<?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>0377-9424</journal-id>
<journal-title><![CDATA[Agronomía Costarricense]]></journal-title>
<abbrev-journal-title><![CDATA[Agron. Costarricense]]></abbrev-journal-title>
<issn>0377-9424</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica. Colegio de Ingenieros y Agrónomos. Ministerio de Agricultura y Ganadería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0377-94242023000100059</article-id>
<article-id pub-id-type="doi">10.15517/rac.v47i1.53949</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de herbicidas preemergentes para el control de arvenses en camote]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of pre-emergent herbicides for weed control in sweet potato]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera-Murillo]]></surname>
<given-names><![CDATA[Franklin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Picado-Arroyo]]></surname>
<given-names><![CDATA[Grettel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica Estación Experimental Agrícola Fabio Baudrit Moreno ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica Estación Experimental Agrícola Fabio Baudrit Moreno ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>47</volume>
<numero>1</numero>
<fpage>59</fpage>
<lpage>71</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0377-94242023000100059&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0377-94242023000100059&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0377-94242023000100059&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Introducción. Un manejo inadecuado de las arvenses puede disminuir el rendimiento del camote (Ipomoea batatas (L.) Lam.) y en Costa Rica son escasas las publicaciones que documenten alternativas de control químico en este cultivo. Objetivo. Identificar herbicidas preemergentes efectivos en el control de las arvenses y selectivos al camote variedad Zanahoria. Materiales y métodos. El experimento se realizó de setiembre a diciembre de 2019 en la Estación Experimental Fabio Baudrit de la Universidad de Costa Rica, Alajuela. Se utilizaron esquejes de 4 a 5 nudos de la variedad de camote Zanahoria, a una densidad de 22 222 plantas por hectárea. Los tratamientos fueron metribuzin 0,6 kg ia.ha-1, pendimetalina 1,5 kg ia.ha-1, clomazone 0,48 kg ia.ha-1, metribuzin 0,6 kg ia.ha-1 + pendimetalina 1,5 kg ia.ha-1, y metribuzin 0,6 kg ia.ha-1 + clomazone 0,48 kg ia.ha-1, aplicados 5 días después del trasplante y en preemergencia de las arvenses. Se consideró además un testigo con deshierba a los 20 y 40 días después de la siembra, y otro con libre crecimiento de arvenses. Se utilizó un diseño experimental de bloques completos al azar, con 7 tratamientos y 4 repeticiones. Resultados. La mezcla metribuzin + clomazone fue el tratamiento químico más eficaz, ya que aún 75 días después de la aplicación presentó un control de arvenses de hoja ancha de 93%, poáceas de 95% y Commelinaceae del 100%, con solo un 4% de cobertura de arvenses y un rendimiento comercial de 13,5 t.ha-1. Estadísticamente la mezcla metribuzin + clomazone presentó un rendimiento comercial igual al testigo con deshierbas (14,1 t.ha-1). El metribuzin causó daños leves en las plantas de camote, pero estas se recuperaron a los 15 días después de la aplicación. La presencia de arvenses durante el ciclo del cultivo redujo en 89% el rendimiento de camotes comercializables. Conclusión. La mejor alternativa química para el manejo de las arvenses y la producción de camotes comercializables fue metribuzin + clomazone.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Introduction. Inadequate weed management can reduce sweet potato (Ipomoea batatas (L.) Lam.) yield and in Costa Rica there are few publications that document chemical control alternatives in this crop. Objective. To identify effective pre-emergent herbicides for weed control and selective for sweet potato variety ''Carrot''. Materials and methods. The experiment was conducted from September to December 2019, at the Experiment Station Fabio Baudrit Moreno of the University of Costa Rica, Alajuela. Cuttings with 4 to 5 nodes of the "Carrot" sweet potato variety were used, at a density of 22 222 plants per hectare. Treatments were metribuzin 0.6 kg ai per ha, pendimethalin 1.5 kg ai per ha, clomazone 0.48 kg ai per ha, metribuzin 0.6 kg ai per ha + pendimethalin 1.5 kg ai per ha, and metribuzin 0.6 kg ai per ha + clomazone 0.48 kg ai per ha, all applied 5 days after transplant and before emerging of weeds. A control was also used with weeding at 20 and 40 days after sowing, and another with free growth of weeds. A randomized