Avaliação de genótipos de cana-de-açúcar para as condições edafoclimáticas de Aparecida do Taboado-MS
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Data
2008-07-04
Autores
Santos, Ana Carolina Araujo dos [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
O presente trabalho teve como objetivo avaliar as características agronômicas e os atributos tecnológicos de dezesseis genótipos de cana-de-açúcar em primeira soca nas condições ambientais de Aparecida do Taboado - MS. O experimento foi realizado na Fazenda Macuton 3071, em um único ambiente. Os genótipos foram avaliados por delineamento de blocos ao acaso, com três repetições. As avaliações agronômicas foram realizadas de Outubro de 2006 a Setembro de 2007, que consistiram em: número de perfilhos, diâmetro e massa de colmo, número de internódios e área foliar. As avaliações tecnológicas foram: total de sólidos solúveis (brix), (pol (%)) (sacarose no caldo), pureza do caldo, fibra da cana, açúcares redutores (Ar (%)) do caldo e açúcar total recuperável (ATR) do caldo aos 254, 314, 344 e 374 dias após o primeiro corte. A área foliar e massa seca de folhas verdes, associadas aos outros componentes de produção, contribuíram para o melhor desempenho dos genótipos. Os clones CTC941150 e CTC921894 apresentaram maior TCH, respectivamente, 159,38 t ha-1 e 106,41 t ha-1 (colheita no mês de julho), os clones não diferiram entre si para as características tecnológicas, exceto para a variável fibra (maior valor apresentado pelo clone CTC941209 com 15,06% e o menor valor pelos clones CTC943218 e CTC921852, respectivamente, 11,66 e 11,93%). Para as condições características de um ambiente de produção “D”, destacaram-se os clones CTC941150 e CTC921894.
This study aimed to evaluated the agronomics charactheristics e the technological attributes of the sixteen genotypes in the first ratoon crop when growth in the environmental conditions of the Aparecida do Taboado – MS. The experiment was conducted at the Farm Macuton 3071, on a Onisoil. The genotypes were evaluated on a randomized complete block design with three replications. The agronomic evaluations were carried out from October of 2006 to September of 2007 and consisting of: tillers number, diameter and weigth of stalk, nodes an leaf area. The technological avaliation were: total solubles solids (brix) in the juice, sucrose (pol (%)) in the juice, juice purity, cane fiber, reducing sugars (Ar (%)) in the juice and recoverable total sugar (ATR) in the juice at 254,314,344 and 374 days after the first cut. The leaf area and dry mass of green leaf, associated to others components of production, contributed to the best performance of the genotypes. The clones CTC941150 and CTC921894 presented TCH bigger, respectively, 159,38 t ha-1 and 106,41 t ha-1 (harvest in the July), the clones did not differ between you for the technological characteristics, except for the variable fiber (bigger value presented by the clone CTC941209 with 15,06 % and the least value for the clones CTC943218 and CTC921852, respectively, 11,66 and 11,93 %). For the characteristic conditions of an environment of production D, they stood out the clones CTC941150 and CTC921894.
This study aimed to evaluated the agronomics charactheristics e the technological attributes of the sixteen genotypes in the first ratoon crop when growth in the environmental conditions of the Aparecida do Taboado – MS. The experiment was conducted at the Farm Macuton 3071, on a Onisoil. The genotypes were evaluated on a randomized complete block design with three replications. The agronomic evaluations were carried out from October of 2006 to September of 2007 and consisting of: tillers number, diameter and weigth of stalk, nodes an leaf area. The technological avaliation were: total solubles solids (brix) in the juice, sucrose (pol (%)) in the juice, juice purity, cane fiber, reducing sugars (Ar (%)) in the juice and recoverable total sugar (ATR) in the juice at 254,314,344 and 374 days after the first cut. The leaf area and dry mass of green leaf, associated to others components of production, contributed to the best performance of the genotypes. The clones CTC941150 and CTC921894 presented TCH bigger, respectively, 159,38 t ha-1 and 106,41 t ha-1 (harvest in the July), the clones did not differ between you for the technological characteristics, except for the variable fiber (bigger value presented by the clone CTC941209 with 15,06 % and the least value for the clones CTC943218 and CTC921852, respectively, 11,66 and 11,93 %). For the characteristic conditions of an environment of production D, they stood out the clones CTC941150 and CTC921894.
Descrição
Palavras-chave
Cana-de-açucar - Variedades, Produtividade agrícola, Climatologia agricola, Saccharum spp, Cycle, Performance, Maturation, Productivity
Como citar
SANTOS, Ana Carolina Araujo dos. Avaliação de genótipos de cana-de-açúcar para as condições edafoclimáticas de Aparecida do Taboado-MS. 2008. 90 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Engenharia de Ilha Solteira, 2008.