<?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>1659-1321</journal-id>
<journal-title><![CDATA[Agronomía Mesoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Agron. Mesoam]]></abbrev-journal-title>
<issn>1659-1321</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-13212024000100003</article-id>
<article-id pub-id-type="doi">10.15517/am.2024.54654</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Selectividad de herbicidas en camote (Ipomoea batatas (L.) Lam.) variedad Criollo]]></article-title>
<article-title xml:lang="en"><![CDATA[Herbicide selectivity in sweet potato (Ipomoea batatas (L.) Lam.) Criollo variety]]></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 Programa Manejo Integrado de Malezas]]></institution>
<addr-line><![CDATA[ Alajuela]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica Estación Experimental Agrícola Fabio Baudrit Moreno Programa Manejo Integrado de Malezas]]></institution>
<addr-line><![CDATA[ Alajuela]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>35</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-13212024000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-13212024000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-13212024000100003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Introducción. El camote (Ipomoea batatas (L) Lam) es sensible a la competencia por arvenses, cuyo control químico en Costa Rica se dificulta por la limitada información local generada sobre selectividad de herbicidas. Objetivo. Determinar la selectividad de seis herbicidas aplicados en diferentes etapas de desarrollo al camote Criollo y su efecto en la cobertura, biomasa y rendimiento del cultivo. Materiales y métodos. Entre agosto y diciembre 2021, se realizaron tres experimentos en la Estación Experimental Agrícola Fabio Baudrit Moreno, Universidad de Costa Rica, Alajuela, Costa Rica. Estos incluyeron la aplicación de herbicidas (en kg i.a. ha-1) de la siguiente manera: a) experimento 1: 0,36 de metribuzin, 1,50 de pendimetalina, 0,48 de clomazone, 0,075 de halosulfuron, 1,00 de linuron y 1,25 de metolaclor, aplicados seis días después de la siembra (dds) en diseño de bloques al azar con cuatro repeticiones; b) experimento 2: 1,00 de linuron y 0,36 de metribuzin, aplicados a los -1, 15 y 30 dds, en diseño de bloques al azar con arreglo factorial 2x3 y tres repeticiones; y c) experimento 3: 0,075 de halosulfuron y 0,36 de metribuzin, mezclado con 0,125 de fluazifop-p-butil en diseño de bloques al azar con tres repeticiones. En todos los casos se realizó deshierba 15 y 30 dds. Resultados. En ninguno de los tres experimentos se vio afectada la producción de raíces reservantes. Experimento 1: solo el halosulfuron causó daños leves en las plantas; ningún herbicida afectó la producción de biomasa aérea. Experimento 2: solo el linuron y metribuzin aplicados 15 y 30 dds causaron daños leves. Experimento 3: las mezclas causaron daños temporales en las plantas. Conclusiones. Los herbicidas evaluados fueron selectivos al camote variedad Criollo y no afectaron el rendimiento de raíces reservantes comercializables; solo halosulfuron causó daños leves en todas las formas de aplicación, y metribuzin y linuron solo en aplicaciones tardías.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction.  Sweet potato (Ipomoea batatas (L) Lam.) is sensitive to weed competition, and chemical control in Costa Rica is challenging due to limited local information on herbicide selectivity. Objective. To determine the selectivity of six herbicides applied at different stages of development to Criollo sweet potatoes and their effect on coverage, biomass, and crop yield. Materials and methods. Between August and December 2021, three experiments were conducted at the Fabio Baudrit Moreno Agricultural Experimental Station, Universidad de Costa Rica, Alajuela, Costa Rica. Herbicides were applied (in kg a.i. ha-1) as follows: a) Experiment 1: 0.36 of metribuzin, 1.50 of pendimethalin, 0.48 of clomazone, 0.075 of halosulfuron, 1.00 of linuron, and 1.25 of metolachlor, applied six days after planting (dap) in a randomized block design with four repetitions; b) Experiment 2: 1.00 of linuron and 0.36 of metribuzin 0.36, applied at -1, 15 and 30 dap, in a randomized block design with a 2x3 factorial arrangement and three repetitions; and c) Experiment 3: 0.075 of halosulfuron and 0.36 of metribuzin, mixed with 0.125 of fluazifop-p-butyl in a randomized block design with three repetitions. Weeding was performed at 15 and 30 dap in all cases. Results. Root yield was not affected in any of the three experiments. Experiment 1: Only halosulfuron caused mild damage to the plants; no herbicide affected above-ground biomass production. Experiment 2: Only linuron and metribuzin applied at 15 and 30 dap caused mild damage. Experiment 3: The mixtures caused temporary damage to the plants. Conclusions. The evaluated herbicides were selective to the Criollo sweet potatoes, and did not affect the yield of marketable storage roots. Only halosulfuron caused mild damage in all application forms, and metribuzin and linuron only in late applications.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[batata]]></kwd>
<kwd lng="es"><![CDATA[arvenses]]></kwd>
<kwd lng="es"><![CDATA[fitotoxicidad]]></kwd>
<kwd lng="es"><![CDATA[rendimiento]]></kwd>
<kwd lng="en"><![CDATA[batata]]></kwd>
<kwd lng="en"><![CDATA[weeds]]></kwd>
<kwd lng="en"><![CDATA[phytotoxicity]]></kwd>
<kwd lng="en"><![CDATA[yield]]></kwd>
</kwd-group>
</article-meta>
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