Crescimento da cana-de-açúcar em superfícies irrigadas, com diferentes exposições e declividades
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Data
2013-02-22
Autores
Mazaron, Bruno Henrique Silveira [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Compreender os padrões espaciais das culturas, baseada em informações topográficas, pode fornecer oportunidades de aplicações específicas de manejo. Com isso o presente trabalho objetivou estudar a influência da exposição, declividade e da irrigação sobre o crescimento da cana-de-açúcar. A pesquisa foi desenvolvida na área experimental do Departamento de Engenharia Rural da FCAV/UNESP, denominada “Bacia Hidrográfica Experimental”, no período de Fevereiro/2011 a Maio/2012, utilizando superfícies caracterizadas como HI (horizontal irrigada), HNI (horizontal sem irrigação), N10 (norte com declividade 10%), N20 (norte com declividade 20%), N30 (norte com declividade 30%), N40 (norte com declividade 40%), N50 (norte com declividade 50%), S10 (sul com declividade 10%), S20 (sul com declividade 20%), S30 (sul com declividade 30%), S40 (sul com declividade 40%) e S50 (sul com declividade 50%). A variedade de cana-de-açúcar utilizada foi a RB855453. O crescimento da cultura no período foi observado através das seguintes variáveis: altura da planta, diâmetro do colmo, número de colmos, área foliar, massa de matéria seca e produtividade. As análises foram realizadas a 122, 183, 210, 267, 287, 336, 365, 394, 420 DAP (dias após o plantio), com três repetições. Para a análise química foram analisados ATR, POL, BRIX e fibra. Os resultados foram submetidos à análise de variância e correlação. O crescimento da cana-de-açúcar foi influenciado significativamente pela exposição, sendo favorecido na exposição Norte. As declividades foram menos efetivas em alterar o crescimento da variedade. A presença de irrigação mostrou-se eficiente em alterar o crescimento. Todos os aspectos químicos foram influenciados significativamente pelas declividades e exposições
Understanding the spatial patterns of cultures, based on topographic information, can provide opportunities for specific applications management. Therefore the present study investigated the influence of exposure, slope and irrigation on the sugarcane growth. The research was conducted at the Experimental Watershed of the Agricultural Engineering Department, School of Agriculture and Veterinary Sciences of São Paulo State University (FCAV/UNESP), from the February/2011 to May/2012 using surfaces characterized as HI (horizontal irrigated), HNI (horizontal without irrigated), N10 (north slope with 10%), N20 (north slope with 20%), N30 (north slope with 30%), N40 (north slope with 40%), N50 (north slope with 50%), S10 (south slope with 10%), S20 (south slope with 20%), S30 (south slope with 30%), S40 (south slope with 40%) and S50 (south slope with 50%). A variety of sugarcane was used RB855453. The crop growth period was observed through the following variables: plant height, stem diameter, number of stems, leaf area, and yield. Analyses were performed at 122, 183, 210, 267, 287, 336, 365, 394, 420 DAP (days after planting), with three replicates. For chemical analysis were analyzed ATR, POL, BRIX and fiber. The results were submitted to analysis of variance and correlation. The growth of sugarcane was significantly influenced by exposure, being favored in Northern Exposure. The declivities were less effective in altering the growth of variety. The presence of irrigation was effective in altering growth. All chemical aspects were significantly influenced by the declivities and exposures
Understanding the spatial patterns of cultures, based on topographic information, can provide opportunities for specific applications management. Therefore the present study investigated the influence of exposure, slope and irrigation on the sugarcane growth. The research was conducted at the Experimental Watershed of the Agricultural Engineering Department, School of Agriculture and Veterinary Sciences of São Paulo State University (FCAV/UNESP), from the February/2011 to May/2012 using surfaces characterized as HI (horizontal irrigated), HNI (horizontal without irrigated), N10 (north slope with 10%), N20 (north slope with 20%), N30 (north slope with 30%), N40 (north slope with 40%), N50 (north slope with 50%), S10 (south slope with 10%), S20 (south slope with 20%), S30 (south slope with 30%), S40 (south slope with 40%) and S50 (south slope with 50%). A variety of sugarcane was used RB855453. The crop growth period was observed through the following variables: plant height, stem diameter, number of stems, leaf area, and yield. Analyses were performed at 122, 183, 210, 267, 287, 336, 365, 394, 420 DAP (days after planting), with three replicates. For chemical analysis were analyzed ATR, POL, BRIX and fiber. The results were submitted to analysis of variance and correlation. The growth of sugarcane was significantly influenced by exposure, being favored in Northern Exposure. The declivities were less effective in altering the growth of variety. The presence of irrigation was effective in altering growth. All chemical aspects were significantly influenced by the declivities and exposures
Descrição
Palavras-chave
Cana-de-açúcar - Cultivo, Crescimento (Plantas), Radiação solar, Irrigação agricola, Produtividade agrícola, Sugarcane
Como citar
MAZARON, Bruno Henrique Silveira. Crescimento da cana-de-açúcar em superfícies irrigadas, com diferentes exposições e declividades. 2013. viii, 55 p. Dissertação (mestrado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, 2013.