complete block experimental design with 7 treatments and 4 replications was used. Results. Metribuzin + clomazone mixture was the most effective chemical treatment, since at 75 days after application it still presented the highest weed control (broadleaf 93%, poaceae 95%, Commelinaceae 100%) with only 4% weed coverage, and a commercial yield of 13.5 t per ha. Statistically the metribuzin + clomazone mixture presented a commercial yield equal to the control with weeding (14.1 t per ha). Metribuzin caused slight damage to sweet potato plants, but they recovered at 15 days after application. The presence of weeds during the crop cycle reduced the yield of marketable sweet potatoes by 89%. Conclusion. The best chemical alternative for weed management and production of marketable sweet potatoes was metribuzin + clomazone.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Malezas]]></kwd>
<kwd lng="es"><![CDATA[competencia]]></kwd>
<kwd lng="es"><![CDATA[herbicidas]]></kwd>
<kwd lng="es"><![CDATA[Ipomoea batatas]]></kwd>
<kwd lng="es"><![CDATA[rendimiento]]></kwd>
<kwd lng="en"><![CDATA[Weeds]]></kwd>
<kwd lng="en"><![CDATA[competition]]></kwd>
<kwd lng="en"><![CDATA[herbicides]]></kwd>
<kwd lng="en"><![CDATA[Ipomoea batatas]]></kwd>
<kwd lng="en"><![CDATA[yield]]></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[Alam]]></surname>
<given-names><![CDATA[KM.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comprehensive review of sweet potato (Ipomoea batatas (L.) Lam): Revisiting the associated health benefits.]]></article-title>
<source><![CDATA[Trends in Food Science &amp; Technology]]></source>
<year>2021</year>
<volume>115</volume>
<page-range>12-529</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Anaya]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[AL]]></given-names>
</name>
<name>
<surname><![CDATA[Guerrero]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Porlles]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Woolcott]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Erazo]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Producción más limpia de etanol carburante de Ipomoea batata (camote) y su impacto en la contabilidad de reserva energética y el desarrollo sostenible del Perú.]]></article-title>
<source><![CDATA[Rev. Per. Quím. Ing. Quím.]]></source>
<year>2008</year>
<volume>11</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>29-35</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Beam]]></surname>
<given-names><![CDATA[CS]]></given-names>
</name>
<name>
<surname><![CDATA[Jennings]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
<name>
<surname><![CDATA[Monks]]></surname>
<given-names><![CDATA[WD]]></given-names>
</name>
<name>
<surname><![CDATA[Schultheis]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
<name>
<surname><![CDATA[Chaudhari]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of herbicides on the development of internal necrosis of sweet potato.]]></article-title>
<source><![CDATA[Weed Technology]]></source>
<year>2017</year>
<volume>31</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>863-9</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Castillo]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Brenes]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Esker]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez-Alpizar]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación agronómica de trece genotipos de camote (Ipomoea batatas L.).]]></article-title>
<source><![CDATA[Agronomía Costarricense]]></source>
<year>2014</year>
<volume>38</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>67-81</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dittmar]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Boyd]]></surname>
<given-names><![CDATA[NS.]]></given-names>
</name>
</person-group>
<source><![CDATA[Weed management in sweet potato]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[dos Santos]]></surname>
<given-names><![CDATA[AE]]></given-names>
</name>
<name>
<surname><![CDATA[De Andrade JR.]]></surname>
<given-names><![CDATA[CV]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
<name>
<surname><![CDATA[Dos Santos]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[Medina]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Teixeira]]></surname>
<given-names><![CDATA[MC.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sensitivity of sweet potato genotypes to clomazone and weed interference.]]></article-title>
<source><![CDATA[Rev. Caatinga, Mossoró, Brasil]]></source>
<year>2018</year>
