<?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>0120-2812</journal-id>
<journal-title><![CDATA[Acta Agronómica]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Agron.]]></abbrev-journal-title>
<issn>0120-2812</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-28122020000200136</article-id>
<article-id pub-id-type="doi">10.15446/acag.v69n2.60246</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Water requirements and restrictions to sugarcane in cane plants and ratoon cane cycles in Southern Brazil]]></article-title>
<article-title xml:lang="es"><![CDATA[Requerimientos y restricciones de agua en caña de azúcar plantilla y soca en el sur de Brasil]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gurski]]></surname>
<given-names><![CDATA[Bruno César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moretti de Souza]]></surname>
<given-names><![CDATA[Jorge Luiz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gerstemberger]]></surname>
<given-names><![CDATA[Emerson]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Oliveira]]></surname>
<given-names><![CDATA[Ricardo Augusto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Federal University of Paraná Department of Soil and Agronomic Engineering ]]></institution>
<addr-line><![CDATA[Curitiba Paraná]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>69</volume>
<numero>2</numero>
<fpage>136</fpage>
<lpage>144</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-28122020000200136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-28122020000200136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-28122020000200136&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In a site with a Cfa-type climate in southern Brazil, the water requirements and restrictions for the cultivation of sugar cane   (Saccharum spp.), in plant and soca (second cut) were characterized. Water availability was calculated based on the daily water balance and evapotranspiration was estimated using the Penman-Monteith method. The thermal and water requirements of sugarcane were calculated taking as reference the agroecological zoning in the state of Paraná, Brazil. Water requirement index did not show limiting factors for the development of the crop both in plant and soca. Water deficit was the most important agroclimatic risk factor. In Paranavaí-PR, Brazil, sugarcane is a safe crop, with possibilities of saving water in the development stage (phase II), with frequent additional irrigation needs of 508.8 mm/crop cycle for plant and 486.5 mm/sugarcane cycle for soca.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En un sitio con clima tipo Cfa del sur de Brasil, se caracterizaron los requerimientos y restricciones de agua para el cultivo de caña de azúcar   (Saccharum spp.) en plantilla y soca (segundo corte). La disponibilidad de agua fue calculada con base en el balance hídrico diario y la evapotranspiración se estimó mediante el método de Penman- Monteith. Los requerimientos térmicos e hídricos de la caña fueron calculados tomando como referencia la zonificación agroecológica en el estado de Paraná, Brasil. El índice de requerimiento de agua no mostró factores restrictivos para el desarrollo del cultivo tanto en plantilla como en soca. El déficit de agua fue el factor de riesgo agroclimático más importante. En Paranavaí-PR, Brasil, la caña de azúcar es un cultivo seguro, con posibilidades de ahorro de agua en la etapa de desarrollo (fase II), con necesidades de riego adicional frecuente de 508.8 mm por ciclo de cultivo en plantilla y 486.5 mm por ciclo de caña soca.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Climate]]></kwd>
<kwd lng="en"><![CDATA[Sacharum spp.]]></kwd>
<kwd lng="en"><![CDATA[Southern Brazil]]></kwd>
<kwd lng="en"><![CDATA[Water balance, Water deficit, WRSI]]></kwd>
<kwd lng="es"><![CDATA[Balance hídrico]]></kwd>
<kwd lng="es"><![CDATA[Déficit de agua]]></kwd>
<kwd lng="es"><![CDATA[Requerimiento hídricos]]></kwd>
<kwd lng="es"><![CDATA[Saccharum sp., Sur de Brasil]]></kwd>
</kwd-group>
</article-meta>
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