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Termite Mounds Effects on Soil Properties in the Atlantic Forest Biome

Sandra Santana de Lima, Marcos Gervasio Pereira, Renato Nunes Pereira, Rafael Moura de Pontes, Celeste Queiroz Rossi


ABSTRACT Termites have peculiar activities in the soil, inducing significant changes in the soil properties. The objective of this study was to assess physical and chemical properties and soil organic matter to evaluate the effect of termite activity and termite mounds on the soil. Two toposequences were selected and divided in slope thirds (shoulder, backslope, and footslope). In each of these, four termite mounds were selected. Samples were taken from the soils and termite mounds (top, center, and base) along […]

Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen

Bruno Boscov Braos, Manoel Evaristo Ferreira, Mara Cristina Pessôa da Cruz, Lucas Boscov Braos, José Carlos Barbosa


ABSTRACT The use of chemical methods to assess the soil organic nitrogen (N) potentially available to plants is not a common practice in Brazil. However, associated with others, this tool might improve efficiency in the use of waste and nitrogen fertilizers. In our study, chemical methods were tested to assess potentially available soil N in samples of 17 representative soils of the western plateau of the state of São Paulo (10 Oxisols and 7 Ultisols). Available soil N was extracted […]

Liquid Bovine Biofertilizer and Cultivation Effects on the Porosity of a Typic Haplocambids as a Function of Cultivation and Dose

Thiago Leite de Alencar, Arilene Franklin Chaves, Alcione Guimarães Freire, Raimundo Nonato de Assis, Jaedson Cláudio Anunciato Mota


ABSTRACT The soil porous space is where processes related to gases and soil solution occur, and provides an adequate guide for agricultural practices. This study aimed to evaluate the integrated effects of cultivation and the application of liquid bovine biofertilizer on the porous network of a Typic Haplocambids (Cambissolo Háplico Ta Eutrófico) cultivated with figs (Ficus carica L.). Four treatments were evaluated (under fig cultivation with the application of 20, 40 and 60 % of biofertilizer through irrigation, a control […]

Contrasts in Areas of Rubber Tree Clones in Regard to Soil and Biomass Carbon Stocks

Anderson Ribeiro Diniz, Marcos Gervasio Pereira, Fabiano de Carvalho Balieiro, Eduardo Vinicius da Silva, Felipe Martini Santos, Francy Junio Gonçalves Lisboa, [...]


ABSTRACT Rubber tree (Hevea brasiliensis) crop may accumulate significant amounts of carbon either in biomass or in the soil. However, a comprehensive understanding of the potential of the C stock among different rubber tree clones is still distant, since clones are typically developed to exhibit other traits, such as better yield and disease tolerance. Thus, the aim of this study was to address differences among different areas planted to rubber clones. We hypothesized that different rubber tree clones, developed to […]

Physical Properties of a Cultivated Cambisol Treated with Biofertilizer in the Apodi Plateau, Ceará, Brazil

Thiago Leite de Alencar, Arilene Franklin Chaves, Carlos Levi Anastácio dos Santos, Raimundo Nonato de Assis, Jaedson Cláudio Anunciato Mota


Knowledge of soil physical changes and soil quality is important for creating adequate management strategies to be adopted for soil under crop production. The aim of this study was to evaluate the effects of cultivation and application of biofertilizer (obtained from cattle manure) on the physical quality of a Cambisol planted to Ficus carica L. with a drip irrigation system and to verify the efficiency of indicators in assessing changes in its physical properties. In order to evaluate physical quality, […]

Soil Properties and Carbon Accumulation in an Integrated Crop-Livestock System Under No-Tillage

Nídia Raquel Costa, Marcelo Andreotti, Keny Samejima Mascarenhas Lopes, Kazuo Leonardo Yokobatake, João Paulo Ferreira, Cristiano Magalhães Pariz, [...]


In production systems such as the integrated crop-livestock system (ICL) under no-tillage, improvements have been observed in chemical, physical, and biological soil properties. Therefore, we aimed to evaluate the changes in chemical and physical soil properties, as well as carbon (C) accumulation, in an Oxisol under irrigated conditions in the Cerrado (Brazilian tropical savanna) in an ICL system under no-tillage. The experiment was carried during the growing of 2010/2011, 2011/2012, and 2012/2013. A randomized block experimental design with four replications […]