Dissertação
Delineamento de zonas potenciais para manejo diferenciado em nível de talhão apartir de dados de colheita e de imagens de satélite
Fecha
2016-04-26Registro en:
VEIVERBERG, Kelly Taline. DESIGN AREAS FOR POTENTIAL MANAGEMENT IN DIFFERENTIAL FIELD
LEVEL HARVEST DATA FROM AND SATELLITE IMAGES. 2016. 55 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2016.
Autor
Veiverberg, Kelly Taline
Institución
Resumen
Precision agriculture has been used to assist farmers to choose the best management
strategies, by identifying variability present in the area and from that, to determine the
limiting factors and propose different management alternatives, according to the needs of each
zone. It is important to create instruments that respond to one of the main issues, common to
all of those who have ambition to the adoption and implementation of production
modernization techniques: the technical and economic viability of modern production
agriculture. The aim of this study was to relate stability maps for yield productivity and
stability maps by Normalized Difference Vegetation Index (NDVI) for determination of
management zones. The study was based on an analysis of five years of crop yield data and
five satellite images Landsat 5 and Landsat 8 for Vegetation Index (NDVI) data for 2007
(wheat), 2008 (soybean), 2009 (soybean), 2013 (wheat) and 2014 (soybean). With processed
data, stability maps for yield productivity and stability maps by Normalized Difference
Vegetation Index (NDVI) were generated, following data parameters and coefficient of
variation. Both maps were compared and validated by the Kappa index. As a result, we
obtained a weak Kappa index relationship (0.2623), but 57.48% of the area could be classified
correctly, when comparing the correlation maps. We concluded that crossing data of areas
classified by productivity yield and NDVI is valid and that the zoning method for NDVI
method is a way to determines areas, but with greater emphasis in areas classified as "Stable
High."