scholarly journals Structural quality of a no-tillage red latosol 50 months after gypsum aplication

2012 ◽  
Vol 36 (3) ◽  
pp. 1005-1014 ◽  
Author(s):  
Marcelo Marques Lopes Müller ◽  
Cassio Antônio Tormena ◽  
Aline Marques Genú ◽  
Luiz Fernando Machado Kramer ◽  
Leandro Michalovicz ◽  
...  
Keyword(s):  
Soil Quality ◽  
Soil Structure ◽  
Penetration Resistance ◽  
Structural Quality ◽  
No Tillage ◽  
Visual Evaluation ◽  
Soil Penetration Resistance ◽  
Red Latosol ◽  
Gypsum Application

Gypsum application may enhance the soil quality for plants in terms of soil chemical and physical properties. The objective of this study was to evaluate the effects of gypsum application on the structural quality of a no-tillage Red Latosol. The experiment was initiated in September 2005 in Guarapuava-PR, with gypsum applications of 0; 4; 8; and 12 Mg ha-1 on the soil surface. In November 2009, two soil blocks were sampled from the 0-0.3 m layer for visual evaluation of the soil structure quality (Sq) and to determine the aggregate-tensile strength (ATS). Soil penetration resistance (PR) and gravimetric moisture (H%) of the 0-0.300 m layer were evaluated, and soil cores were collected (layers 0.000-0.075 and 0.075-0.150 m), to determine soil bulk density (BD), total soil porosity (TP), microporosity (Mi), and macroporosity (Ma). Data were subjected to analysis of regression at 5 %. No significant effects of gypsum application on ATS and H % of aggregates were observed, but for Sq, a quadratic effect (0.000-0.075 m) and linear increase (0.075-0.150 and 0.150-0.300 m) were stated, indicating soil quality decrease, although Sq remained mostly below 3.0, with good to intermediate soil quality. Soil PR increased with gypsum, but also remained below critical levels. No effect was observed for soil H % at the moment of PR determination on the field. The gypsum applications decreased BD in the 0.075-0.150 m layer, and increased PT and Ma, while in 0.000-0.075 m some Ma was converted to Mi, without affecting PT and BD. These last results indicate a gain in soil structural quality by gypsum applications, but the higher scores of soil structure and values of soil penetration resistance, though still below thresholds, should be monitored to prevent limitations to soil use in the future.

scholarly journals Visual Evaluation of Soil Structural and Sugarcane Root Under Deep Strip-till and Conventional Tillage

2018 ◽  
Vol 10 (11) ◽  
pp. 231
Author(s):  
Camila Cassante de Lima ◽  
Isabella Clerici De Maria ◽  
Wellingthon da Silva Guimarães Júnnyor ◽  
Laura Fernanda Simões da Silva ◽  
Raffaella Rossetto
Keyword(s):  
Soil Quality ◽  
Soil Structure ◽  
Agricultural Soils ◽  
Conventional Tillage ◽  
Soil Tillage ◽  
Structural Quality ◽  
Visual Evaluation ◽  
Growth Scores ◽  
Agricultural Machines

The Visual Evaluation of Soil Structure (VESS) is a relatively simple methodology used for comparing management systems and for maintaining or recovering the quality of agricultural soils. The objective of this study was to evaluate the structural soil quality in the production of sugarcane using VESS. Three treatments were established: Deep Strip-till (DST), Conventional Tillage (CT) and Uncultivated area (UC). For DST and CT soil samples were taken from two locations: in-row and inter-row. Soil blocks were extracted from mini-trenches and carefully fragmented into aggregates, whose appearance, resistance, and characteristics of the structural units define quality scores. The density of visible roots was quantified by a grid-based counting method. DST at in-row location had improved the structural quality of the soil, providing greater root growth. Scores of visual soil quality in CT showed no difference between in-row and inter-row locations. Preserved from machinery traffic the in-row trail in CT did not result in benefit to soil quality. Variability in the scores among the replicate blocks for DST in-row suggests that the equipment had produced irregular soil tillage. VESS proved to be a good indicator from which it is feasible to evaluate impacts of agricultural machines and tillage implements on soil quality.

scholarly journals Chemical and physical-hydric characterisation of a red latosol after five years of management during the summer between-crop season

2014 ◽  
Vol 38 (5) ◽  
pp. 1576-1586 ◽  
Author(s):  
José Fausto Guimarães Silva ◽  
Eduardo da Costa Severiano ◽  
Kátia Aparecida de Pinho Costa ◽  
Vinícius de Melo Benites ◽  
Wellingthon da Silva Guimarães Júnnyor ◽  
...  
Keyword(s):  
Cover Crop ◽  
Soil Structure ◽  
Production Systems ◽  
Chemical Properties ◽  
Agricultural Activity ◽  
Adjacent Area ◽  
No Tillage ◽  
Crop Season ◽  
Structural Improvement ◽  
Red Latosol

