surname>
<given-names><![CDATA[S. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Reyna]]></surname>
<given-names><![CDATA[T. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Castillo]]></surname>
<given-names><![CDATA[J. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Escalante]]></surname>
<given-names><![CDATA[E. A.]]></given-names>
</name>
<name>
<surname><![CDATA[de León González]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Respuesta de genotipos de amaranto a densidades de población]]></article-title>
<source><![CDATA[Rev. Fitotec. Mex]]></source>
<year>2006</year>
<volume>29</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>307-12</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
