Forms, Distribution, and Maximum Adsorption Capacities of Copper and Zinc in Vineyard Soils in Southern Brazil

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Titel: Forms, Distribution, and Maximum Adsorption Capacities of Copper and Zinc in Vineyard Soils in Southern Brazil

Beteiligte: Portela Morais, Gildean [VerfasserIn]; Comin, Jucinei José [VerfasserIn]; Rogério Lourenzi, Cledimar [VerfasserIn]; Luis Tiecher, Tadeu [VerfasserIn]; Roberto Fonsêca Sousa Soares, Cláudio [VerfasserIn]; Loss, Arcângelo [VerfasserIn]; Wellington de Melo, George Wellington de Melo [VerfasserIn]; Rozane, Danilo Eduardo [VerfasserIn]; Toselli, Moreno [VerfasserIn]; Wilbert Ferreira, Guilherme [VerfasserIn]; Severo de Souza Kulmann, Matheus [VerfasserIn]; Moreira Palermo, Natália [VerfasserIn]; Marchezan, Carina [VerfasserIn]; Brunetto, Gustavo [VerfasserIn]

Erschienen: [S.l.]: SSRN, [2022]

Umfang: 1 Online-Ressource (31 p)

Sprache: Englisch

DOI: 10.2139/ssrn.4023183

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Anmerkungen: In: CHEM98049

Beschreibung: Vineyards with a long history of cultivation in sandy and clayey soils, located in regions presenting subtropical climate, still lack studies associating Copper (Cu) and Zinc (Zn) fraction accumulation with distribution dynamics, as well as studies about the maximum adsorption capacities (MAC) of these metals. The present study aimed to assess Cu and Zn fraction accumulation and MAC in sandy and clayey soil in vineyards with different cultivation histories located in subtropical climate region. Vineyards with short (<20 years), intermediate (20-35 years), and long cultivation history (>35 years), besides the reference sites (native fields and forest) – adjacent to the vineyard. Soil collection in vineyards younger than 20 years and the ones in the age group 20-35 years were carried out in crop rows and between rows. Soil samples were subjected to chemical analysis to feature Cu and Zn chemical fractionation; MAC-Cu/Zn was estimated. The highest accumulation of all fractions and the highest MAC-Cu/ZN was observed in the most superficial layer (0.00-0.10 m) of the oldest vineyards, which were installed in clayey and sandy soils. Most Cu was distributed in the organic fraction (Cu OM ) in the most superficial layer (0.00-0.10 m) of clayey soils. However, most Cu was distributed in the mineral fraction (Cu Min ) in the deepest layer (0.10-0.20 m), whereas the highest Zn contents were observed in the residual fraction (Zn R ) of the two assessed layers. On the other hand, most Zn and Cu were distributed in the mineral fraction (Cu Min and Zn Min ) in the two layers of sandy soils. Clayey soils presented higher MAC-Cu/Zn than the sandy ones. Copper and Zinc MAC decreased as vineyards aged; the highest Cu and Zn values were observed between vineyard crop rows

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