Adjustment of the expedite method for clay content determination in Rondônia soils

Schlindwein, Jairo André; Miotti, Alan Antônio; Fioreli-Perira, Elaine Cosma; Pequeno, Petrus Luiz de Luna; Bortolon, Leandro; Marcolan, A. L.

doi:10.1590/s0103-84782011001200010

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…The soil CEC was determined by the ethylene diamine tetraacetic acid (EDTA)-ammonium salt rapid method [27]. The soil clay content was determined by the pipette method [28]. The type of tested soil was black soil, equivalent to typical Phaeozem in the World Reference Base (WRB) system [29].…”

Section: Site Descriptionmentioning

confidence: 99%

Root Contact between Maize and Alfalfa Facilitates Nitrogen Transfer and Uptake Using Techniques of Foliar 15N-Labeling

et al. 2020

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Belowground nitrogen (N) transfer from legumes to non-legumes provides an important N source for crop yield and N utilization. However, whether root contact facilitates N transfer and the extent to which N transfer contributes to crop productivity and N utilization have not been clarified. In our study, two-year rain shelter experiments were conducted to quantify the effect of root contact on N transfer in a maize/alfalfa intercropping system. N transfer occurred mainly one direction from alfalfa to maize during the growth period. Following the N0 treatment, the amount of N transfer from alfalfa to maize was 204.56 mg pot−1 with no root barrier and 165.13 mg pot−1 with a nylon net barrier, accounting for 4.72% and 4.48% of the total N accumulated in maize, respectively. Following the N1 treatment, the amount of N transfer from alfalfa to maize was 197.70 mg pot−1 with no root barrier and 139.04 mg pot−1 with a nylon net barrier, accounting for 3.64% and 2.36% of the total N accumulated in the maize, respectively. Furthermore, the amount of N transfer without no root barrier was 1.24–1.42 times higher than that with a nylon net barrier regardless of the level of N addition. Our results highlight the importance and the relevance of root contact for the enhancement of N transfer in a maize/alfalfa intercropping system.

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Section: Site Descriptionmentioning

confidence: 99%

Root Contact between Maize and Alfalfa Facilitates Nitrogen Transfer and Uptake Using Techniques of Foliar 15N-Labeling

et al. 2020

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“…The indigenous vegetation presents diverse characteristics, comprising open ombrophylous forests, dense ombrophylous forests, savannas, pioneer formations, and contact or transition forests. Additionally, there are areas of anthropogenic activity that are primarily occupied by pastures and family farming (SEMA, 2012;Schlindwein et al 2012). In this region, deforestation occurs predominantly in areas that consist of open ombrophylous forests and dense ombrophylous forests, predominantly due to livestock farming.…”

Section: Study Areamentioning

confidence: 99%

Fuzzy Inference System For Mapping Forest Fire Susceptibility In Northern Rondônia, Brazil

Duarte,

Acácio da Silva,

Paixão de Sousa

et al. 2024

GES

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Forest fires are global phenomena that pose an accelerating threat to ecosystems, affect the population life quality and contribute to climate change. The mapping of fire susceptibility provides proper direction for mitigating measures for these events. However, predicting their occurrence and scope is complicated since many of their causes are related to human practices and climatological variations. To predict fire occurrences, this study applies a fuzzy inference system methodology implemented in R software and using triangular and trapezoidal functions that comprise four input parameters (temperature, rainfall, distance from highways, and land use and occupation) obtained from remote sensing data and processed through GIS environment. The fuzzy system classified 63.27% of the study area as having high and very high fire susceptibility. The high density of fire occurrences in these classes shows the high precision of the proposed model, which was confirmed by the area under the curve (AUC) value of 0.879. The application of the fuzzy system using two extreme climate events (rainy summer and dry summer) showed that the model is highly responsive to temperature and rainfall variations, which was verified by the sensitivity analysis. The results obtained with the system can assist in decision-making for appropriate firefighting actions in the region.

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“…The predominant soils in Rondônia are the Latossolos, which occupy an area of around 58%, being 26% of the Latossolo Vermelho Amarelo, 16% of the Latossolo Vermelho and 16% of the Latossolo Amarelo. Argissolos and Neossolos occupy 11% of the territory each, Cambissolos occupy 10% and Gleissolos occupy 9%.The other soil classes occupy the rest of the area (12%) (Schlindwein et al, 2012).The vegetation typology is called Dense Ombrophilous Forest (IBGE, 2004), composed of dense and multilayered trees between 25 and 30 meters high .…”

Section: Location and Characterizationmentioning

confidence: 99%

Atributos Químicos De Solos Sob Ambientes Naturais E Antropizados Na Região De Humaitá-Am

Jordão¹,

Campos²,

Frozzi³

et al. 2022

Solos Amazônicos: Atributos Físicos, Químicos, Erodibilidade E Suscetibilidade Magnética

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Direitos para esta edição cedidos à Atena Editora pelos autores. Open access publication by Atena Editora Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica.A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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Adjustment of the expedite method for clay content determination in Rondônia soils

Abstract: Soil clay content is an important soil attribute and has been used to classification of phosphorus status in the soil

Cited by 3 publications

References 3 publications

Root Contact between Maize and Alfalfa Facilitates Nitrogen Transfer and Uptake Using Techniques of Foliar 15N-Labeling

Root Contact between Maize and Alfalfa Facilitates Nitrogen Transfer and Uptake Using Techniques of Foliar 15N-Labeling

Fuzzy Inference System For Mapping Forest Fire Susceptibility In Northern Rondônia, Brazil

Atributos Químicos De Solos Sob Ambientes Naturais E Antropizados Na Região De Humaitá-Am

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