Eucalyptus requires large amounts of nitrogen (N); however, it responds in diverse manners to the application of this nutrient. The aim of this study was to evaluate the differential performance in growth, mineral nutrition, and gas exchanges of N-fertilized Eucalyptus clones. The treatments consisted of two Eucalyptus clones (VM-01 and I-144) and six N application rates (0, 0.74, 2.93, 4.39, 5.85, and 8 mmol L-1 NH4NO3) arranged in a randomized complete block design with five replications. VM-01 had greater plant […]

The Brazilian savanna is a mosaic of phytophysiognomies influenced by edaphic and topographic factors that range from the occurrence of fires to anthropic disturbance. The goal of this study was a comparative analysis between two cerrado areas in southeastern Goiás, relating the floristic composition and structure of the vegetation to soil properties to better understand the physiognomic characteristics of the region. Twenty-five 20 × 20 m plots were used. All plants with circumference at breast height of more than 15 […]

In recent years, many researchers have claimed that world reserves of rock phosphate were getting depleted at an alarming rate, putting us on the path to scarcity of that essential resource within the next few decades. Others have claimed that such alarmist forecasts were frequent in the past and have always been proven unfounded, making it likely that the same will be true in the future. Both viewpoints are directly relevant to the level of funding devoted to research on […]

Quantification of soil physical quality (SPQ) and pore size distribution (PSD) can assist understanding of how changes in land management practices influence dynamics of soil structure, and this understanding could greatly improve the predictability of soil physical behavior and crop yield. The objectives of this study were to measure the SPQ index under two different land management practices (the continuous arable cropping system and natural bush fallow system), and contrast the effects of these practices on the structure of PSD […]

Ethnopedological knowledge has provided important information about the way of life of rural people and their traditions, like the craft of making pieces of pottery from suitable soils. The objective of this study was to evaluate the physical, chemical, and mineralogical properties of Planosols and Gleysols used in the production of handcrafted pottery artifacts in the State of Minas Gerais, Brazil. In the clay pits, two profiles of Planosol soil (P1 and P2) and one of Gleysol soil (P3) used […]

Air permeability may be used as a soil physical quality indicator. The objective of this study was to determine the air permeability and pore continuity index for the seedbed of an Oxisol cultivated under a no-tillage system that underwent mechanical chiseling and biological promotion of pore formation using the forage radish crop. The study was carried out in an experimental area of the Universidade Estadual de Ponta Grossa (Ponta Grossa State University), Parana, Brazil. The treatments were 18 consecutive years […]

The difficulty in finding recent information on the spatial behavior of properties of soils in the Brazilian Amazon region has been a concern of many researchers. Due to the great difficulty and costs in assessing soil properties, alternative methods have been used for prediction, such as magnetic susceptibility. Thus, the objective of this study was to evaluate the spatial variability of magnetic susceptibility and of physical and chemical soil properties in an Argissolo Vermelho (Ultisol) from native forest, Archaeological Black […]

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 […]

The use of rock phosphates, combined with proper management of soil microorganisms able to solubilize phosphate, is an alternative for reducing the costs of P fertilization. However, both practices require prior assessment of the potential of the rhizospheric microbiota in solubilizing P sources with low reactivity under field conditions. The objective of this study was to evaluate the potential of soil microbes to solubilize Ca, Fe, and Al phosphates, as well as Araxá and Catalão rock phosphates, in rhizospheric and […]

Management of forage grazing height by cattle may compromise soil physical properties. The objective of this study was to evaluate the influence of grazing height of brachiaria (Urochloa ruziziensis) and the average stocking rate, after three years into an integrated soybean crop-livestock system, in the physical attributes of a Haplorthox (Rhodic Ferralsol). A randomized complete block experimental design with three replications was used. Five treatments were evaluated in 1 ha experimental plots: grazing heights of 10, 20, 30, and 40 […]