<?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>S2007-09342016000500993</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Optimización económica de N, P, K y densidades de plantación en maíz y frijol intercalados]]></article-title>
<article-title xml:lang="en"><![CDATA[Economic optimization of N, P, K and planting densities in corn and bean intercropping]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Albino Garduño]]></surname>
<given-names><![CDATA[Rocio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Turrent Fernández]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cortés Flores]]></surname>
<given-names><![CDATA[José Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Estrada]]></surname>
<given-names><![CDATA[Adrián]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza Castillo]]></surname>
<given-names><![CDATA[Ma. del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Volke Haller]]></surname>
<given-names><![CDATA[Victor Hugo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santiago Mejía]]></surname>
<given-names><![CDATA[Horacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Intercultural del Estado de México  ]]></institution>
<addr-line><![CDATA[ Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,INIFAP Campo Experimental Valle de México ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Colegio de Postgraduados Edafología ]]></institution>
<addr-line><![CDATA[ Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Colegio de Postgraduados Genética ]]></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>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>5</numero>
<fpage>993</fpage>
<lpage>1004</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342016000500993&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342016000500993&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342016000500993&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo fue determinar la mejor dosis de fertilizante y densidad de plantación (D) para el cultivo de maíz ´H-155´ y frijol negro arbustivo ´8025´ en tres arreglos topológicos (AT). El criterio de selección fue la mayor ganancia, eficiencia relativa de la tierra (ERT) y eficiencia relativa de la ganancia (ERG). Se estableció un experimento de parcelas divididas en el Campo Experimental Valle de México, en el año 2012. Las parcelas grandes fueron tres AT de maíz y frijol: 1) cultivo simple de maíz y frijol (CSMF), 2) intercalados en dos surcos alternos (MMFF), y 3) intercalados en un surco alterno (MFMF). La parcela chica constó de 25 tratamientos de un diseño central compuesto rotable con 5 niveles de nitrógeno (N), fósforo (P), potasio (K) y D. Se determinó el rendimiento de grano (Ym) y rastrojo (Yr) de maíz y el rendimiento del grano de frijol (Yf). La mayor ganancia ($33 942) se obtuvo en MMFF con la combinación 34-0-40 kg de N-P-K y 29 500 plantas en 0.5 ha de maíz y 11-0-30 kg de N-P-K y 80 000 plantas en 0.5 ha de frijol. En MMFF la máxima ERT fue 1.29 y ERG fue 2.01. La mayor ERT en MFMF fue 1.27 con una ERG de 1.58, ambas asociadas a un nivel alto de Ym de 7.09 t 0.5 ha-1.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective was to determine the best dose of fertilizer and planting density (D) for the cultivation of corn 'H-155' and black bean shrub '8025' three topological arrangements (AT). The selection criterion was the biggest gain, relative efficiency of land (ERT) and relative efficiency of gain (ERG). An experiment is established in split plot in the Valley of Mexico Experimental Station, in 2012. There were three large plots of corn and beans AT: 1) Simple corn and beans (CSMF); 2) intercalated in two alternating rows (MMFF); and 3) interspersed in an alternating groove (MFMF). The small plot consisted of 25 treatments of a rotatable central composite design with 5 levels of nitrogen (N), phosphorus (P), potassium (K) and D. The grain yield (Ym) and stover (Yr) was determined corn and bean grain yield (Yf). The greatest gain ($33 942) was obtained MMFF with the combination 34-0-40 kg of N-P-K and 29 500 plants in 0.5 ha corn and 11-0-30 kg of N-P-K and 80 000 plants 0.5 has of bean. In MMFF maximum ERT was 1.29 and ERG was 2.01. Most ESRD in MFMF was 1.27 with a 1.58 ERG, both associated with a high level of Ym 7.09 0.5 t ha-1.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Zea mays L.]]></kwd>
<kwd lng="es"><![CDATA[Phaseolus vulgaris L.]]></kwd>
<kwd lng="es"><![CDATA[diseño compuesto central rotable e ingresos netos]]></kwd>
<kwd lng="en"><![CDATA[Zea mays L.]]></kwd>
<kwd lng="en"><![CDATA[Phaseolus vulgaris L.]]></kwd>
<kwd lng="en"><![CDATA[central composite design rotatory and net income]]></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[Barrios]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Turrent F]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ariza]]></surname>
<given-names><![CDATA[F. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Otero]]></surname>
<given-names><![CDATA[S. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Michel]]></surname>
<given-names><![CDATA[A. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Interacción genotipos x prácticas de manejo en el rendimiento de grano de híbridos de maíz]]></article-title>
<source><![CDATA[Agric. Téc. Méx.]]></source>
<year>2008</year>
<volume>34</volume>
<page-range>85-90</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barrios]]></surname>
<given-names><![CDATA[A. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Turrent]]></surname>
