<?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>S2007-09342020000601447</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v11i6.2222</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hidrogel acrilato de potasio como sustrato en cultivo de pepino y jitomate]]></article-title>
<article-title xml:lang="en"><![CDATA[Potassium acrylate hydrogel as a substrate in cucumber and tomato cultivation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortega-Torres]]></surname>
<given-names><![CDATA[Adrián Esteban]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores Tejeida]]></surname>
<given-names><![CDATA[Laura Berenice]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guevara-González]]></surname>
<given-names><![CDATA[Ramón Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rico-García]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Soto-Zarazúa]]></surname>
<given-names><![CDATA[Genaro Martín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Querétaro Facultad de Ingeniería Campus Amazcala ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>6</numero>
<fpage>1447</fpage>
<lpage>1455</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342020000601447&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342020000601447&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342020000601447&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La agricultura es la base de la alimentación, se desarrolla en suelo e hidroponía. La hidroponía se explica cómo cultivos sin suelo, en soluciones nutritivas, para el caso del tomate y del pepino es en sustrato. Los sustratos han incrementado la productividad, con uso eficiente de agua y fertilizantes. Si la agricultura consume 70% de agua y en gasto 30% es fertilizantes, el objetivo de este trabajo fue utilizar hidrogel de acrilato de potasio por su capacidad de disminuir la pérdida de fertilizantes como ser reserva de agua, permitiendo mantener la producción de tomate y pepino. La investigación se realizó en Querétaro en 2017. Se evaluó diferentes capacidades de saturación del hidrogel para sus propiedades, la mezcla de sustrato y el rendimiento de tomate y pepino, encontrando diferencias significativas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Agriculture is the basis of food, it develops in soil and hydroponics. Hydroponics is explained as crops without soil, in nutritive solutions, in the case of tomato and cucumber it is in substrate. Substrates have increased productivity, with efficient use of water and fertilizers. If agriculture consumes 70% of water and spending 30% is fertilizers, the objective of this work was to use potassium acrylate hydrogel for its ability to reduce the loss of fertilizers, such as reserving water, allowing to maintain tomato production and cucumber. The research was carried out in Querétaro in 2017. Different saturation capacities of the hydrogel were evaluated for its properties, the mixture of substrate and the yield of tomato and cucumber, finding significant differences.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[fertilizantes]]></kwd>
<kwd lng="es"><![CDATA[hidroponía]]></kwd>
<kwd lng="es"><![CDATA[hortalizas]]></kwd>
<kwd lng="en"><![CDATA[fertilizers]]></kwd>
<kwd lng="en"><![CDATA[hydroponics]]></kwd>
<kwd lng="en"><![CDATA[vegetables]]></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[Bedoya]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Salazar]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimización del uso de fertilizantes para el cultivo de café]]></article-title>
<source><![CDATA[Rev. Mex. Cienc. Agric.]]></source>
<year>2014</year>
<volume>8</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1433-9</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cajamar]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Análisis de la campaña hortofrutícola de Almería 2005/2006. Cajamar (Caja Rural Intermediterránea)]]></source>
<year>2006</year>
<page-range>38</page-range><publisher-loc><![CDATA[Almería, Spain ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cuadrado-García]]></surname>
<given-names><![CDATA[L. N]]></given-names>
</name>
<name>
<surname><![CDATA[López-Roa]]></surname>
<given-names><![CDATA[E. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Bojaca-Aldana]]></surname>
<given-names><![CDATA[C. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Almanza-Merchan]]></surname>
<given-names><![CDATA[P. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nitrogen influence in the production of tomato ( Lycopersicum esculentum L .) seeded in substrate in Sutamarchán (Boyacá)]]></article-title>
<source><![CDATA[Cienc. Agric.]]></source>
<year>2014</year>
<volume>11</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>85-90</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dabhi]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Bhatt]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Pandit]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Student]]></surname>
<given-names><![CDATA[P. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[super absorbent polymers - an innovative water saving technique for optimizing crop]]></article-title>
<source><![CDATA[Inter. J. Innov. Res. Sci. Eng. Technol.]]></source>
<year>2013</year>
<volume>2</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>5333-40</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gholamhoseini]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Habibzadeh]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Ataei]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Hemmati]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Ebrahimian]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Zeolite and hydrogel improve yield of greenhouse cucumber in soil-less medium under water limitation]]></article-title>
<source><![CDATA[Rhizosphere]]></source>
<year>2018</year>
<volume>6</volume>
<page-range>7-10</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hemvichian]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Chanthawong]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Suwanmala]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Synthesis and characterization of superabsorbent polymer prepared by radiation-induced graft copolymerization of acrylamide onto carboxymethyl cellulose for controlled release of agrochemicals]]></article-title>
<source><![CDATA[Radiation Physics and Chemistry]]></source>
<year>2014</year>
<volume>103</volume>
<page-range>167-71</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Irigoyen]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Muro]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Domen]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evolution of organic matter and drainages in wood fibre and coconut fibre substrates]]></article-title>
<source><![CDATA[Sci. Hortic.]]></source>
<year>2009</year>
<volume>122</volume>
<page-range>269-74</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Madaghiele]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Maffezzoli]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sannino]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Scalera]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Demitri]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Potential of cellulose-based superabsorbent hydrogels as water reservoir in agriculture]]></article-title>
<source><![CDATA[Inter. J. Polymer Sci.]]></source>
<year>2013</year>
<volume>2013</volume>
<page-range>1-6</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Montesano]]></surname>
<given-names><![CDATA[F. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Parente]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Santamaria]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Sannino]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Serio]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biodegradable superabsorbent hydrogel increaseswater retention properties of growing media and plant growth]]></article-title>