<volume>31</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>352-9</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[El Sheikha]]></surname>
<given-names><![CDATA[FA]]></given-names>
</name>
<name>
<surname><![CDATA[Ray]]></surname>
<given-names><![CDATA[CR.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Potential impacts of bioprocessing of sweet potato: Review.]]></article-title>
<source><![CDATA[Critical Reviews in Food Science and Nutrition]]></source>
<year>2017</year>
<volume>57</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>455-71</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="">
<collab>FAO</collab>
<source><![CDATA[FAOSTAT: Producción y rendimiento de batatas en el mundo 1994-2020]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Frans]]></surname>
<given-names><![CDATA[RT]]></given-names>
</name>
<name>
<surname><![CDATA[Albert]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Marx]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Crowley]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Experimental design and techniques for measuring and analyzing plant responses to weed control practices]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Camper]]></surname>
<given-names><![CDATA[ND]]></given-names>
</name>
</person-group>
<source><![CDATA[Research methods in weed science]]></source>
<year>1986</year>
<page-range>29-46</page-range><publisher-loc><![CDATA[Champaign, IL ]]></publisher-loc>
<publisher-name><![CDATA[Southern Weed Science Society.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Glaze]]></surname>
<given-names><![CDATA[CN]]></given-names>
</name>
<name>
<surname><![CDATA[Hall]]></surname>
<given-names><![CDATA[RM.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cultivation and herbicides for weed control in sweet potato (Ipomoea batatas).]]></article-title>
<source><![CDATA[Weed Technology]]></source>
<year>1990</year>
<volume>4</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>518-23</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Harrison Jr]]></surname>
<given-names><![CDATA[HF]]></given-names>
</name>
<name>
<surname><![CDATA[Jackson]]></surname>
<given-names><![CDATA[DM.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Greenhouse assessment of differences in clomazone tolerance among sweet potato cultivars.]]></article-title>
<source><![CDATA[Weed Technology]]></source>
<year>2011</year>
<volume>25</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>501-5</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Holdridge]]></surname>
<given-names><![CDATA[RL.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ecología basada en zonas de vida]]></source>
<year>1982</year>
<page-range>216</page-range><publisher-loc><![CDATA[San José, Costa Rica ]]></publisher-loc>
<publisher-name><![CDATA[IICA.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hormenoo]]></surname>
<given-names><![CDATA[AY]]></given-names>
</name>
<name>
<surname><![CDATA[Ekyen]]></surname>
<given-names><![CDATA[SO]]></given-names>
</name>
<name>
<surname><![CDATA[Bonsu]]></surname>
<given-names><![CDATA[KO]]></given-names>
</name>
<name>
<surname><![CDATA[Torve]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Bright]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Voegborlo]]></surname>
<given-names><![CDATA[RB.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of some herbicide residues in sweet potato.]]></article-title>
<source><![CDATA[Cogent Food And Agriculture (Ghana)]]></source>
<year>2021</year>
<volume>7</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>1-9</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="">
<collab>INEC</collab>
<source><![CDATA[Censo Agropecuario 2014]]></source>
<year>2022</year>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Levett]]></surname>
<given-names><![CDATA[MP.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of various hand-weeding programmes on yield and components of yield of sweet potato (Ipomoea batatas) grown in the tropical lowlands of Papua New Guinea.]]></article-title>
<source><![CDATA[. Agric. Sci. (Camb.)]]></source>
<year>1992</year>
<volume>118</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>63-70</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lopes]]></surname>
<given-names><![CDATA[CA]]></given-names>
</name>
<name>
<surname><![CDATA[Vilela-Resende]]></surname>
<given-names><![CDATA[JT]]></given-names>
</name>
<name>
<surname><![CDATA[Machado]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Perez-Guerra]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Vilela-Resende]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Producción de alcohol a partir de genotipos de batata (Ipomoea batatas (L.) Lam.) en medios fermentativos.]]></article-title>
