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MULTIVARIATE ANALYSIS OF SUGAR CANE CULTIVARS YIELD UNDER TWO SOIL PREPARATIONS SYSTEMS

Domain:

agriculture

Record type:

paper
Creator:
SálCriEgaMan
Publisher:
EIA
Host:
MULTIVARIATE ANALYSIS OF SUGAR CANE CULTIVARS YIELD UNDER TWO SOIL PREPARATIONS SYSTEMS   SÁLVIO NAPOLEÃO SOARES ARCOVERDE1; CRISTIANO MARCIO ALVES DE SOUZA2; EGAS JOSE ARMANDO3; MANOEL CARLOS GONÇALVES4; WESLLEY RODRIGUES SANTOS5   1,2,4,5Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados, Rodovia Dourados/Itahum, km 12, 79.804-970, Dourados, MS, Brazil, salvionapoleao@gmail.com; csouza@ufgd.edu.br; manoelgoncalves@ufgd.edu.br; weslleyrs1@hotmail.com 3 Escola Superior de Desenvolvimento Rural, Universidade Eduardo Mondlane, Bairro 7 de setembro, recinto da Escola Secundária de Mucoque, Vilankulo, Inhambane,  Mozambique, earmando24@gmail.com   ABSTRACT: The knowledge of sugarcane cultivars performance under different soil preparation systems and climatic conditions plays a great role for the correct varietal management in the farming units. Thus, this study aims to characterize the performance of eight sugarcane cultivars, in a Dystroferric Red Latosol under non-tillage and reduced tillage, based on multivariate statistical analysis. To achieve this goal, a trial was conducted at FAECA-UFGD, splitting the area into two sub-areas, which composed the non-tillage and reduced tillage sub-areas. Then, eight sugarcane cultivars were planted in each sub-area basing on a completely randomized design with four replications. To evaluated the trial the data of the stalks length, stalks diameter, number of tillers per meter, yield, soluble solids level content, total recoverable sugars and sucrose content, was collected and submitted to descriptive statistics and then to correlation statistics and the normality test, to verify the analyses of hierarchical and factorial cluster assumptions. The statistical technique of factorial analysis applied into the sugarcane production components, identified three retained factors related to sucrose production, yield and stalks growth, respectively. The statistical technique of hierarchical grouping allows the formation of groups of cultivars according to soil preparation systems, evidencing superior performance in non-tillage, with a major target to the early cultivars (RB965902, RB966928, RB855156) and medium-cycle cultivar (RB985476).   Keywords: Saccharum spp, cane-plant, management systems, non-tillage.   ANÁLISE MULTIVARIADA DA PRODUÇÃO DE CULTIVARES DE CANA-DE-AÇÚCAR SOB DOIS SISTEMAS DE PREPAROS DO SOLO   RESUMO: O conhecimento do desempenho de diferentes cultivares de cana-de-açúcar nas distintas condições edafoclimáticas e de manejo do solo serve de subsídio para o correto manejo varietal nas unidades de produção. Objetivou-se caracterizar o desempenho de oito cultivares de cana-de-açúcar, em cana-planta, cultivadas em um Latossolo Vermelho Distroférrico sob plantio direto e preparo reduzido, baseando-se em técnicas estatísticas de análise multivariada. O trabalho foi conduzido na FAECA-UFGD onde a área exerimental foi dividida em duas subáreas, compostas pelo plantio direto e preparo reduzido. Em cada preparo foram cultivadas oito cultivares de cana-de-açúcar em um delineamento inteiramente casualizado, com quatro repetições. Foram avaliados comprimento de colmos, diâmetro de colmos, número de perfilhos por metro, produtividade de colmos, teor de sólidos solúveis, açúcares totais recuperáveis e teor de sacarose, cujos dados coletados foram submetidos a descritiva e de correlação, e o teste de normalidade, que serviram como pressupostos para as análises de agrupamento hierárquico e fatorial. A técnica estatística de análise fatorial aplicada para os componentes de produção de cana-de-açúcar identificou três fatores retidos referentes à produção de sacarose, produtividade e crescimento de colmos, respectivamente. A técnica estatística de agrupamento hierárquica permitiu a formação de grupos de cultivares em função do preparo do solo, evidenciando desempenho superior em plantio direto, com maior desempenho para as cultivares precoce (RB965902, RB966928, RB855156) e cultivar de ciclo médio (RB985476).   Palavras-chaves: Saccharum spp., cana-planta, sistemas de manejo, plantio direto.

Visit

doi.org

Languages

Tonga

Licenses

http://creativecommons.org/licenses/by-nc-nd/4.0

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