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Summarizing soil chemical variables into homogeneous management zones – case study in a specialty coffee crop. Author(s): SILVA, C. de O. F.; GREGO, C. R.; MANZIONE, R. L.; OLIVEIRA, S. R. de M.; RODRIGUES, G. C.; RODRIGUES, C. A. G.; SPERANZA, E. A.; LUCHIARI JUNIOR, A.; KOENIGKAN, L. V. In this work, 17 soil chemical variables were jointly analyzed for HMZ delineation by using indicator kriging (IK) to interpolate a soil fertility index (SFI). Repository: BDPA Publication year: 2024
Spatial variability of some biometric attributes of sugarcane plants (variety IACSP93-3046) and its relation to physical and chemical soil attributes. Author(s): GREGO, C. R.; VIEIRA, S. R.; XAVIER, M. A. Tests to evaluate competition between plants, in general do not consider the soil spatial variability, nevertheless, the uniformity rarely is present and can not be assumed without verification. The a... ... Repository: BDPA Publication year: 2010
Spatial variability of soil physical and chemical aspects in a Brazil nut tree stand in the Brazilian Amazon. Author(s): GUERREIRO, Q. L. de M.; OLIVEIRA JUNIOR, R. C. de; SANTOS, G. R. dos; RUIVO, M. de L. P.; BELDINI, T. P.; CARVALHO, E. J. M.; SILVA, K. E. da; GUEDES, M. C.; SANTOS, P. R. B. The Brazil nut is considered one of the noblest trees of the Amazon biome and contains social, ecologic and economic importance to this region. The study of the spatial variance of the edaphic propert... ... Repository: BDPA Publication year: 2017
Effect of different tillage systems on the soil chemical variables under vegetable production. Author(s): SILVA, J. da; LIMA, C. E. P.; MADEIRA, N. R.; GUEDES, I. M. R.; FONTENELLE, M. R. Repository: BDPA Publication year: 2014
Classification of soil respiration in areas of sugarcane renewal using decision tree. Author(s): FARHATE, C. V. V.; SOUZA, Z. M. de; OLIVEIRA, S. R. de M.; CARVALHO, J. L. N.; LA SCALA JÚNIOR, N.; SANTOS, A. P. G. ABSTRACT: The use of data mining is a promising alternative to predict soil respiration from correlated variables. Our objective was to build a model using variable selection and decision tree inducti... ... Repository: BDPA Publication year: 2018
Assessing degradation of soils cultivated to irrigated corn. Author(s): COELHO, A. M.; DORAN, J. W.; SCHEPERS. J. S. Repository: BDPA Publication year: 2007
Soil ecotoxicology and mesofauna at the site of an attested oil spill in Ipanema National Forest. Author(s): SCORIZA, R. N.; CORREIA, M. E. F. A disused electrical substation was the site of the spill of 40,000 L of Ascarel oil. However, none of the expected principal contaminants were chemically detected above established guidelines. Since... ... Repository: BDPA Publication year: 2018
Spatial variability of soil attributes in a cultivated area of underground dam in the State of the Paraíba, Brazil. Author(s): SILVA, M. S. L. da; NASCIMENTO, A. F. do; SILVEIRA, H. L. F. da This work aimed to assess the spatial variability of chemical and physical soil attributes of an underground dam located in Solânea county, Curimataú region, state of the Paraíba, semiarid area in nor... ... Repository: BDPA Publication year: 2019
Comparison of total nitrogen methods applied for histosols and soil horizons with high organic matter content. Author(s): PEREIRA, M. G.; ESPINDULA JÚNIOR, A.; VALLADARES, G. S.; ANJOS, L. H. C. DOS; BENITES, V. de M.; SCHULTZ, N. This study was carried out to correlate total nitrogen analyzed by two different methods: Kjeldahl (wet oxidation) and Perkin-Elmer 2.400 Series II?CHN Mode (dry oxidation or combustion) in Histosols... ... Repository: BDPA Publication year: 2006
Humic substance fractions and attributes of histosols and related high-organic-matter soils form Brazil. Author(s): VALLADARES, G. S.; PEREIRA, M. G.; ANJOS, L. H. C. dos; BENITES, V. de M.; EBELING, A. G.; MOUTA, R. de O. Knowledge of the distribution of soil organic matter (SOM) fractions is important in managing soils toward a sustainable agricultural system ina tropical environment, However, data on Histosols in lim... ... Repository: BDPA Publication year: 2007

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