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All publications of “Gustavo Brunetto”

8 results

Rhizophagus Clarus and Phosphorus in Crotalaria juncea: Growth, Glomalin Content and Acid Phosphatase Activity in a Copper-Contaminated Soil

Paulo Ademar Avelar Ferreira, Carlos Alberto Ceretta, Tales Tiecher, Daniela Basso Facco, Luana Paula Garlet, Cláudio Roberto Fonsêca Sousa Soares, [...]

23/Jul/2018

ABSTRACT Crotalaria juncea is used as plant cover in grape vineyards in Brazil, which usually present soils with high copper (Cu) levels due to the application of Cu-based phyto-sanitary products. Under this condition an increase growth and cover of C. juncea is needed to improve the phytoremediation processes in those soils. Some alternatives to achieve this condition is the inoculation with arbuscular mycorrhizal fungi (AMF), which has demonstrated an important increase of plant growth in Cu-contaminated soils at different soil […]

Chemical, Biological, and Biochemical Parameters of the Soil P Cycle After Long-Term Pig Slurry Application in No-Tillage System

Tales Tiecher, Tadeu Luis Tiecher, Fábio Joel Kochem Mallmann, Mohsin Zafar, Carlos Alberto Ceretta, Cledimar Rogério Lourenzi, [...]

30/Oct/2017

ABSTRACT In Southern Brazil, agricultural soils are often treated over long periods with annual pig slurry (PS) applications, and their influence on soil nutrient dynamics should be monitored. This study aimed to evaluate the P forms accumulated in the soil and some biological and biochemical parameters of the P cycle after 19 successive PS applications over eight years, in a no-tillage (NT) system. Pig slurry was applied at rates of 0, 20, 40, and 80 m3 ha-1 per crop. Several […]

Nitrogen Transfer from Cover Crop Residues to Onion Grown under Minimum Tillage in Southern Brazil

Leoncio de Paula Koucher, Gustavo Brunetto, Vilmar Müller, Monique Souza, Andria Paula Lima, Sandro José Giacomini, [...]

24/Aug/2017

ABSTRACT Nitrogen derived from cover crop residues may contribute to the nutrition of onion grown under minimum tillage (MT) and cultivated in rotation. The aim of this study was to evaluate the N transferred from different cover crop residues to the onion crop cultivated under MT in southern Brazil. In June 2014, oilseed radish, black oat, and oilseed radish + black oat residues labeled with 15N were deposited on the soil surface before transplanting onions. During the growth season and […]

Chemical Properties in Macroaggregates of a Humic Dystrudept Cultivated with Onion under No-Till and Conventional Tillage Systems

Luiz Henrique dos Santos, Ludiana Canton, Barbara Santos Ventura, Guilherme Wilbert Ferreira, Claudinei Kurtz, Gustavo Brunetto, [...]

12/Jun/2017

ABSTRACT Nutrients present in soil aggregates are essential for maintaining the productive capacity of agroecosystems and environmental quality. The aim of this study was to evaluate the chemical properties of macroaggregates of a Humic Dystrudept cultivated with onions under a no-till vegetable system (NTVS) compared to the conventional tillage system (CTS) and a forest area in Ituporanga, SC, Brazil. The treatments consisted of the following single and mixed cover crops with onion under the NTVS: spontaneous vegetation, 100 % black […]

Release of Phosphorus Forms from Cover Crop Residues in Agroecological No-Till Onion Production

Rodolfo Assis de Oliveira, Jucinei José Comin, Tales Tiecher, Rogério Piccin, Luiza Michelon Somavilla, Arcângelo Loss, [...]

29/Mar/2017

ABSTRACT Cover crops grown alone or in association can take up different amounts of phosphorus (P) from the soil and accumulate it in different P-forms in plant tissue. Cover crop residues with a higher content of readily decomposed forms may release P more quickly for the next onion crop. The aim of this study was to evaluate the release of P forms from residues of single and mixed cover crops in agroecological no-till onion (Allium cepa L.) production. The experiment […]

Cover Crops Effects on Soil Chemical Properties and Onion Yield

Rodolfo Assis de Oliveira, Gustavo Brunetto, Arcângelo Loss, Luciano Colpo Gatiboni, Claudinei Kürtz, Vilmar Müller, [...]

06/Jun/2016

ABSTRACT Cover crops contribute to nutrient cycling and may improve soil chemical properties and, consequently, increase crop yield. The aim of this study was to evaluate cover crop residue decomposition and nutrient release, and the effects of these plants on soil chemical properties and on onion (Allium cepa L.) yield in a no-tillage system. The experiment was carried out in an Inceptisol in southern Brazil, where cover crops were sown in April 2012 and 2013. In July 2013, shoots of […]

TOTAL ORGANIC CARBON AND SOIL AGGREGATION UNDER A NO-TILLAGE AGROECOLOGICAL SYSTEM AND CONVENTIONAL TILLAGE SYSTEM FOR ONION

Arcângelo Loss, Alex Basso, Bruno Salvador Oliveira, Leôncio de Paula Koucher, Rodolfo Assis de Oliveira, Claudinei Kurtz, [...]

01/Jul/2015

As a result of soil management systems, like the conventional tillage system (CTS) versus the no-tillage system (NTS) for vegetable crops, modifications in soil properties occur, which change, for example, the rates of soil aggregation and the content of total organic carbon (TOC). The aim of this study was to quantify the TOC contents and evaluate the rates of soil aggregation and the distribution of aggregates by diameter classes in a soil planted to onion in NTS and CTS and […]

Effects of Pig Slurry Application and Crops on Phosphorus Content in Soil and the Chemical Species in Solution

Lessandro De Conti, Carlos Alberto Ceretta, Paulo Ademar Avelar Ferreira, Felipe Lorensini, Cledimar Rogério Lourenzi, Renan Fagan Vidal, [...]

01/May/2015

The application of pig slurry rates and plant cultivation can modify the soil phosphorus (P) content and distribution of chemical species in solution. The purpose of this study was to evaluate the total P, available P and P in solution, and the distribution of chemical P species in solution, in a soil under longstanding pig slurry applications and crop cultivation. The study was carried out in soil columns with undisturbed structure, collected in an experiment conducted for eight years in […]