<?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>0185-3309</journal-id>
<journal-title><![CDATA[Revista mexicana de fitopatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fitopatol]]></abbrev-journal-title>
<issn>0185-3309</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Fitopatología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-33092021000400020</article-id>
<article-id pub-id-type="doi">10.18781/r.mex.fit.2021-20</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[COVID-19 impacts on the guava crop production system in Calvillo, Aguascalientes, Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Impacto de COVID-19 en el sistema de producción del Guayabo en Calvillo, Aguascalientes, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Gaona]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Padilla-Ramírez]]></surname>
<given-names><![CDATA[José Saúl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perales-Segovia]]></surname>
<given-names><![CDATA[Catarino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castañeda-Cabrera]]></surname>
<given-names><![CDATA[Cecilio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda-Salcedo]]></surname>
<given-names><![CDATA[Mario A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[ Pabellón de Arteaga]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico El Llano  ]]></institution>
<addr-line><![CDATA[El Llano Aguascalientes]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[Apatzingán Mich]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>39</volume>
<numero>spe</numero>
<fpage>372</fpage>
<lpage>383</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-33092021000400020&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-33092021000400020&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-33092021000400020&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract. The COVID-19 pandemic, caused by SARS-CoV-2, caused productive disruptions in the guava production system of the municipality of Calvillo, Aguascalientes. These disruptions included delays in the application of phytosanitary management measures against weevils and fruit flies, pests of quarantine, and economic importance, due to the appearance of positive cases among operational and technical personnel. Manual harvesting, an activity that requires large crews of agricultural workers, was delayed due to labor shortages. The cost and supply of fertilizers and pesticides were also affected due to problems in the supply chains of agro-inputs. The sale price of guava in supply centers and local markets fell on average from 10.83 to 10 MN/kg during the months of highest demand due to a 60% reduction in agricultural activities. In Calvillo, the return of Mexican migrants from the US and the presence of asymptomatic cases influenced the spread of SARS-CoV-2 among the local rural community.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen. La pandemia COVID-19, causada por SARS-CoV-2, ha ocasionado problemas productivos al sistema producto guayaba en el municipio de Calvillo, Aguascalientes. Incluye retraso de medidas de manejo fitosanitario en campañas contra picudo y moscas de la fruta, de importancia cuarentenaria y económica, debido a la ocurrencia de COVID-19 entre personal técnico operativo. La cosecha manual, actividad que requiere de cuadrillas numerosas de trabajadores agrícolas, se retrasó por escasez de jornales. El costo y provisión de fertilizantes y pesticidas también se afectó debido a problemas en las cadenas de suministro de agro-insumos, tales como el transporte, almacenamiento y distribución. El precio de venta de guayaba en centrales de abasto y mercados locales se redujo en promedio de 10.83 a 10 MN/kg en meses de mayor demanda debido a la reducción de operaciones hasta del 60%. En Calvillo, se percibió el retorno de migrantes mexicanos debido al COVID-19 y a infecciones asintomáticas en la diseminación de SARS-CoV-2 entre la comunidad rural.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Psidium guajava]]></kwd>
<kwd lng="en"><![CDATA[Calvillo]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Commercialization]]></kwd>
<kwd lng="es"><![CDATA[Psidium guajava]]></kwd>
<kwd lng="es"><![CDATA[Calvillo]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[Comercialización]]></kwd>
</kwd-group>
</article-meta>
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