<?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>S0185-33092024000100300</article-id>
<article-id pub-id-type="doi">10.18781/r.mex.fit.2209-4</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Escala diagramática para cuantificar la severidad de mancha café en el cultivo de haba]]></article-title>
<article-title xml:lang="en"><![CDATA[Diagrammatic scale to quantify the severity of Ascochyta blight in broad bean crops]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Reyes]]></surname>
<given-names><![CDATA[Ernesto Alonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castañeda-Vildózola]]></surname>
<given-names><![CDATA[Álvaro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Pale]]></surname>
<given-names><![CDATA[Jesús Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[ContrerasRendón]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fragoso-Benhumea]]></surname>
<given-names><![CDATA[Juyma Mayvé]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Velasco]]></surname>
<given-names><![CDATA[Rómulo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de México Facultad de Ciencias Agrícolas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de Morelos  ]]></institution>
<addr-line><![CDATA[Tenancingo Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>42</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-33092024000100300&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-33092024000100300&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-33092024000100300&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo/antecedentes:  El objetivo de esta investigación fue diseñar y validar una escala diagramática de severidad de la mancha café en haba.  Materiales y Métodos:  En tres plantaciones comerciales, se recolectaron 120 foliolos con diferente nivel de daño de mancha café, realizando una selección visual a partir de la sintomatología. Se digitalizaron 60 foliolos para evaluarse con el software APS PRESS ©Assess 2.0 y determinar el valor de la severidad real de cada foliolo.  Resultados:  Los valores de severidad permitieron generar una escala diagramática conformada por seis clases diferentes 0(0.0), 1(0.1-6.0), 2(6.1-10.0), 3(10.1-15.0), 4(15.1-40.0), 5(&gt; 40.1-100). 20 evaluadores sin experiencia realizaron la primera evaluación visual (sin escala diagramática) de los foliolos con diferentes grados de daño. Posteriormente, se realizó una segunda evaluación, con 10 evaluadores, con apoyo de la escala. Los resultados obtenidos de cada evaluador se analizaron mediante una regresión lineal simple obteniendo valores de r2= 0.0042 a 0.8748, &#946;0 de 0.51 a 9.11, y &#946;1 de 0.132 a 0.925, sin uso de escala. Con uso de escala se obtuvieron valores de r2= 0.9143 a 0.9851, &#946;0 de 0.001 a 0.911 y &#946;1&lt;0.001.  Conclusión:  La escala diagramática de severidad generada fue validada y reproducible, mostrando una alta confiabilidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective/background:  The objective of this study was to design and validate a diagrammatic severity scale of brown spot on broad bean.  Materials and methods:  We collected 120 leaflets with different level of brown spot damage from commercial crops in the Toluca Valley, which were visually selected based on the expressed symptomology. Sixty leaflets were scanned for evaluation with the software APS PRESS ©Assess 2.0 to determine the real severity value for each leaflet.  Results:  The damage values allowed us to generate a diagrammatic scale consisting of six different classes: 0(0.0), 1(0.1-6.0), 2(6.1-10.0), 3(10.1-15.0), 4(15.1-40.0), 5(&gt; 40.1-100). The leaflets were visually examined by evaluators who had no prior experience. The results from each evaluator were analyzed with a simple linear regression, obtaining r2 values from 0.0042 to 0.8748, &#946;0 de 0.51 a 9.11, y &#946;1 de 0.132 a 0.925. Using a scale, r2 values were obtained 0.9143 to 0.985, &#946;0 de 0.001 a 0.911 y &#946;1&lt;0.001.  Conclusion:  The generated diagrammatic severity scale was validated and reproducible, showing high reliability.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Síntomas]]></kwd>
<kwd lng="es"><![CDATA[daño]]></kwd>
<kwd lng="es"><![CDATA[evaluación]]></kwd>
<kwd lng="es"><![CDATA[reproducibilidad]]></kwd>
<kwd lng="en"><![CDATA[Symptoms]]></kwd>
<kwd lng="en"><![CDATA[damage]]></kwd>
<kwd lng="en"><![CDATA[evaluation]]></kwd>
<kwd lng="en"><![CDATA[reproducibility]]></kwd>
</kwd-group>
</article-meta>
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