Distribuição e correlação espacial da incidência da fusariose em pimenta-do reino com atributos do solo
Nenhuma Miniatura disponível
Data
2012-05-30
Autores
Drumond Neto, Antonio Pereira
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal do Espírito Santo
Resumo
The black pepper is one of the most important spices and consumed worldwide. The
fusarium wilt is the major disease that attacks the pipericultura in Brazil and is caused
by the fungus Fusarium solani f. sp. piperis (Nectria haematococca f. sp. piperis).
Plant growth and root diseases are directly influenced by physical, chemical and
biological soil environment, which are interconnected and form complex associations
between them. The plant nutrition and a fertile soil with good physical characteristics
influence all parts of the triangle of root diseases. New tools to investigate the
variability and complexity of the interaction between the soil environment and
pathogen are poorly studied, so the aim of this study was to research and implement
methods of geostatistics to understand the distribution and spatial correlation of the
intensity of Fusarium in black pepper crop with soil attributes. The experiment was
conducted in the period from 2010 to 2011 in the North of Espírito Santo, Brazil.
Geostatistics was used to study the spatial dependence and implanted a regular
sampling grid of 12,000 m2. For the intensity of the disease was performed seven
assessments, totaling 303 days, making the last evaluation soil samples for
determinations chemistry, physics and texture. For the spatial correlation between
disease severity with soil attributes, we used the analysis of variograms. The maps of
the distribution of the disease over time show an initial focus on the edges of the
crop, alongside a crop of older black pepper kingdom. The disease correlates
spatially with the attributes fine sand ratio Mg / K, magnesium, pH, exchangeable
acidity and base saturation.
Descrição
Palavras-chave
Pathogen soil , Epidemiology , Space and time , Precision agriculture , Geographic information systems
Citação
DRUMOND NETO, Antonio Pereira. Distribuição e correlação espacial da incidência da fusariose em pimenta-do reino com atributos do solo. 2012. 70 f. Dissertação (Mestrado em Agricultura Tropical) - Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal do Espírito Santo, São Mateus, 2012.