Chemical characterization of the soils from black pepper (Piper nigrum L.) cultivation using principal component analysis (PCA) and Kohonen self-organizing map (KSOM)

Autor: Jefferson Rodrigues de Souza, Ana Christina Wigneron Gimenes, Nathalia Luiza Passamani Wyatt, Geisamanda Pedrini Brandão, Maria Tereza Weitzel Dias Carneiro, Rafael Mantovaneli, Floriatan Santos Costa, Pablo de Azevedo Rocha, Merisnet Ferde, Vinicius Câmara Costa, Erik Galvão Paranhos da Silva
Rok vydání: 2021
Předmět:
Zdroj: Journal of Soils and Sediments. 21:3098-3106
ISSN: 1614-7480
1439-0108
DOI: 10.1007/s11368-021-02966-3
Popis: Chemical characterization of soils is fundamental for assessing their quality and proposing agricultural practices to ensure high productivity and quality of the crops. In this sense, we evaluate the chemical profile of soils from the black pepper cultivation of the Espirito Santo State, Brazil. Also, the chemometrics tools principal component analysis (PCA) and Kohonen self-organizing map (KSOM) were used for data interpretation. In this study, soil samples from ten properties (P1 to P10) of black pepper cultivation were analyzed. Five samples were collected from each property in depths of 0–20 cm, resulting in a total of 50 samples. A total of 17 chemical parameters were evaluated to characterize the samples according to the chemical similarities. A comparison was made between the chemometric tools (PCA and KSOM) used in the interpretation of the data. Both tools showed satisfactory and very similar results. In addition, the results of the chemical characterization soils are fundamental and can help the professionals in the agricultural practices to ensure high productivity and quality black pepper crops. Although KSOM and PCA show similar results, KSOM was more advantageous since it can interpret non-linear variables. Already, PCA requires the use of several principal components for the interpretation of the data.
Databáze: OpenAIRE
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