Characterization of Recently Planted Coffee Cultivars from Vegetation Indices Obtained by a Remotely Piloted Aircraft System

Sustainability

Leonardo Conti¹  Enrico Palchetti¹  Luana Mendes dos Santos²  Gabriel Araújo e Silva Ferraz²  Daniel Veiga Soares²  Patrícia Ferreira Ponciano Ferraz²  Rafael Alexandre Pena Barata²  Nicole Lopes Bento²  Lucas Santos Santana² 

[1] Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Florence, Via San Bonaventura, 13, 50145 Florence, Italy;Department of Engineering, Federal University of Lavras—UFLA, Aquenta Sol, 3037, Lavras 37200-900, MG, Brazil;

关键词: Coffea arabica L.;    precision farming;    remote sensing;    spectral signature;   

DOI  :  10.3390/su14031446

来源: DOAJ

【 摘 要 】

Brazil is the main producer and exporter and the second-largest consumer of coffee in the world, and Remotely Piloted Aircraft Systems stands out as an efficient remote detection technique applied to the study and mapping of crops. The objective of this study was to characterize three recently planted cultivars of Coffea arabica L. The study area is in Minas Gerais, Brazil, with a coffee plantation of the initial age of 5 months. The temporal behavior was determined based on monthly mean values. The spectral profile was obtained with mean values of the last month of dry and rainy periods. The statistical differences were obtained based on the non-parametric test of multiple comparisons. The estimation of the exponential equation was obtained through the Spearman correlation coefficient of determination and root mean square error. It was concluded that the seasons influence the behavior and development of cultivars, and significant statistical differences were detected for the variables, except for the chlorophyll variable. Due to the proximity and overlap of the reflectance values, spectral bands were not used to individualize cultivars. A correlation between the vegetation indices and leaf area index was observed and the exponential regression equation was estimated for each cultivar under study.

【 授权许可】

Unknown