Cledimar Rogério Lourenzi
Universidade Federal de Santa Catarina
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Featured researches published by Cledimar Rogério Lourenzi.
Ecotoxicology and Environmental Safety | 2016
Tadeu Luis Tiecher; Carlos Alberto Ceretta; Tales Tiecher; Paulo Ademar Avelar Ferreira; Fernando Teixeira Nicoloso; Hilda Hildebrand Soriani; Liana Veronica Rossato; Tanja Mimmo; Stefano Cesco; Cledimar Rogério Lourenzi; Admir José Giachini; Gustavo Brunetto
The occurrence of high levels of Cu in vineyard soils is often the result of intensive use of fungicides for the preventive control of foliar diseases and can cause toxicity to plants. Nowadays many grape growers in Southern Brazil have replaced Cu-based with Zn-based products. The aim of the study was to evaluate whether the increase in Zn concentration in a soil with high Cu contents can interfere with the dynamics of these elements, and if this increase in Zn may cause toxicity to maize (Zea mays L.). Soil samples were collected in two areas, one in a vineyard with more than 30 years of cultivation and high concentration of Cu and the other on a natural grassland area adjacent to the vineyard. Different doses of Cu and Zn were added to the soil, and the adsorption isotherms were built following the Langmuirs model. In a second experiment, the vineyard soil was spiked with different Zn concentrations (0, 30, 60, 90, 180, and 270mg Zn kg(-1)) in 3kg pots where maize was grown in a greenhouse for 35 days. When Cu and Zn were added together, there was a reduction in the quantities adsorbed, especially for Zn. Zn addition decreased the total plant dry matter and specific leaf mass. Furthermore, with the increase in the activity of catalase, an activation of the antioxidant system was observed. However, the system was not sufficiently effective to reverse the stress levels imposed on soil, especially in plants grown in the highest doses of Zn. At doses higher than 90Znmgkg(-1) in the Cu-contaminated vineyard soil, maize plants were no longer able to activate the protection mechanism and suffered from metal stress, resulting in suppressed dry matter yields due to impaired functioning of the photosynthetic apparatus and changes in the enzymatic activity of plants. Replacement of Cu- by Zn-based fungicides to avoid Cu toxicity has resulted in soil vineyards contaminated with these metals and damaging of plant photosynthetic apparatus and enzyme activity.
Plant Physiology and Biochemistry | 2016
Eduardo Girotto; Carlos Alberto Ceretta; Liana Veronica Rossato; Júlia Gomes Farias; Gustavo Brunetto; Alcione Miotto; Tadeu Luis Tiecher; Lessandro De Conti; Cledimar Rogério Lourenzi; Roberta Schmatz; Admir José Giachini; Fernando Teixeira Nicoloso
Soils used for the cultivation of grapes generally have a long history of copper (Cu) based fungicide applications. As a result, these soils can accumulate Cu at levels that are capable of causing toxicity in plants that co-inhabit the vineyards. The aim of the present study was to evaluate growth parameters and oxidative stress in black oat plants grown in vineyard soils contaminated with high levels of Cu. Soil samples were collected from the Serra Gaúcha and Campanha Gaúcha regions, which are the main wine producing regions in the state of Rio Grande do Sul, in southern Brazil. Experiments were conducted in a greenhouse in 2009, with soils containing Cu concentrations from 2.2 to 328.7 mg kg(-1). Evaluated parameters included plant root and shoot dry matter, Cu concentration in the plants tissues, and enzymatic and non-enzymatic biochemical parameters related to oxidative stress in the shoots of plants harvested 15 and 40 days after emergence. The Cu absorbed by plants predominantly accumulated in the roots, with little to no translocation to the shoots. Even so, oat plants showed symptoms of toxicity when grown in soils containing high Cu concentrations. The enzymatic and non-enzymatic antioxidant systems of oat plants were unable to reverse the imposed oxidative stress conditions.
