<?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>2730-5066</journal-id>
<journal-title><![CDATA[Agrociencia Uruguay]]></journal-title>
<abbrev-journal-title><![CDATA[Agrocienc. Urug.]]></abbrev-journal-title>
<issn>2730-5066</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Agronomía - Instituto de Nacional de Investigación Agropecuaria]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2730-50662021000201306</article-id>
<article-id pub-id-type="doi">10.31285/agro.25.401</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Tools to modify cherries harvest time in Alto Valle de Río Negro and Neuquén, Argentina]]></article-title>
<article-title xml:lang="pt"><![CDATA[Ferramentas para regular o tempo de colheita em cerejas no Alto Valle de Río Negro e Neuquén, Argentina]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Raffo]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Curetti]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Tecnología Agropecuaria (INTA) Fruticultura ]]></institution>
<addr-line><![CDATA[Rio Negro ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<volume>25</volume>
<numero>nspe1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_arttext&amp;pid=S2730-50662021000201306&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_abstract&amp;pid=S2730-50662021000201306&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_pdf&amp;pid=S2730-50662021000201306&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Cherry production is characterized by a very short fruit development period that covers an average of 80 days from flowering to harvest. Although there are varieties with different cycles, the harvest in Alto Valle de Río Negro and Neuquén, Argentina, is highly concentrated. The possibility of extending the harvest period allows to improve logistics, decongest packing work and regulate to a certain extent the supply of cherries on the market. Fruit cherries are highly perishable non-climacteric fruits and have low supply in counter season, which determines an unsaturated foreign market and the possibility to obtain good prices. The highest prices on the market depend on the fruit size and fruit quality and the harvest time (early and late). The aim of this work was to evaluate the feasibility of using different growth regulators and bio-stimulants to extend the sweet cherries harvest period. The use of hydrogen cyanamide (hc) in early varieties to advance the harvest and the use of Retard Cherry® (rch) in late varieties to delay flowering and harvesting were evaluated. In addition, the effect of gibberellins (Gb) on the delay of maturity and improvement in quality in different varieties was evaluated. The use of hc allowed to advance bloom by 10 days and the harvest by 7 days in fruits of New Star, while rch delayed the bloom (10 days) and maturity (5 days) of Santina, Lapins and Regina cherries. The application of Gb at 20 ppm from straw yellow stage until the start of the pink improves the quality of the fruits, but the effect on delaying maturity decreases with later applications. The use of regulators in cherries allows to extend the harvest window in nearly 10 days, depending on each cultivar and the meteorological conditions of the season.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La producción de cerezas se caracteriza por un ciclo productivo corto que abarca un promedio de 80 días desde floración a cosecha. Si bien existen variedades de diferentes ciclos, la cosecha en el Alto Valle de Río Negro y Neuquén, Argentina, es muy concentrada. El escalonamiento de la cosecha ayuda a mejorar la logística, descongestionar el trabajo en los empaques y regular en cierta medida la oferta de cerezas en el mercado. La cereza es un fruto de corta conservación y baja oferta en contraestación, lo que determina un mercado externo no saturado y la obtención de buenos precios. Los mayores precios en el mercado dependen del calibre y la calidad de las cerezas y del momento de la temporada de cosecha (primicia y tardicia). El objetivo de este trabajo fue evaluar la factibilidad de uso de regladores de crecimiento como estrategia para extender el período de cosecha de cerezas. Se evaluó el uso de cianamida hidrogenada (hc) en cultivares tempranos para adelantar la cosecha y el uso de Retard Cherry® (rch) en cultivares tardíos para retrasar la floración y la cosecha. Además, se evaluó el efecto de las giberelinas (Gb) en el retraso de madurez y mejora en la calidad en diferentes cultivares. El uso de hc logró adelantar 10 días la floración y 7 días la cosecha en New Star, mientras que el rch retrasó la floración (10 días) y la madurez (5 días) de cerezas Santina, Lapins y Regina. La aplicación de Gb a 20 ppm desde color pajizo hasta inicio pinta mejora la calidad de los frutos, pero el efecto en el retraso de la madurez disminuye con aplicaciones más tardías. El uso de reguladores en cerezas permite ampliar la ventana de cosecha en alrededor de 10 días dependiendo de cada cultivar y las condiciones de la temporada.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo: A produção de cerejas é caracterizada por um curto ciclo de produção, que abrange, em média, 80 dias desde a floração até a colheita. Embora existam variedades de ciclos diferentes, a colheita no Alto Valle de Río Negro e Neuquén, Argentina é altamente concentrada. O escalonamento da colheita ajuda a melhorar a logística, descongestionar o trabalho de embalagem e, até certo ponto, regular o fornecimento de cerejas no mercado. A cereja é um fruto de curta conservação e baixa oferta na contra-estação, o que determina um mercado externo insaturado e a obtenção de bons preços. Os preços mais altos do mercado dependem do calibre e qualidade das cerejas e da época da colheita (precoce ou tardia). O objetivo desse trabalho foi evaluar a possibilidade de uso de reguladores de crescimento como estratégia para estender o período de colheita de cerejas. Foram avaliados o uso de cianamida hidrogenada (HC) em cultivares precoces para adiantar a colheita e o uso de Retard Cherry® (RCH) em cultivares tardias para retardar o florescimento e a colheita. Além disso, foi avaliado o efeito das giberelinas (Gb) no retardamento da maturação e na melhoria da qualidade em diferentes cultivares. O uso de HC conseguiu adiantar a floração em 10 dias e a colheita em 7 dias, em 'New Star', enquanto o RCH atrasou a floração (10 dias) e a maturação (5 dias) das cerejas 'Santina', 'Lapins' e 'Regina'. A aplicação de Gb a 20 ppm quando as frutas estão na cor da palha ao início da rosa, melhora a qualidade dos frutos, mas o efeito no atraso da maturidade diminui com aplicações mais tardias. O uso de reguladores em cerejas permite estender a janela da colheita em cerca de 10 dias, dependendo da cultivar e das condições da estação.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[hydrogen cyanamide]]></kwd>
<kwd lng="en"><![CDATA[gibberellins]]></kwd>
<kwd lng="en"><![CDATA[bio stimulants]]></kwd>
<kwd lng="en"><![CDATA[New Star]]></kwd>
<kwd lng="en"><![CDATA[Sweetheart]]></kwd>
<kwd lng="en"><![CDATA[Regina]]></kwd>
<kwd lng="es"><![CDATA[cianamida hidrogenada]]></kwd>
<kwd lng="es"><![CDATA[giberelinas]]></kwd>
<kwd lng="es"><![CDATA[bioestimulantes]]></kwd>
<kwd lng="es"><![CDATA[New Star]]></kwd>
<kwd lng="es"><![CDATA[Sweetheart]]></kwd>
<kwd lng="es"><![CDATA[Regina]]></kwd>
<kwd lng="pt"><![CDATA[cianamida hidrogenada]]></kwd>
<kwd lng="pt"><![CDATA[giberelinas]]></kwd>
<kwd lng="pt"><![CDATA[bioestimulantes]]></kwd>
<kwd lng="pt"><![CDATA[New Star]]></kwd>
<kwd lng="pt"><![CDATA[Sweetheart]]></kwd>
<kwd lng="pt"><![CDATA[Regina]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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