12 results

An evaluation of land-use capability using the LESA method coupled with geostatistics in a GIS environment

Yingchao Wang ORCID logo , Hu Chen ORCID logo , Linshen Wang ORCID logo

26/Jul/2024

ABSTRACT Land-use effectiveness can be ensured by utilizing GIS and geostatistical tools in conjunction with land assessment methods to prevent soil erosion and salinization. This study employs a GIS-based LESA methodology, combined with geostatistics, to evaluate the land’s capacity to produce agricultural crops on calcareous soils. Land Evaluation for Agricultural Uses (LESA) key components are site assessment and land evaluation, with the former being non-soil-dependent and the latter being soil-dependent. Geostatical kriging was used to interpolate and generalize a GIS […]

Disposal of solid waste from civil construction: a screening proposal for a suitability system and case study in Nepomuceno, Minas Gerais

Luana Sousa Costa ORCID logo , Marcelo Henrique Procópio Pelegrino ORCID logo , Bruno Silva Villela ORCID logo , Maria Eduarda Carvalho Monteiro ORCID logo , Raísa Brito Vilela ORCID logo , Daniela de Fátima Pedroso ORCID logo , [...]

11/Mar/2024

ABSTRACT Most Brazilian municipalities do not have regulated areas for solid waste disposal in civil construction. Usually, residues are disposed of vacant lots and dumps, posing risks to the population health and the environment. Soils are the primary means for the disposal or recycling of waste, highlighting the importance of well-characterized soils and their respective landscape. This study aimed to establish a land suitability system for solid residues in civil construction and apply such information in a case study in […]

Visual Abstract

Grazing intensity and nitrogen fertilization timing to increase soil organic carbon stock and nitrogen in integrated crop-livestock systems

Talyta Zortéa ORCID logo , Tangriani Simioni Assmann ORCID logo , Carolina Riviera Duarte Maluche Baretta ORCID logo , Andre Brugnara Soares ORCID logo , Juliana Aparecida Marchetti ORCID logo , Rafaela Dulcieli Daneluz Rintzel ORCID logo , [...]

07/Dec/2023

ABSTRACT Integrated crop-livestock systems (ICLS) foster synergistic relationships to increase nitrogen (N) cycling and soil organic carbon (SOC) accrual in agricultural setups. This study evaluated how the grazing intensity and N fertilization (rates and timing) affect both SOC and N fractions, and soil organic matter chemical composition in an ICLS managed under no-tillage in an Oxisol, six years after initiation. The ICLS was compared to a nearby pasture (PA) and a native forest (NF). The treatments consisted of two grazing […]

Visual Abstract

Adapting the land agricultural suitability assessment scheme for drylands edaphoclimatic conditions

José Alexsandro Guimarães Lima ORCID logo , Francisca Evelice Cardoso de Souza ORCID logo , Francisca Gleiciane da Silva ORCID logo , Fabrício da Silva Terra ORCID logo , Diana Ferreira de Freitas ORCID logo , Mirian Cristina Gomes Costa ORCID logo , [...]

04/Sep/2023

ABSTRACT The rational exploitation of the land requires planning its agricultural use, which can be supported by the agricultural land suitability (ALS) assessment. The scheme to assess ALS proposed by Food Agricultural Organization (FAO) has been adopted in Brazil based on guiding charts for subtropical, humid tropical and semi-arid tropical climate. However, the guiding chart used for the semi-arid region has dramatically limited the ALS in drylands on which rainfed agriculture has been practiced. In this study, an adequation for […]

Visual Abstract

Residual biomass quality index: a tool for conservation agriculture

Cidimar Cassol ORCID logo , Paulo Cesar Conceição ORCID logo , Caroline Amadori ORCID logo , Maiara Karini Haskel ORCID logo , Leandro Alves de Freitas ORCID logo , Angela Regina Tomazoni ORCID logo

10/Jul/2023

ABSTRACT One of the pillars of a no-tillage system is the addition of adequate amounts of residue to keep the soil continuously covered. Cover crops are a tool for supplying the demand for the permanence of residues on the soil surface and releasing nutrients to the soil. However, there is no index that relates these two factors and can reconcile the maximum permanence of crop residues in the soil with the maximum N supply via N mineralization of such residues. […]

Visual Abstract

Land-use affecting organic carbon and its active components in soil aggregates in China

Xiaoqian Liu ORCID logo , Kaiwen Guo ORCID logo , Bin Li ORCID logo , Xin Li ORCID logo , Wei Li ORCID logo

01/Jun/2022

ABSTRACT Due to large-scale wetland reclamation, the typical wetland had been conversed to different wetland use types (upland field, paddy field, and artificial forest) in the Sanjiang Plain. However, there are scarce data regarding soil aggregates and active organic carbons during land-use transition. Here, soil aggregates and the changes in content and storage of active organic carbon [total organic carbon (TOC), dissolved organic carbon (DOC), microbial biomass carbon (MBC), and readily oxidized carbon (ROC)] were studied under three land-uses reclaiming […]

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

Sugarcane Root Development and Yield under Different Soil Tillage Practices

Emmerson Rodrigues de Moraes, José Geraldo Mageste, Regina Maria Quintão Lana, José Luiz Rodrigues Torres, Luis Augusto da Silva Domingues, Ernane Miranda Lemes, [...]

06/Feb/2019

ABSTRACT New strategies for sugarcane production have been very important since the incorporation of ethanol in the Brazilian energy mix in the early 1970s. Prior to planting sugarcane, the soil is prepared, and this process can affect root development and, consequently, sugarcane production. This study was conducted in an area of sugarcane crop renewal in the Cerrado biome (Brazilian tropical savanna), with the objective of identifying which tillage system generates the better root development and improved yield in sugarcane. The […]

Performance of Flooded Rice Grown in Succession to Winter Cover Crops

Silmara da Luz Correia, Paulo Regis Ferreira da Silva, Madalena Boeni, Christian Bredemeier, Ibanor Anghinoni, Guilherme Batista Menegati, [...]

05/Feb/2018

ABSTRACT: Mean grain yield of flooded rice in southern Brazil has increased in recent years due to the use of high-yield cultivars and improvement of crop management practices. Nevertheless, stagnation in grain yields has been observed in some rice-producing regions. Adoption of conservation tillage systems based on cover crops may be a strategy to increase rice grain yield potential. The objective of the present study was to evaluate the effect of winter cover crops on initial establishment, development, and grain […]

Land Use and Changes in Soil Morphology and Physical-Chemical Properties in Southern Amazon

Vander Freitas Melo, Alessandro Góis Orrutéa, Antônio Carlos Vargas Motta, Samara Alves Testoni

21/Jul/2017

ABSTRACT Many Amazonian farmers use the slash-and-burn method rather than fertilization for crop production. The aim of the present study was to evaluate changes in the morphological, physical, and chemical properties of naturally fertile Inceptisols after conversion from native forest to different uses in southern Amazonia, Brazil. Land covered by dense native forest (NF) was split into four areas of 1.0 ha each. Three areas were slashed and burned and then cultivated for 11 years with coffee (CO), secondary forest […]

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