TY - JOUR AU - Rodrigues do Carmo Brito, Thyago AU - Ferreira Barbosa, Thiago AU - Antônio Barbosa, João AU - Ferreira de Oliveira, Cleuton AU - Ferreira de Oliveira, Wilson PY - 2013/09/28 Y2 - 2024/03/28 TI - Desempenho de sete genótipos de cana de açúcar de quinto corte na região sul do estado do Tocantins JF - Revista Verde de Agroecologia e Desenvolvimento Sustentável JA - Green Journal VL - 8 IS - 3 SE - ARTICLES DO - UR - https://www.gvaa.com.br/revista/index.php/RVADS/article/view/1954 SP - 78 - 83 AB - <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:RelyOnVML /> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--><strong></strong><span style="font-size: 9.0pt; line-height: 97%; font-family: 'Times New Roman','serif';">Este trabalho foi realizado objetivando avaliar o desempenho agronômico de sete genótipos de cana de açúcar de quinto corte em relação à altura da planta, número de colmos, biomassa e o teor médio de sólidos solúveis (°Brix). O experimento foi conduzido na estação experimental da UFT, com inicio logo após o primeiro corte de cana em julho de 2011. O delineamento experimental foi em blocos casualizados com 7 tratamentos e 4 repetições, sendo as variáveis submetidas à análise de variância pelo teste (Tukey) a 5% de probabilidade para característica de produtividade. As características altura de planta, número de colmos, biomassa e (°Brix) utilizou-se análise de regressão. As cultivares avaliada<span style="color: black; mso-themecolor: text1;">s foram: RB72-454, RB83-5486, RB85-5113, RB85-5536, RB86-7515, IAC86-2480</span>, SP79-1011. Para altura e número de colmos a cultivar RB 85-5113 obteve maiores valores. Quanto à produtividade, o cultivar RB 85-5536 foi melhor, diferindo estatisticamente das cultivares RB83-5486 e IAC86-2480. Já a variável (°Brix), a melhor foi a RB83-5486. Nas condições edafoclimáticas da região sul do Estado do Tocantins, a exploração canavieira mostra-se de grande potencial, porém, o presente trabalho indica a importância da substituição dos cultivares após o quinto corte devido à perda de vigor.</span> <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:DoNotShowInsertionsAndDeletions /> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>PT-BR</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark 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