148 results

Modeling the effect of terracing on runoff control in a rural catchment in southern Brazil

Larissa Werle ORCID logo , Jean Paolo Gomes Minella ORCID logo , Gustavo Henrique Merten ORCID logo , Douglas Rodrigo Kaiser ORCID logo , Alexandre Schlesner ORCID logo , Alice Prates Bisso Dambroz ORCID logo , [...]

16/Jun/2025

ABSTRACT Extreme weather events, such as heavy rains and droughts, necessitate the rapid adaptation of production systems to prevent the degradation of natural resources and to maximize production potential. Defining adaptive practices requires an in-depth understanding of the factors that control the formation and propagation of surface runoff and the identification of specific practices tailored to each location. No-till system, coupled with complementary storm runoff management practices, is effective in controlling surface runoff and related processes. However, the planning of […]

Visual Abstract

Soil carbon stocks as affected by land-use changes across the Pampa of southern Brazil

Jessica Maciel Machado ORCID logo , Jonathas Carvalhedo Johnson ORCID logo , Carlos Gustavo Tornquist ORCID logo , Elena Polto Taborda ORCID logo , Bruna Raquel Winck ORCID logo

19/Jun/2024

ABSTRACT The “campos” of the Pampa are unique Brazilian ecosystems, which provide key environmental services, including C storage. These grassy ecosystems have been rapidly converted to intensive land-uses, mainly intensive grain crops (soybeans) and Eucalyptus silviculture. These new land-uses could decrease soil C stocks, depending on soil management. This study aimed to assess soil organic carbon (SOC) changes after the conversion of native grasslands to cropland (soybeans/cover crops under no-tillage) and forestry (Eucalyptus). Eight representative sites in this biome were […]

Visual Abstract

Conservation agriculture practices in a peanut cropping system: Effects on pod yield and soil penetration resistance

Olavo Betiol ORCID logo , Denizart Bolonhezi ORCID logo , Élcio Ríos Perez Leal ORCID logo , Chandler Edwin Gruener ORCID logo , Marcos Doniseti Michelotto ORCID logo , Carlos Eduardo Angeli Furlani ORCID logo , [...]

16/Aug/2023

ABSTRACT Conservation agriculture principles applied to peanut can reduce soil erosion and production costs when cultivated in rotation with sugarcane. Still, the problem with soil compaction is the leading cause of skepticism about the efficacy of this practice. This research aimed to study the effect of three soil management strategies compared with conventional for peanut cv. IAC-OL3, cultivated in rotation with sugarcane using the MEIOSI (method of intercropping occurring simultaneously) system for agronomic practices with additional analysis on changes in […]

Visual Abstract

Phosphorus lability in a subtropical Acrisol under long-term integrated crop-livestock system: impacts of grazing management and cropping system

Júlia de Assis ORCID logo , Luciano Pinzon Brauwers ORCID logo , Lóren Pacheco Duarte ORCID logo , Gian Ghisleni ORCID logo , Tales Tiecher ORCID logo , Paulo César de Faccio Carvalho ORCID logo , [...]

28/Oct/2022

ABSTRACT Studies on lability of soil phosphorus (P) under integrated crop-livestock systems (ICLS) are still scarce, especially for deep soil layers (more than 0.20 m depth) and different managements in the crop and livestock phase. Distinct management in these phases may lead to a different distribution of soil P pools according to its lability (labile, moderately labile, less labile and residual) and, consequently, the P availability for plant nutrition. This study aimed to determine the soil P pools, by P […]

Visual Abstract

Soil management practices adopted by farmers and how they perceive conservation agriculture

Tiago Santos Telles ORCID logo , Thadeu Rodrigues de Melo ORCID logo , Ana Julia Righetto ORCID logo , Elizeu Jonas Didoné ORCID logo , Graziela Moraes de Cesare Barbosa ORCID logo

14/Apr/2022

ABSTRACT In some rural properties of Brazil, soil and water conservation practices are partially or inappropriately implemented, intensifying soil erosion, even in no-tillage (NT) areas. This study aimed to check the farmer’s understanding of conservation agriculture (CA) and assess whether they are using practices appropriate to soil conservation. A basin in the state of Paraná, in Southern Brazil, was selected. Surveys were conducted based on a structured questionnaire and in-person interviews of 234 farmers. Among these farmers, 67 % do […]

Visual Abstract

Liming and grazing intensities effects on soil mineral nitrogen throughout the pasture cycle in a subtropical integrated crop-livestock system

Felipe Dalla-zen Bertol ORCID logo , Amanda Posselt Martins ORCID logo , Luiz Gustavo de Oliveira Denardin ORCID logo , Taise Robinson Kunrath ORCID logo , William de Souza Filho ORCID logo , Mateus Westerhofer Goulart ORCID logo , [...]

