<?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>2071-0054</journal-id>
<journal-title><![CDATA[Revista Ciencias Técnicas Agropecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cie Téc Agr]]></abbrev-journal-title>
<issn>2071-0054</issn>
<publisher>
<publisher-name><![CDATA[Universidad Agraria de La Habana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2071-00542023000300002</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Relationship between Biophysical Variables and Spectral Vegetative Indices in Cultivation of Potato (Solanum tuberosum)]]></article-title>
<article-title xml:lang="es"><![CDATA[Relación entre variables biofísicas e índices vegetativos espectrales en el cultivo de la papa (Solanum tuberosum)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Bravo]]></surname>
<given-names><![CDATA[Elvis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Placeres Remior]]></surname>
<given-names><![CDATA[Arley]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Rivero]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Cueto]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera Suárez]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de las Villas Facultad de Ciencias Agrícolas Departamento de Ingeniería Agrícola]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Católica de Temuco Facultad Técnica ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Técnica de Manabí Facultad de Ingeniería Mecánica ]]></institution>
<addr-line><![CDATA[Portoviejo Manabí]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2023</year>
</pub-date>
<volume>32</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2071-00542023000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2071-00542023000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2071-00542023000300002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The objective of the present work is to identify the relationship between the spectral vegetative indices (VI) and biophysical variables in potato crop. The study was carried out in Valle del Yabú Agricultural Enterprise in Villa Clara Province, located at coordinates 22. 54491º North Latitude and 79. 99791º West Longitude, in an area of 10 ha irrigated by central pivot system. The monitoring of the morphological indicators of growth was carried out through field measurements, for which 15 experimental points georeferenced with GPS were taken. To monitor the VIs, the land cover images and spatial distribution maps available in the Earth Observed System were used. The study showed that indexes as NDVI, EVI and SAVI vary in correspondence with the development of the biophysical properties, showing correlations greater than 0,9. The strong correlation of 0,98 was obtained between NDVI index and leaf area (AF). On the other hand, by monitoring NDVI it was possible to identify the changes that occurred in AF and soil moisture during vegetative period. The spatial distribution of NDVI values also made it possible to identify the variability in the plant cover of the crop.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El presente trabajo tiene como objetivo identificar la relación entre los índices vegetativos espectrales (IV) y las variables biofísicas en el cultivo de la papa. El mismo se realizó en la empresa agropecuaria Valle del Yabú de la provincia Villa Clara, ubicada en las coordenadas 22,54491º Latitud Norte y 79,99791º Longitud Oeste, en un área de 10 ha con riego por pivote central. El seguimiento a los indicadores morfológicos de crecimiento se realizó a través de mediciones de campo para lo cual se tomaron 15 puntos experimentales georreferenciados con GPS. Para el monitoreo de los IV se emplearon las imágenes de cobertura terrestre y mapas de distribución espacial disponibles en el sistema Earth Observed System. El estudio mostró que los IV: NDVI, EVI y SAVI varían en correspondencia con el desarrollo de las variables biofísicas, mostrando correlaciones mayores a 0,9. La mayor correlación se obtuvo entre el índice NDVI y el área foliar (AF) y fue de 0,98. Por su parte, mediante el monitoreo del NDVI se logró identificar los cambios ocurridos en el AF y la humedad del suelo durante el período vegetativo. La distribución espacial de los valores NDVI posibilitaron identificar la variabilidad en la cobertura vegetal del cultivo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Coverage]]></kwd>
<kwd lng="en"><![CDATA[Satellite]]></kwd>
<kwd lng="en"><![CDATA[Agriculture]]></kwd>
<kwd lng="en"><![CDATA[Maps]]></kwd>
<kwd lng="en"><![CDATA[Yield]]></kwd>
<kwd lng="es"><![CDATA[cobertura]]></kwd>
<kwd lng="es"><![CDATA[satelital]]></kwd>
<kwd lng="es"><![CDATA[agricultura]]></kwd>
<kwd lng="es"><![CDATA[mapas]]></kwd>
<kwd lng="es"><![CDATA[rendimiento]]></kwd>
<kwd lng="es"><![CDATA[índice de vegetación]]></kwd>
<kwd lng="es"><![CDATA[variables biofísicas]]></kwd>
</kwd-group>
</article-meta>
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