<source><![CDATA[Agric. Agric. Sci. Procedia]]></source>
<year>2015</year>
<volume>4</volume>
<page-range>451-8</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Marcano]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Acevedo]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Contreras]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Jiménez]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Escalona]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Crecimiento y desarrollo del cultivo pepino (Cucumis sativus L.) en la zona hortícola de Humocaro bajo, estado Lara, Venezuela]]></article-title>
<source><![CDATA[Rev. Mex. Cienc. Agríc.]]></source>
<year>2012</year>
<volume>3</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>1629-36</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oksi]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Magnucka]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Lejcu]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biodegradation of the cross-linked copolymer of acrylamide and potassium acrylate by soil bacteria]]></article-title>
<source><![CDATA[Environ. Sci. Pollut. Res.]]></source>
<year>2016</year>
<volume>23</volume>
<page-range>5969-77</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ortega]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Soto Zarazúa]]></surname>
<given-names><![CDATA[G. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Potassium acrylate: a novelty in hydroponic substrates]]></article-title>
<source><![CDATA[13th International Engineering Congress]]></source>
<year>2017</year>
<publisher-name><![CDATA[CONIIN]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ortega-Martínez]]></surname>
<given-names><![CDATA[L. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-Valenzuela]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Ocampo-Mendoza]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sandoval-Castro]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez Armendáriz]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efficiency of substrates in soil and hydroponic system for greenhouse tomato production]]></article-title>
<source><![CDATA[Rev. Mex. Cienc. Agric.]]></source>
<year>2016</year>
<volume>7</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>643-53</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Renté-Martí]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Nápoles-García]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pablos-Reyes]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Vargas-Batis]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efecto de Canavalia ensiformis (L). En propiedades físicas de un suelo fluvisol diferenciado en Santiago de Cuba]]></article-title>
<source><![CDATA[Cultivos Tropicales]]></source>
<year>2018</year>
<volume>39</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>59-64</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rittmann]]></surname>
<given-names><![CDATA[B. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Mayer]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Westerhoff]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Edwards]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Capturing the lost phosphorus]]></article-title>
<source><![CDATA[Chemosphere]]></source>
<year>2011</year>
<volume>84</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>846-53</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodríguez-Macías]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Alcantar-González]]></surname>
<given-names><![CDATA[E. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Iñiguez-Covarrubias]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Zamora-Natera]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[García-López]]></surname>
<given-names><![CDATA[P. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruiz-López]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Salcedo-Pérez]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Caracterización física y química de sustratos agrícolas a partir de bagazo de agave tequilero]]></article-title>
<source><![CDATA[Interciencia]]></source>
<year>2010</year>
<volume>35</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>515-20</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sayyari]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ghanbari]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of super absorbent polymer A 200 on the growth , yield and some physiological responses in sweet pepper ( Capsicum Annuum L .) under various irrigation regimes]]></article-title>
<source><![CDATA[Inter. J. Agric. Food Res.]]></source>
<year>2012</year>
<volume>1</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>1-11</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shahid]]></surname>
<given-names><![CDATA[S. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Qidwai]]></surname>
<given-names><![CDATA[A. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Anwar]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Ullah]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Rashid]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Improvement in the water retention characteristics of sandy loam soil using a newly synthesized poly (acrylamide-co-acrylic acid)/AlZnFe 2O 4 superabsorbent hydrogel nanocomposite material]]></article-title>
<source><![CDATA[Molecules]]></source>
<year>2012</year>
<volume>17</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>9397-412</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Teres]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Arrieta]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Lucas]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ritter]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación de la densidad real de sustratos de cultivo por medio del método de inmersión]]></article-title>
<source><![CDATA[Inv. Agr. Prod. Veg.]]></source>
<year>1996</year>
<volume>10</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>231-44</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tipanta]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Diego]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Calvache]]></surname>
<given-names><![CDATA[U. M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Respuesta de dos variedades de rosas (Rosa sp.) a la aplicación de dos láminas de fertirriego en combinación con un gel superabsorbente Cayambe Pichincha]]></source>
<year>2008</year>
<publisher-name><![CDATA[XI Congreso Ecuatoriano de la Ciencia del Suelo]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vallejo]]></surname>
<given-names><![CDATA[B. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Barbosa]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Cortés]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Espinosa]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación de la velocidad de liberación de un principio activo para acondicionamiento de suelos desde comprimidos matriciales con base en un hidrogel de acrilamida]]></article-title>
<source><![CDATA[Rev. Col. Cienc. Quím. Farm.]]></source>
<year>2005</year>
<volume>34</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>155-71</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zohuriaan-Mehr]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Kabiri]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Superabsorbent polymer materials: a review]]></article-title>
<source><![CDATA[Iran Polym J.]]></source>
<year>2008</year>
<volume>17</volume>
<page-range>451-47</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