<given-names><![CDATA[F. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[G. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Cortés]]></surname>
<given-names><![CDATA[F. J. I.]]></given-names>
</name>
<name>
<surname><![CDATA[OrtizSolorio]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimización tecnológica simultánea para tres híbridos de maíz con precisión definida a priori]]></article-title>
<source><![CDATA[Terra Latinoam.]]></source>
<year>2003</year>
<volume>21</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>127-35</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bourges]]></surname>
<given-names><![CDATA[H. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[El maíz: su importancia en la alimentación de la población mexicana]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Álvarez-Buylla]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Piñeyro]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<source><![CDATA[el maíz en peligro ante los transgénicos. Un análisis integral sobre el caso de México]]></source>
<year>2013</year>
<page-range>231-47</page-range><publisher-loc><![CDATA[México ]]></publisher-loc>
<publisher-name><![CDATA[UNAM-UCCS]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="">
<collab>FIRA</collab>
<source><![CDATA[Agrocostos para cultivo de maíz y frijol del ciclo primavera verano del año 2012]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hai-Yong]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Hua]]></surname>
<given-names><![CDATA[J. Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Hao]]></surname>
<given-names><![CDATA[J. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Xing]]></surname>
<given-names><![CDATA[G. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Christie]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Fu]]></surname>
<given-names><![CDATA[S, Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Long]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dynamics of root length and distribution and shoot biomass of maize as affected by intercropping with different companion crops and phosphorus application rates]]></article-title>
<source><![CDATA[Field Crops Res.]]></source>
<year>2013</year>
<volume>150</volume>
<page-range>52-62</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="">
<collab>INIFAP</collab>
<source><![CDATA[Lista de precios y tarifas]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Johanne]]></surname>
<given-names><![CDATA[P. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Lynch]]></surname>
<given-names><![CDATA[J. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Complementarity in root architecture for nutrient uptake in ancient maize/bean and maize/bean/ squash polycultures]]></article-title>
<source><![CDATA[Ann. Bot.]]></source>
<year>2012</year>
<volume>110</volume>
<page-range>521-34</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lesoing]]></surname>
<given-names><![CDATA[G. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Francis]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Strip intercropping effects on yield and yield com-ponents of corn, grain sorghum, and soybean]]></article-title>
<source><![CDATA[Agron. J.]]></source>
<year>1999</year>
<volume>91</volume>
<page-range>807-13</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Jianhao]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Fusuo]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Xialolin]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Sicun]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Zdenko]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Wheat/maize or wheat/soybean strip intercropping I. Yield advantage and interespecific interactions on nutrients]]></article-title>
<source><![CDATA[Field Crops Res.]]></source>
<year>2001</year>
<volume>71</volume>
<page-range>123-37</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lithourgidis]]></surname>
<given-names><![CDATA[A. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Dordas]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Damalas]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Vlachostergios]]></surname>
<given-names><![CDATA[D. N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Annual intercrops: an alternative pathway for sustainable agriculture]]></article-title>
<source><![CDATA[Aust. J. Crop Sci.]]></source>
<year>2011</year>
<volume>5</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>396-410</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Malézieux]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Crozat]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Dupraz]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Lawrans]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Makowski]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Ozier-Lafontaine]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Rapidel]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Tourdonnet]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Valantin]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mixing plant species in cropping systems: concepts, tools and models. A review]]></article-title>
<source><![CDATA[Agron. Sustainable Dev.]]></source>
<year>2009</year>
<volume>29</volume>
<page-range>43-62</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[G. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[D. M. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Diseño de experimentos con fertilizantes]]></source>
