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Ana Rita F. Coelho; Ana Coelho Marques; Cláudia Campos Pessoa; Diana Daccak; Inês Carmo Luís; Maria Manuela Silva; Manuela Simões; Fernando H. Reboredo; Maria F. Pessoa; Paulo Legoinha; José C. Ramalho; Paula Scotti Campos; Isabel P. Pais; José N. Semedo; Fernando C. Lidon
Chemistry Proceedings, 02/2022, Volume: 10, Issue: 1Conference Proceeding, Journal Article
Appropriate soil conditions are important for the success of culturing tomatoes. In fact, there are mineral elements that are essential for the good and healthy development of tomatoes, namely, nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, and zinc. Additionally, organic matter and pH play important parts in the process. In this context, this study aimed to characterize a soil destined to produce an industrial tomato variety in South Portugal. As such, mineral elements content, pH, electrical conductivity, humidity, organic matter, and color (without humidity and without humidity and organic matter) were analyzed in 16 soil samples before any type of soil preparation was carried out. Through principal components analysis (PCA), it was possible to observe that electrical conductivity and humidity are more correlated with each other than pH and organic matter. However, the pH of soil varied between 6.9 (minimum) and 7.3 (maximum): in accordance with the ideal range values for tomato production. Additionally, regarding quantification of mineral elements, Fe showed a higher content, followed by K, Ca, P, Mg, S, Zn, and As. However, regarding the color of the soil without humidity and without humidity and organic matter, there were significant differences between CieLab parameters (L, Chroma, and Hue). Nevertheless, soil conditions of the field presented good requirements for tomato production, despite the higher levels of Fe in the soil and the presence of As.
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