Effects of land use, tillage management, and crop diversification on soil physical quality in Cerrado agricultural systems

2021 ◽  
Author(s):  
Thales Meinl Schmiedt Sattolo ◽  
Lívia Macarini Pereira ◽  
Rafael Otto ◽  
Eros Francisco ◽  
Aildson Pereira Duarte ◽  
...  
Keyword(s):  
Land Use ◽  
Crop Diversification ◽  
Agricultural Systems ◽  
Physical Quality ◽  
Soil Physical Quality ◽  
Effects Of Land Use

Effects of land use and irrigation practices on Ca, Mg, K, Na loads in rice-based agricultural systems

2014 ◽  
Vol 132 ◽  
pp. 30-36 ◽  
Author(s):  
V.D. Litskas ◽  
V.G. Aschonitis ◽  
E.H. Lekakis ◽  
V.Z. Antonopoulos
Keyword(s):  
Land Use ◽  
Agricultural Systems ◽  
Effects Of Land Use ◽  
Irrigation Practices

scholarly journals Soil Physical Quality and Relationship to Changes in Termite Community in Northwestern Colombian Amazon

2020 ◽  
Vol 8 ◽  
Author(s):  
Ervin Humprey Duran-Bautista ◽  
Yolima Muñoz Chilatra ◽  
Juan Diego Galindo ◽  
Tania Alexandra Ortiz ◽  
María Fernanda Bermúdez
Keyword(s):  
Land Use ◽  
Natural Regeneration ◽  
Soil Biology ◽  
Amazon Forest ◽  
Silvopastoral Systems ◽  
Land Uses ◽  
Physical Quality ◽  
Rubber Plantations ◽  
Soil Physical Quality ◽  
The Impact

Conversion from Amazon forest to low-management pasture or agriculture causes not only degradation of aboveground vegetation but also negative changes in soil properties and ecosystem services. This study aimed to evaluate the impact of physical soil degradation on termite community changes in three contrasting land uses (natural regeneration, rubber plantations, and silvopastoral systems). Soil physical quality was assessed through a set of physical variables, such as bulk density, porosity, soil macro-aggregation state, Visual Evaluation of Soil Structure (VESS) and penetration resistance, which were summarized in an overall synthetic indicator of physical quality. Besides, transects of 20 × 2 m were established in each land use; each transect was divided into four sections of 5 m to search and collect termites during 1 hour in each section; likewise, termites were collected from blocks of soil 25 × 25 × 10 cm (length, width, and depth, respectively) adapted from the Tropical Soil Biology and Fertility (TSBF) method. In total, 60 transects were evaluated, 20 in each land use. A total of 41 species were collected across the three land uses evaluated: natural regeneration presented 60% of the collected species (25 species), silvopastoral systems 53% (22 species), and rubber plantations 39% (16 species). Additionally, composition species from the silvopastoral, agroforestry systems, and natural regeneration were different, and a close association between these last land uses was observed. Soil physical characteristics showed significant variations between land uses. The rubber plantations presented lowest values of soil physical quality, while the natural regeneration showed high soil physical quality. These changes affected termite community and lead to changes in its composition with disproportionate loss of some species; however, there are some that can acclimate well to the decline in the soil physical quality.

scholarly journals Soil Physical Quality in Agricultural Systems on the Cerrado of Piauí State, Brazil

2018 ◽  
Vol 90 (4) ◽  
pp. 3975-3989 ◽  
Author(s):  
THIAGO R. SCHOSSLER ◽  
ROBÉLIO L. MARCHÃO ◽  
ISIS L. DOS SANTOS ◽  
DJAVAN P. SANTOS ◽  
JÚLIO CÉSAR A. NÓBREGA ◽  
...  
Keyword(s):  
Agricultural Systems ◽  
Physical Quality ◽  
Soil Physical Quality

Evaluating long-term impact of land use on selected soil physical quality indicators

