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José Francirlei de Oliveira
Universidade Estadual de Londrina
15Publications
4H-index
58Citations
Publications 15
Newest
#2Stanislas Mayi (UEL: Universidade Estadual de Londrina)H-Index: 1
Last.Maria de Fátima Guimarães (UEL: Universidade Estadual de Londrina)H-Index: 20
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The uniform management of soil, without considering the local soil spatial variability of its properties, may accelerate its degradation process. The objectives of this study were to: (i) delineate homogeneous management zones (HMZs) using the multivariate analysis approach, and (ii) evaluate the effect of uniform soil management on the physical–hydraulic attributes of these HMZ. The study was carried out in two fields: field 1 (F1) of 312 ha and field 2 (F2) of 297 ha. After collection of soil ...
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ABSTRACTThe adoption of conservation agriculture (CA) practices are essential for soil and water conservation. In CA, farmers must adopt no-tillage (NT) with crop rotation to maintain a permanent s...
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1 CitationsSource
#1Maria de Fátima Guimarães (UEL: Universidade Estadual de Londrina)H-Index: 20
Last.João Tavares Filho (UEL: Universidade Estadual de Londrina)H-Index: 13
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#1Jean Carlo Santos de Oliveira (UEL: Universidade Estadual de Londrina)
Last.João Tavares Filho (UEL: Universidade Estadual de Londrina)H-Index: 13
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The organic carbon present in the landfill leachate (LL) can improve the physical quality of the soil when applied in agricultural areas, minimizing the problem of disposal of this waste. The objective of this work was to evaluate the effect of the application of different doses of LL on the physical quality of the Red Latosol (Oxisol) after five years of applications. The treatment consisted of applications of LL in doses of 32, 65, 98 and 130 m3 ha-1 crop-1 and the treatment that receives mine...
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#1Jaqueline Cazado Felix (UEL: Universidade Estadual de Londrina)H-Index: 1
#2Pedro Rodolfo Siqueira Vendrame (UEL: Universidade Estadual de Londrina)H-Index: 7
Last.Osmar Rodrigues Brito (UEL: Universidade Estadual de Londrina)H-Index: 8
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The objective of this work was to evaluate the use of near-infrared spectroscopy (NIRS) to predict P, C, and N forms in soils developed from basalt, using multivariate models and soil samples with different granulometries. Samples from Oxisols and Alfisols from croplands, pasture, and native vegetation areas were collected at the 0.0–0.20 and 0.60–0.80-m soil layers, and analyzed for contents of available P, remaining P, organic C, total C, and total N. Spectra in the region between 1,100 and 2,...
2 CitationsSource
#1José Francirlei de Oliveira (UEL: Universidade Estadual de Londrina)H-Index: 4
#2Michel Brossard (IRD: Institut de recherche pour le développement)H-Index: 20
Last.Maria de Fátima Guimarães (UEL: Universidade Estadual de Londrina)H-Index: 20
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ABSTRACT: In soil science, structural features of soils are an important attribute; soils can be characterised by proportional size distribution of aggregates and the pore space between and within those aggregates. The objective of this study was to evaluate the relationship between the visible and near infrared (Vis?NIR) spectra and microaggregates from a collection of Ferralsols. Our dataset consists of 56 spectra from seven soil profiles of kaolinitic and oxidic-gibbsitic Ferralsols. Soils we...
2 CitationsSource
Abstract Fertilisation using animal manure can improve soil structure. However, the positive and negative effects of this practice remain inconclusive, and manure application can change the superficial electric potential, thereby increasing the dispersible clay content, disaggregation and susceptibility of soil to erosion and contamination of surface water. The objective of this study was to evaluate a water-dispersible clay and the aggregation of an oxisol over time with the application of diff...
19 CitationsSource
#1José Francirlei de Oliveira (UEL: Universidade Estadual de Londrina)H-Index: 4
#2Michel Brossard (IRD: Institut de recherche pour le développement)H-Index: 20
Last.Maria de Fátima Guimarães (UEL: Universidade Estadual de Londrina)H-Index: 20
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The objective of this study was to evaluate the relationships between the spectra in the Vis-NIR range and the soil P concentrations obtained from the PM and Prem extraction methods as well as the effects of these relationships on the construction of models predicting P concentration in Oxisols. Soil samples' spectra and their PM and Prem extraction solutions were determined for the Vis-NIR region between 400 and 2500 nm. Mineralogy and/or organic matter content act as primary attributes allowin...
3 CitationsSource
#2Michel BrossardH-Index: 4
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