06/Apr/2022

ABSTRACT Grazing intensity is a preponderant factor for the success of integrated crop-livestock systems (ICLS). Management of grazing intensity impacts soil organic matter (SOM) dynamics, soil reacidification process, and amount and quality of residues added to the ICLS. Consequently, the soil mineral nitrogen (N) forms may present different behavior throughout the pasture cycle, because they are directed linked to SOM and soil acidity dynamics. This study aimed to evaluate the impact of grazing intensities and liming in the temporal variation […]

Visual Abstract

Greenhouse gas emissions during rice crop year affected by management of rice straw and ryegrass

Mara Grohs ORCID logo , Enio Marchesan ORCID logo , Sandro José Giacomini ORCID logo , Alberto Cargnelutti Filho ORCID logo , Isabel Schlegel Werle ORCID logo , Anelise Lencina da Silva ORCID logo , [...]

03/Aug/2020

ABSTRACT One of the challenges in rice areas is the sustainable post-harvest system, which involves using rice straw management and cover crop species. In this context, this study aimed to evaluate the emission of methane (CH4) and nitrous oxide (N2O) with the use of different post-harvest management of rice straw as well as with the combined use of ryegrass. A field experiment was conducted during the 2016 off-season and 2016/17 rice crop season with different post-harvest rice straw management: maintaining […]

Visual Abstract

Nitrous Oxide Emissions in a Wheat/Corn Succession Combining Dairy Slurry and Urea as Nitrogen Sources

Celso Aita, Felipe Tonetto, Rogerio Gonzatto, Stefen Barbosa Pujol, Janquieli Schirmann, Juliano dos Santos Depoi, [...]

03/May/2018

ABSTRACT: The impact on nitrous oxide (N2O) emissions caused by combining dairy slurry (DS) and urea to supply crops with nitrogen (N) is still not well characterized. The main objective of this study was to compare the differences between N2O emissions in the cases of exclusive use of urea and the combined use of DS and urea as N sources to no-tillage wheat and corn. We also compared N2O emissions between two DS application methods (surface-broadcast vs. injection), as well […]

Visual Evaluation of the Soil Structure under Different Management Systems in Lowlands in Southern Brazil

Ivana Kruger Tuchtenhagen, Cláudia Liane Rodrigues de Lima, Adilson Luís Bamberg, Rachel Muylaert Locks Guimarães, Pulido-Moncada Mansonia

20/Apr/2018

ABSTRACT The “Visual Evaluation of Soil Structure” (VESS) is a method used primarily to evaluate the soil structural quality of Oxisols in Brazil and secondly for more specific research, consultancy, and teaching purposes. Since the methodology was never applied and compared with laboratory evaluations of physical properties of hydromorphic soils of the Pampa biome in the south of Brazil, this study evaluated the use of VESS as a visual indicator of the structure quality of a typic eutrophic Albaqualf soil […]

Is Structural Quality as Assessed by the “Profil Cultural” Method Related to Quantitative Indicators of Soil Physical Quality?

Rafaela Watanabe, Cássio Antonio Tormena, Maria de Fátima Guimarães, João Tavares, Ricardo Ralisch, Julio Franchini, [...]

01/Feb/2018

ABSTRACT Soil and crop management systems change the soil structure, thereby affecting soil quality. The “profil cultural” method (PCM) has been used to identify the effects of management systems on soil structure; however, few studies relate the structures identified by the PCM to quantitative indicators of soil structural quality. This study aimed to quantify soil structures using the PCM and relate these structures to bulk density (Bd), critical bulk density (Bdc), soil aeration capacity (εa), least limiting water range (LLWR), […]

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