<year>1996</year>
<publisher-loc><![CDATA[Montecillo, Estado de México ]]></publisher-loc>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo y Colegio de Postgraduados en Ciencias Agrícolas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Matusso]]></surname>
<given-names><![CDATA[J. M. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Mugwe]]></surname>
<given-names><![CDATA[J. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Mucheru]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of Different Maize (Zea mays L.)-soybean (Glycine max (L.) Merrill) intercropping patterns on yields and its economics.)]]></article-title>
<source><![CDATA[Adv. J. Agric. Res.]]></source>
<year>2014</year>
<volume>2</volume>
<page-range>38-48</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[O'Callaghan]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Maende]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Wyseure]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modelling the intercropping of maize and beans in Kenya]]></article-title>
<source><![CDATA[Comput. Electron. Agric.]]></source>
<year>1994</year>
<volume>11</volume>
<page-range>351-65</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rezaei]]></surname>
<given-names><![CDATA[Ch. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Dabbagh]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Shakiba]]></surname>
<given-names><![CDATA[M. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Ghassemi]]></surname>
<given-names><![CDATA[G. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Aharizad]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Shekari]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Intercropping of maize (Zea mays L.) and faba bean (Vicia faba L.) at different plant population densities]]></article-title>
<source><![CDATA[Afr. J. Agric. Res.]]></source>
<year>2011</year>
<volume>6</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>1786-93</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<collab>SAS Institute</collab>
<source><![CDATA[The SAS® System for Windows® (Ver. 9.0)]]></source>
<year>2005</year>
<publisher-loc><![CDATA[Cary, NC, USA ]]></publisher-loc>
<publisher-name><![CDATA[SAS Institute Inc.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="">
<collab>SE</collab>
<source><![CDATA[Sistema Nacional de Información e Integración de Mercados. Precios del año 2012]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Seran]]></surname>
<given-names><![CDATA[T. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Brintha]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Review on maize based intercropping]]></article-title>
<source><![CDATA[J. Agron.]]></source>
<year>2010</year>
<volume>9</volume>
<page-range>135-45</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tsubo]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Walker]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A model of radiation interception and use by a maize-bean intercrop canopy]]></article-title>
<source><![CDATA[Agric. For. Meteorol.]]></source>
<year>2002</year>
<volume>110</volume>
<page-range>203-15</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turrent]]></surname>
<given-names><![CDATA[F. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Barros]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Álvarez]]></surname>
<given-names><![CDATA[B, E.]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Hazam]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Eccardi]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Piñeyro]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[El maíz transgénico en México (en 15 píldoras)]]></source>
<year>2013</year>
<publisher-loc><![CDATA[México ]]></publisher-loc>
<publisher-name><![CDATA[UCCS]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vandermeer]]></surname>
<given-names><![CDATA[J. H.]]></given-names>
</name>
</person-group>
<source><![CDATA[The ecology of intercropping]]></source>
<year>1989</year>
<publisher-loc><![CDATA[Australia ]]></publisher-loc>
<publisher-name><![CDATA[Cambridge University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Volke]]></surname>
<given-names><![CDATA[H. V.]]></given-names>
</name>
</person-group>
<source><![CDATA[Optimización de insumos de la producción en la agricultura]]></source>
<year>1982</year>
<publisher-loc><![CDATA[Montecillo, Estado de México ]]></publisher-loc>
<publisher-name><![CDATA[Colegio de Postgraduados en Ciencias Agrícolas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Volke]]></surname>
<given-names><![CDATA[H. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Turrent]]></surname>
<given-names><![CDATA[F. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Castillo]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Diseños de tratamientos y estimación de funciones de respuesta en la investigación agrícola]]></source>
<year>2005</year>
<publisher-loc><![CDATA[Montecillo, Estado de México ]]></publisher-loc>
<publisher-name><![CDATA[Colegio de Postgraduados en Ciencias Agrícolas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Willey]]></surname>
<given-names><![CDATA[R. W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Resource use in intercropping systems]]></article-title>
<source><![CDATA[Agric. Water Manage.]]></source>
<year>1990</year>
<volume>17</volume>
<page-range>215-31</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