<source><![CDATA[Acta Agron.]]></source>
<year>2018</year>
<volume>67</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>231-7</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lugo-Torres]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Diaz]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Weed control in sweet potato. (Ipomoea batatas (L.) Lam.).]]></article-title>
<source><![CDATA[J. Agrie. Univ. P.R.]]></source>
<year>2007</year>
<volume>91</volume>
<numero>3-4</numero>
<issue>3-4</issue>
<page-range>161-7</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Meyers]]></surname>
<given-names><![CDATA[LS]]></given-names>
</name>
<name>
<surname><![CDATA[Jennings]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
<name>
<surname><![CDATA[Monks]]></surname>
<given-names><![CDATA[WD.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Herbicide-based weed management programs for palmer amaranth (Amaranthus palmeri) in sweet potato.]]></article-title>
<source><![CDATA[Weed Technology]]></source>
<year>2013</year>
<volume>27</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>331-40</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Meyers]]></surname>
<given-names><![CDATA[LS]]></given-names>
</name>
<name>
<surname><![CDATA[Jennings]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
<name>
<surname><![CDATA[Monks]]></surname>
<given-names><![CDATA[WD.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sweet potato tolerance and palmer amaranth control with metribuzin and oryzalin.]]></article-title>
<source><![CDATA[Weed Technology]]></source>
<year>2017</year>
<volume>31</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>903-7</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Meyers]]></surname>
<given-names><![CDATA[LS]]></given-names>
</name>
<name>
<surname><![CDATA[Chaudhari]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Jennings]]></surname>
<given-names><![CDATA[KM]]></given-names>
</name>
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[KD]]></given-names>
</name>
<name>
<surname><![CDATA[Shankle]]></surname>
<given-names><![CDATA[WM.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Response of sweet potato to pendimethalin application rate and timing.]]></article-title>
<source><![CDATA[Weed Technology]]></source>
<year>2019</year>
<volume>34</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>301-4</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Motsenbocker]]></surname>
<given-names><![CDATA[EC]]></given-names>
</name>
<name>
<surname><![CDATA[Monaco]]></surname>
<given-names><![CDATA[JT.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Differential tolerance of sweet potato (Ipomoea batatas) clones to metribuzin.]]></article-title>
<source><![CDATA[Weed Technology]]></source>
<year>1993</year>
<volume>7</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>349-54</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Seem]]></surname>
<given-names><![CDATA[EJ]]></given-names>
</name>
<name>
<surname><![CDATA[Creamer]]></surname>
<given-names><![CDATA[GN]]></given-names>
</name>
<name>
<surname><![CDATA[Monks]]></surname>
<given-names><![CDATA[WD.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Critical weed-free period for Beauregard' sweet potato (Ipomoea batatas).]]></article-title>
<source><![CDATA[Weed Technology]]></source>
<year>2003</year>
<volume>17</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>686-95</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tai-Hua]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Peng-Gao]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sweet potato: origin and production]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Tai-Hua]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Peng-Gao]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Sweet potato: chemistry, processing and nutrition.]]></source>
<year>2019</year>
<page-range>293</page-range><publisher-loc><![CDATA[Netherlands ]]></publisher-loc>
<publisher-name><![CDATA[Academic Press Elservier.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Talatala]]></surname>
<given-names><![CDATA[RL]]></given-names>
</name>
<name>
<surname><![CDATA[Mariscal]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Secreto]]></surname>
<given-names><![CDATA[AC.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Critical periods for weed control in sweet potato.]]></article-title>
<source><![CDATA[Philipp. J. Weed Sci]]></source>
<year>1978</year>
<volume>5</volume>
<page-range>1-6</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
