<?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>S0377-94242024000200095</article-id>
<article-id pub-id-type="doi">10.15517/rac.v48i2.62487</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Calidad poscosecha del ñame (Dioscorea alata L.) En Costa Rica: factores que afectan durante el curado y almacenamiento del tubérculo]]></article-title>
<article-title xml:lang="en"><![CDATA[Postharvest quality of yam (Dioscorea alata L.) in Costa Rica: Factors that affect during curing and tuber storage]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Sánchez]]></surname>
<given-names><![CDATA[Maricruz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castro-Chinchilla]]></surname>
<given-names><![CDATA[Johanny]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sáenz-Murillo]]></surname>
<given-names><![CDATA[Marco Vinicio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Umaña-Rojas]]></surname>
<given-names><![CDATA[Gerardina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica Facultad de Ciencias Agroalimentarias Centro de Investigaciones Agronómicas]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Penn State University Plant Pathology Laboratory Fruit Research and Extension Center]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Costa Rica Facultad de Ciencias Agroalimentarias Centro de Investigaciones Agronómicas]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Costa Rica Facultad de Ciencias Agroalimentarias Centro de Investigaciones Agronómicas]]></institution>
<addr-line><![CDATA[ ]]></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>48</volume>
<numero>2</numero>
<fpage>95</fpage>
<lpage>110</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0377-94242024000200095&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0377-94242024000200095&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0377-94242024000200095&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Introducción. El ñame es un cultivo importante en varias regiones de Costa Rica. A pesar de ello, las pérdidas poscosecha son altas y no están cuantificadas. Objetivo. El estudio se realizó para determinar las causas del deterioro de calidad y pérdidas poscosecha en zonas productoras de ñame ubicadas en los cantones localizados en las provincias de Alajuela, Heredia y Limón. Materiales y métodos. Se determinó la calidad de los tubérculos en dos momentos del proceso poscosecha: 1) durante la etapa de curado (15 a 30 días a 25-30°C y 85% HR) y 2) al finalizar la simulación de envío a mercado (16°C y 85% HR durante 28 días). En ambas etapas se midieron las siguientes variables de calidad: peso; longitud; número de golpes por tubérculo y número de estrías abiertas o cerradas por tubérculo; incidencia de moho superficial y de corte, pudrición externa e incidencia de pudrición por nematodos. Resultados. Al finalizar el curado, la presencia de estrías abiertas fue importante en algunas zonas (30% incidencia en San Carlos), la presencia de mohos superficiales y en corte de cosecha (hasta 21% incidencia de ambos factores en Upala), los daños por nematodos (35 % incidencia en Pococí), aunado a variaciones de tamaño (largo, ancho y peso) fueron factores importantes de pérdidas. Concluida la simulación de transporte, la presencia de daños por nematodos (hasta 35% incidencia), presencia de moho superficial (15% incidencia) y en el corte de cosecha (hasta 49% incidencia), y pudriciones externas (hasta 5% incidencia) fueron causas relevantes de pérdidas. Conclusión. Los resultados apuntan hacia la necesidad de hacer en las zonas de estudio, una revisión integral de las prácticas de cultivo y poscosecha con el fin de reducir los factores causantes de los defectos de calidad identificados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[abstract Introduction. The yam is an important crop in several regions of Costa Rica. However, postharvest losses are high and not quantified. Objective. This study was conducted to determine the causes of quality deterioration and postharvest losses in yam-producing areas located in the provinces of Alajuela, Heredia, and Limón. Materials and methods. The quality of the tubers was determined at two postharvest stages: 1) during the curing stage (15 to 30 days at 25-30°C and 85% RH) and 2) at the end of the market shipping simulation (16°C and 85% RH for 28 days). The following quality variables were measured in both stages: weight, length, number of impacts per tuber, number of open or closed striae per tuber, incidence of surface and cut mold, external rot, and incidence of nematode rot. Results. At the end of curing, the presence of open striae was significant in some areas (30% incidence in San Carlos), the presence of surface and cutting mold at harvest (up to 21% incidence of both factors in Upala), nematode damage (35% incidence in Pococí), along with size variations (length, width, and weight) were important factors contributing to losses. At the end of the transportation simulation, the presence of nematode damage (up to 35% incidence), surface mold (15% incidence), cutting mold (up to 49% incidence), and external rot (up to 5% incidence) were significant causes of losses. Conclusion. The results suggest that in the region of the study, a comprehensive review of cultivation and postharvest practices is necessary in order to reduce the factors causing the identified quality defects.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[tubérculos]]></kwd>
<kwd lng="es"><![CDATA[poscosecha]]></kwd>
<kwd lng="es"><![CDATA[estría]]></kwd>
<kwd lng="es"><![CDATA[moho]]></kwd>
<kwd lng="es"><![CDATA[pudrición]]></kwd>
<kwd lng="es"><![CDATA[nematodo]]></kwd>
<kwd lng="en"><![CDATA[tubers]]></kwd>
<kwd lng="en"><![CDATA[postharvest]]></kwd>
<kwd lng="en"><![CDATA[striae]]></kwd>
<kwd lng="en"><![CDATA[mold]]></kwd>
<kwd lng="en"><![CDATA[rot]]></kwd>
<kwd lng="en"><![CDATA[nematode]]></kwd>
</kwd-group>
</article-meta>
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