Bragantia | 2017
Rafael da Rosa Couto; Paulo Ademar Avelar Ferreira; Carlos Alberto Ceretta; Cledimar Rogério Lourenzi; Daniela Basso Facco; Adriele Tassinari; Rogério Piccin; Lessandro De Conti; Luciano Colpo Gatiboni; Dênis Eduardo Schapanski; Gustavo Brunetto
Applications for long periods of organic animal waste as a source of nutrients to crops can contaminate the soil and the surface and subsurface waters. This study aimed to evaluate how the utilization of organic waste, after successive applications, affects P fractions in the soil and consequently environmental contamination. In an experiment conducted for 8 years, totaling 12 applications with pig slurry manure (PSM), liquid cattle manure (LCM), swine deep bedding (SDB), and mineral fertilizer (NPK), 460; 505; 1.111; and 535 kg P∙ha−1 were added to the soil through PSM, LCM, SDB, and NPK, respectively. In September 2012, soil samples were collected in the layers 0.0 – 0.04; 0.04 – 0.08; 0.08 – 0.12; 0.12 – 0.16; 0.16 – 0.20 m, prepared and subjected to a sequential chemical fractionation of P. The 12 applications of pig slurry, liquid cattle manure, swine deep bedding and NPK fertilizer for eight years (urea + triple superphosphate + potassium chloride) provided accumulations of P fractions in the soil that were above the necessary for a proper nutrition to plants considering the available P fractions (AER + organic NaHCO3 + inorganic NaHCO3) in the soil. In addition, they showed that the use of swine deep bedding, followed by pig slurry, means higher levels of available P fractions in the soil. In this sense, the establishment of a dosage of organic waste to meet the nitrogen need of crops is not an environmentally appropriate parameter. It may cause P accumulation in the soil, increased absorption ability of plants and soil support, contributing to environmental contamination.
Pesquisa Agropecuaria Brasileira | 2016
Cledimar Rogério Lourenzi; Eloi Erhard Scherer; Carlos Alberto Ceretta; Tadeu Luis Tiecher; Adriana Cancian; Paulo Ademar Avelar Ferreira; Gustavo Brunetto
The objective of this work was to determine changes in the chemical attributes of an Oxisol after successive applications of organic compounds with pig slurry and wood shavings, under a no‑tillage system. The experiment was conducted in the municipality of Chapeco, in the state of Santa Catarina, Brazil, in an Oxisol, from September 2005 to August 2011. The doses of 0, 2, 4, 8, and 16 Mg ha -1 compound with pig slurry and shavings were applied annually, as well as a treatment with mineral fertilizer (NPK). After six applications, soil was collected at the 0–4, 4–8, 8–12, 12–16, 16–20, 20–40, and 40–60‑cm layers and the chemical attributes were evaluated. The highest doses of the organic compound increased soil pH and reduced potential acidity. The applications of the organic compound derived from swine manure and wood shavings promoted changes in the chemical attributes of the evaluated Oxisol, especially in the upper soil layers, with greater emphasis on increased soil pH and P, K, Cu, and Zn contents. The use of 4 Mg ha -1 of the compound maintains the soil chemical attributes similar to those of the NPK treatment, which followed official recommendation for the states of Rio Grande do Sul and Santa Catarina, besides keeping the P content in the surface layers within the environmental critical limit for soils with high clay content.
Pesquisa Agropecuaria Brasileira | 2017
Lessandro De Conti; Carlos Alberto Ceretta; Rafael da Rosa Couto; Paulo Ademar Avelar Ferreira; Lincon Oliveira Stefanello da Silva; Rogério Piccin; Cledimar Rogério Lourenzi; Eduardo Girotto; Gustavo Brunetto
The objective of this work was to evaluate the effect of pig slurry applications on the exchangeable Al content, activity, and distribution of Al chemical species in the soil solution. Soil samples of a Typic Hapludalf were obtained from an experiment conducted during eight years, with 19 applications of 0, 20, 40, and 80 m3 ha-1 pig slurry. The soil samples were collected in stratified layers to determine exchangeable Al content and to extract the soil solution by the saturated soil paste method. The concentrations of the main cations and anions, dissolved organic carbon, and pH in the soil solution were determined. The distribution of the chemical species of Al and the activity of the Al3+ species were obtained through the Visual Minteq software. The application of pig slurry does not change the exchangeable Al content in the soil and the Al3+ activity in the soil solution. The low Al3+ activity in the topsoil layers does not present risk of toxicity for most crops. Pig slurry applications increase the proportion of the AlHPO4 and AlSO4 species in the soil solution, by increasing the concentration of soluble inorganic ligands.
