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All publications of “Ildegardis Bertol”

9 results

Long-Term Effect of Soil Use and Management on Organic Carbon and Aggregate Stability

Neuro Hilton Wolschick, Fabrício Tondello Barbosa, Ildegardis Bertol, Bárbara Bagio, Danieli Schneiders Kaufmann

05/Sep/2018

ABSTRACT: The conversion of native grassland into farmland causes changes in the soil. Tillage has profound effects on soil organic matter. The intensification of soil tillage decreases soil quality by reducing aggregate stability. Soil aggregate stability and soil organic matter are key indicators for soil quality and environmental sustainability in agro-ecosystems. The aim of the present study is to evaluate the total organic carbon content and the physical and chemical fractions of the organic matter in a soil under different […]

Water Erosion in a Long-Term Soil Management Experiment with a Humic Cambisol

Jefferson Schick, Ildegardis Bertol, Fabrício Tondello Barbosa, David José Miquelluti, Neroli Pedro Cogo

01/Aug/2017

ABSTRACT Water erosion, the main factor in soil degradation, is strongly influenced by soil cover and management. The objective of this study was to determine soil and water losses under natural rainfall conditions from 1993 to 2012 in the southern Santa Catarina Plateau, Brazil, in 3.5 × 22.1 m plots with crops in rotation to study the following management treatments: conventional tillage (CT), minimum tillage (MT), and no-tillage (NT), and a treatment with bare soil (BS). The soil cover remaining […]

Effects of Soil Management Practices on Water Erosion under Natural Rainfall Conditions on a Humic Dystrudept

Vinicius Ferreira Chaves de Souza, Ildegardis Bertol, Neuro Hilton Wolschick

12/Jun/2017

ABSTRACT Water erosion is the main cause of soil degradation and is influenced by rainfall, soil, topography, land use, soil cover and management, and conservation practices. The objective of this study was to quantify water erosion in a Humic Dystrudept in two experiments. In experiment I, treatments consisted of different rates of fertilizer applied to the soil surface under no-tillage conditions. In experiment II, treatments consisted of a no-tillage in natural rangeland, burned natural rangeland and natural rangeland. Forage turnip, […]

Water Erosion in Different Slope Lengths on Bare Soil

Bárbara Bagio, Ildegardis Bertol, Neuro Hilton Wolschick, Danieli Schneiders, Maria Aparecida do Nascimento dos Santos

20/Feb/2017

ABSTRACT Water erosion degrades the soil and contaminates the environment, and one influential factor on erosion is slope length. The aim of this study was to quantify losses of soil (SL) and water (WL) in a Humic Cambisol in a field experiment under natural rainfall conditions from July 4, 2014 to June 18, 2015 in individual events of 41 erosive rains in the Southern Plateau of Santa Catarina and to estimate soil losses through the USLE and RUSLE models. The […]

Nutrient and Organic Carbon Losses, Enrichment Rate, and Cost of Water Erosion

Ildegardis Bertol, Rodrigo Vieira Luciano, Camilo Bertol, Bárbara Bagio

20/Feb/2017

ABSTRACT Soil erosion from water causes loss of nutrients and organic carbon, enriches the environment outside the erosion site, and results in costs. The no-tillage system generates increased nutrient and C content in the topsoil and, although it controls erosion, it can produce a more enriched runoff than in the conventional tillage system. This study was conducted in a Humic Cambisol in natural rainfall from 1997 to 2012 to quantify the contents and total losses of nutrients and organic C […]

Soil Properties and Plant Biomass Production in Natural Rangeland Management Systems

Romeu de Souza Werner, Fabrício Tondello Barbosa, Ildegardis Bertol, Neuro Hilton Wolshick, Kristiana Fiorentin dos Santos, Josie Moraes Mota

05/Oct/2016

ABSTRACT Improper management of rangelands can cause land degradation and reduce the economic efficiency of livestock activity. The aim of this study was to evaluate soil properties and quantify plant biomass production in four natural rangeland management systems in the Santa Catarina Plateau (Planalto Catarinense) of Brazil. The treatments, which included mowed natural rangeland (NR), burned natural rangeland (BR), natural rangeland improved through the introduction of plant species after harrowing (IH), and natural rangeland improved through the introduction of plant […]

GROUPS OF INCEPTISOL PEDONS BASED ON CHEMICAL AND PHYSICAL PROPERTIES APPLYING MULTIVARIATE STATISTICS

Pablo Grahl dos Santos, Ildegardis Bertol, David José Miquelluti, Jaime Antônio Almeida, Álvaro Luiz Mafra

01/Mar/2015

In a soil survey, a detailed description of a set of soil properties is important for analyzing and understanding the interactions of several soil forming processes. Thus, multivariate analysis may be an important statistical tool to better interpret and understand the relationships and similarities between pedons. The aim of this study was to differentiate and group similar pedons based on physical and chemical properties using multivariate statistics. The study was carried out in Lages, SC, Brazil, at 27º 48’ S […]

WATER INFILTRATION IN TWO CULTIVATED SOILS IN SOUTHERN BRAZIL

Ildegardis Bertol, Fabrício Tondello Barbosa, Camilo Bertol, Rodrigo Vieira Luciano

01/Mar/2015

Infiltration is the passage of water through the soil surface, influenced by the soil type and cultivation and by the soil roughness, surface cover and water content. Infiltration absorbs most of the rainwater and is therefore crucial for planning mechanical conservation practices to manage runoff. This study determined water infiltration in two soil types under different types of management and cultivation, with simulated rainfall of varying intensity and duration applied at different times, and to adjust the empirical model of […]

EFFECT OF SOIL TILLAGE AND PLANT RESIDUE ON SURFACE ROUGHNESS OF AN OXISOL UNDER SIMULATED RAIN

Elói Panachuki, Ildegardis Bertol, Teodorico Alves Sobrinho, Paulo Tarso Sanches de Oliveira, Dulce Buchala Bicca Rodrigues

01/Jan/2015

Surface roughness of the soil is formed by mechanical tillage and is also influenced by the kind and amount of plant residue, among other factors. Its persistence over time mainly depends on the fundamental characteristics of rain and soil type. However, few studies have been developed to evaluate these factors in Latossolos (Oxisols). In this study, we evaluated the effect of soil tillage and of amounts of plant residue on surface roughness of an Oxisol under simulated rain. Treatments consisted […]