ABSTRACT Integration of systems with pastures, using silvopastoral systems, can increase soil carbon levels, optimize land use, improve the quality and productivity of agricultural products, and promote the conservation of environmental resources. This study aimed to evaluate the influence of management practices of marandu grass at eucalyptus shading levels in a silvopastoral systems, on organic carbon and nitrogen stocks, and soil chemical properties in the Brazilian Cerrado. Environments with different light availability in the plots (SPS 55-60, SPS 50-55, SPS […]

ABSTRACT Adopting land-uses that contribute with a considerable litter input can affect the accumulation, protection, and bioavailability of organic carbon in the edaphic environment, compromising the different compartments of soil organic matter (SOM) and the associated benefits. Moreover, changes in seasons can influence the dynamic of SOM. Notably, the mechanisms involved in SOM stabilization and storage, particularly in agroforestry production areas, are still poorly explored. This study aimed to verify if the contents of soil organic carbon (SOC) and the […]

Assessing the quality of agricultural soils is important for defining and adopting management practices that ensure socioeconomic and environmental sustainability. The methods for indexation of quality indicators called the Integrated Quality Index (IQI) and the Nemoro Quality Index (NQI) were used in this study to evaluate soil quality in experimental plots planted to eucalyptus. The selection of these indicators was made based on nine soil quality indicators: geometric mean diameter, water permeability, organic matter, macro- and microporosity, total porosity, bulk […]

Nitrogen is required in large amounts by plants and their dinamics in corn and perennial forages intercropped is little known. This study analyzed the efficiency of nitrogen fertilization (15NH4NO3) applied after corn grain harvest to palisadegrass (Brachiaria brizantha cv. Marandu) in intercrops sown at two times, as well as the N residual effect on the subsequent corn crop. The field experiment was performed in Botucatu, São Paulo State, in southeastern Brazil, on a structured Alfisol under no-tillage. The experiment was […]

The species of the Eucalyptus genus are the most cultivated in the world and have become a solution for reducing the pressure on native forests. The aim of this study was to evaluate the dry biomass and its distribution in the different compartments of the trees (leaves, branches, bark, wood and roots), and assess their macronutrient content and nutrient balance in the soil-plant system in a Eucalyptus urophylla x E. grandis plantation at 60 months of age on the Água […]

Weed management is considered one of the activities that degrade the soil structure most in coffee crops, due to the soil compaction caused by weed control operations. The objective of this study was to determine the bearing capacity models for no weed control and to use this model to determine which weed management causes smaller or greater soil compaction. The study was conducted on a Red-Yellow Latosol (LVA), under coffee (variety Topazio MG 1190), on the Experimental Farm of EPAMIG […]

As conflicts related to the water use in Brazil are increasing, the implementation of policies that can mitigate these problems has become crucial. In this context, the concept of Payment for Environmental Services (PES) has been widely accepted and applied around the world and also in Brazil. The municipality of Extrema, in the State of Minas Gerais, was the first in Brazil to implement a PES program, known as “Conservador das Águas”. This study aimed to evaluate soil losses in […]

The negative impacts of the increasing volume of wastewater and of its discharge into the environment have become a worldwide concern. This study assessed the potential impacts of using treated effluent from pig raising for cotton irrigation, to evaluate their effects on soil chemical properties, and compare the results with those under conventional management. The experiment was conducted in an experimental area of the Company for the Development of the San Francisco and Parnaíba valleys “Perímetro Irrigado Formoso”, in Bom […]

To synchronize nutrient availability with the requirements of eucalyptus during a cultivation cycle, the nutrient flow of this system must be well understood. Essential, for example, is information about nutrient dynamics in eucalyptus plantations throughout a cultivation cycle, as well as impacts on soil nutrient reserves caused by the accumulation and subsequent export of nutrients via biomass. It is also important to quantify the effect of some management practices, such as tree population density (PD) on these fluxes. Some nutrient […]

In view of the different managements used in coffee production, this study aimed to quantify the changes of some physical properties of an Oxisol under four-year-old coffee, in southern Minas Gerais. Three management systems were compared to native forest. The following management systems were evaluated: mechanized coffee production (CCM), coffee without mechanization (CSM), dense coffee plantation (CA) and native forest (MN) as reference. Undisturbed samples were collected with an Uhland sampler and aluminum rings (diameter 6.35 cm, height 2.54 cm), […]