Bragantia | 2018
Gustavo Brunetto; Lucas Benedet; Vítor Gabriel Ambrosini; Jucinei José Comin; George Wellington Bastos de Melo; Matheus Ademir dos Santos; Cledimar Rogério Lourenzi; Arcangelo Loss; Paulo Belli Filho; Djalma Eugênio Schmitt; Rafael da Rosa Couto
The present study aimed to evaluate the accumulation and distribution of Cu and Zn fractions in the profile of an Inceptisol by application of fungicides with a previous history of apple cultivation in southern Brazil. Stratified soil samples (0.0 ? 0.025 m, 0.025 ?0.050 m, 0.05 ? 0.10 m, 0.10 ? 0.15 m, 0.15 ? 0.20 m and 0.20 ? 0.40 m depth) were collected in two apple orchards (8 years old and 18 years old), and in a native pasture area adjacent to the orchards. The soil was subjected to analysis of physical and chemical properties and to chemical fractionation of Cu and Zn. The fractions of soluble, exchangeable, organic, residual and total Cu and Zn accumulated in the topsoil (0.0 ? 0.025 m) of the orchards, being higher in the orchard cultivated for 18 years. Most Cu, especially in the topsoil of the 18 years old orchard, accumulated in the less stable organic fraction, which can potentiate toxicity to plants and transfer Cu e Zn to ground water. In deeper layers, Cu was also distributed in the residual and mineral fractions, which are more stable. Most Zn in the soil of the apple orchards was distributed in the mineral and residual fractions, which have low mobility and low potential toxicity to plants. Key words: Malus domestica, trace elements, toxicity, environmental contamination.
Pesquisa Agropecuaria Brasileira | 2010
Carlos Alberto Ceretta; Felipe Lorensini; Gustavo Brunetto; Eduardo Girotto; Luciano Colpo Gatiboni; Cledimar Rogério Lourenzi; Tales Tiecher; L. de Conti; G. Trentin; Alcione Miotto
The objective of this work was to quantify the accumulation of phosphorus fractions in the soil subjected to successive pig slurry applications in a no-tillage system. At Santa Maria, Rio Grande do Sul state, Brazil, 0, 20, 40 and 80 m3 ha-1 doses of pig slurry were broadcasted for seven years on Argissolo Vermelho arenoso (Arenic Hapludult) before sowing each winter or summer crop, totalizing 0, 584, 1,168 and 2,336 kg ha-1 of P from pig slurry. Soil samples were collected in 0-2, 4-6, 8-10, 14-16 and 20-25 cm layers and submitted to P fractionation. Applications of pig slurry during seven years increased P contents to a depth of 25 cm, especially in the inorganic fractions extractable by anion exchange resin, NaHCO3 0.5 mol L-1 and NaOH 0.1 mol L-1. Pig slurry doses did not increase P content in organic fractions extracted by NaHCO3 0.5 mol L-1, but increased the content of organic fractions extracted by NaOH 0.5 e 0.1 mol L-1. Pig slurry applied to soil for large period has little effect on the P partition in inorganic and organic fractions. Successive pig slurry applications increase P contents in the soil predominantly in labile fractions, which can represent a potential risk for waterbeds contamination.
Geoderma | 2016
Tadeu Luis Tiecher; Carlos Alberto Ceretta; Paulo Ademar Avelar Ferreira; Cledimar Rogério Lourenzi; Tales Tiecher; Eduardo Girotto; Fernando Teixeira Nicoloso; Hilda Hildebrand Soriani; Lessandro De Conti; Tanja Mimmo; Stefano Cesco; Gustavo Brunetto
Agriculture, Ecosystems & Environment | 2016
Lessandro De Conti; Carlos Alberto Ceretta; Paulo Ademar Avelar Ferreira; Cledimar Rogério Lourenzi; Eduardo Girotto; Felipe Lorensini; Tadeu Luis Tiecher; Carina Marchezan; Mylena G. Anchieta; Gustavo Brunetto
Nutrient Cycling in Agroecosystems | 2016
Bruno Salvador Oliveira; Vítor Gabriel Ambrosini; Talita Trapp; Matheus Ademir dos Santos; Paula Beatriz Sete; Paulo Emílio Lovato; Arcângelo Loss; Jucinei José Comin; Cledimar Rogério Lourenzi; Rafael da Rosa Couto; Moreno Toselli; Gustavo Brunetto