Soil Research ◽  
2013 ◽  
Vol 51 (6) ◽  
pp. 471 ◽  
Author(s):  
S. T. Abu
Keyword(s):  
Land Use ◽  
Total Porosity ◽  
Continuous Cultivation ◽  
Field Capacity ◽  
Physical Quality ◽  
Soil Response ◽  
Soil Physical Quality ◽  
Pasture Grasses ◽  
Andropogon Gayanus ◽  
Long Term Impact

This paper presents findings of comparative evaluation of selected soil physical quality (SPQ) indicators, obtained from fields subjected to: >50 years of cultivation of three perennial pasture grasses (i) Digitaria smutsii (DS), (ii) Brachiaria decumbens (BD), and (iii) Andropogon gayanus (AG); (iv) >50 years of continuous cultivation (CC) of cereals–legumes; and (v) >20 years of natural fallow (NF). The study was aimed at identifying the land-use system having optimal values for SPQ. Fields under CC had the highest bulk density, and the lowest total porosity (PORt) and macroporosity (PORp), field capacity (FC), and available water capacity (AWC). Perennial pasture grasses fields had significantly higher organic carbon, PORt, FC, AWC, and saturated hydraulic conductivity, and, hence, had better SPQ than CC fields and, in some instances, NF fields. The usefulness of ratios FC/PORt = 0.66 and ACt/PORt = 0.34 as additional indicators for assessing soil response to land-use systems was not proven in this study, and therefore, further studies should be conducted on the subject matter. Pasture grasses improved SPQ values relative to continuous cereal–legume cropping and fallow. The SPQ under CC and NF fields might be best improved by applying organic matter.

scholarly journals A simplified Excel® algorithm for estimating the least limiting water range of soils

2004 ◽  
Vol 61 (6) ◽  
pp. 649-654 ◽  
Author(s):  
Tairone Paiva Leão ◽  
Alvaro Pires da Silva
Keyword(s):  
Bulk Density ◽  
Nonlinear Regression ◽  
Methodological Approach ◽  
Agricultural Systems ◽  
Numerical Techniques ◽  
Physical Quality ◽  
Soil Physical Quality ◽  
Simplified Algorithm ◽  
Least Limiting Water Range

The least limiting water range (LLWR) of soils has been employed as a methodological approach for evaluation of soil physical quality in different agricultural systems, including forestry, grasslands and major crops. However, the absence of a simplified methodology for the quantification of LLWR has hampered the popularization of its use among researchers and soil managers. Taking this into account this work has the objective of proposing and describing a simplified algorithm developed in Excel® software for quantification of the LLWR, including the calculation of the critical bulk density, at which the LLWR becomes zero. Despite the simplicity of the procedures and numerical techniques of optimization used, the nonlinear regression produced reliable results when compared to those found in the literature.

scholarly journals PHYSICAL QUALITY OF SOILS UNDER A CROP-LIVESTOCK-FOREST SYSTEM IN THE CERRADO/AMAZON TRANSITION REGION

2018 ◽  
Vol 42 (2) ◽  
Author(s):  
Guilherme Musse Moreira ◽  
Júlio César Lima Neves ◽  
Genelício Crusoé Rocha ◽  
Ciro Augusto de Souza Magalhães ◽  
Austeclinio Lopes Farias Neto ◽  
...  
Keyword(s):  
Land Use ◽  
Transition Region ◽  
Sustainable Land Use ◽  
Native Forest ◽  
Land Uses ◽  
Planted Forest ◽  
Physical Quality ◽  
Soil Physical Quality ◽  
Physical Attributes ◽  
One Year

ABSTRACT Integrated crop-livestock-forest (iCLF) systems have gained prominence in the past decades as an alternative of sustainable land use, particularly in regions in which there is pressure against agricultural expansion in protected ecosystems such as the Brazilian Amazon. In this context, the objective of this study is to evaluate the effects of one year of use of the iCLF system in the Cerrado/Amazon transition region to determine its impact on soil quality compared to other traditional land uses in the region (planted forest, crop, forage, and native forest). The results indicated that the iCLF system did not jeopardize the soil physical quality, and only the crop land use affected the soil physical attributes. The land uses with the lowest impact on the physical condition of the soil were the iCLF system and the planted forest.

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