Agricultural production systems that include the production of mulch for no-tillage farming and structural improvement of the soil can be considered key measures for agricultural activity in the Cerrado region without causing environmental degradation. In this respect, our work aimed to evaluate the chemical and physical-hydric properties of a dystrophic Red Latosol (Oxisol) in the municipality of Rio Verde, Goias, Brazil, under different soil management systems in the between-crop season of soybean cultivation five years after first planting. The following conditions were evaluated: Brachiaria brizantha cv. Marandu as a cover crop during the between-crop season; Second crop of maize intercropped with Brachiaria ruziziensis; Second crop of grain alone in a no-tillage system; Fallow soil after the soybean harvest; and Forest (natural vegetation) located in an adjacent area. Soil samples up to a depth of 40 cm were taken and used in the assessment of chemical properties and soil structure diagnostics. The results demonstrated that the conversion of native vegetation areas into agricultural fields altered the chemical and physical-hydric properties of the soil at all the depths evaluated, especially up to 10 cm, due to the activity of root systems in the soil structure. Cultivation of B. brizantha as a cover crop during the summer between-crop season increased soil water availability, which is important for agricultural activities in the region under study.

scholarly journals USE OF S-INDEX AS A STRUCTURAL QUALITY INDICATOR FOR COMPACTED LATOSOLS CULTIVATED WITH MAIZE

2018 ◽  
Vol 31 (2) ◽  
pp. 455-465 ◽  
Author(s):  
KARINA DE VARES ROSSETTI ◽  
JOSÉ FREDERICO CENTURION
Keyword(s):  
Block Design ◽  
Conventional Tillage ◽  
Water Retention Curve ◽  
Structural Quality ◽  
Retention Curve ◽  
Soil Layers ◽  
Randomized Block Design ◽  
Physical Attributes ◽  
Red Latosol

ABSTRACT One way to prevent soil degradation is to monitor its structural quality through physical attributes and indicators. Thus, the objective of this work was to identify parameters that can be used together with the S-index to assess the soil structural quality of Latosols-Distrophic Red Latosol (DRL) and Eutroferric Red Latosol (ERL)-cultivated with maize after traffic-induced compaction by agricultural machinery. The experiment was conducted in a randomized block design in split-plots, with five treatments and four replications for each soil class. The treatments were: T0 = conventional tillage without additional compaction; T1, T2 and T3 = one pass of a 4, 7 and 10-Mg tractor, respectively; T4 = three passes of a 10-Mg tractor. The water retention curve, density, porosity and S-index of the soil layers 0-0.1, 0.1-0.2 and 0.2-0.3 m were evaluated. The DRL presented similar S-index (0.035 to 0.037) in the T0, T1 and T2, and these S-index were connected to soil macroporosity. Most S-index of the ERL were above 0.035, except for T4 due to its higher soil density. The S-index can be used as a complementary parameter for maize height and soil macroporosity to evaluate the structural quality of DRL.

scholarly journals Structural quality of soils cultivated with coffee and pasture in an environmental protection area

2010 ◽  
Vol 34 (3) ◽  
pp. 709-716 ◽  
Author(s):  
Vico Mendes Pereira Lima ◽  
Ciro Augusto de Souza Magalhães ◽  
Geraldo César de Oliveira ◽  
José Maria de Lima
Keyword(s):  
Environmental Protection ◽  
Environmental Sustainability ◽  
Structural Quality ◽  
Uniaxial Compression Test ◽  
Soil Resistance ◽  
Environmental Protection Area ◽  
Protection Area ◽  
Red Latosol ◽  
Resistance To Penetration

Studies of soils in Environmental Protection Areas (EPAs) are of great importance, because they are an essential component of ecosystems, directly interfering in environmental sustainability. The objective of this study was to evaluate the structural quality of soil cultivated with coffee and used as pasture in the Capituva's River microbasin, which is located in the Environmental Protection Area in Coqueiral, south of the state of Minas Gerais. Uniaxial compression test (preconsolidation test) and soil resistance to penetration were used. Undisturbed samples were taken from the surface layer (0-5 cm) of the soils in the area: a typic dystrophic Red Latosol (LVd - Oxisol), a typic eutrophic Red Argisol (PVe - Ultisol), and a typic dystrophic Haplic Cambisol (CXbd - Inceptisol). A significant linear positive correlation was observed between the results of the preconsolidation test and soil resistance to penetration. Load bearing capacity of soil could be estimated accordingly by means of penetration resistance for LVd, PVe, and CXbd. Cambisol - CXbd showed lower loading support capacity and resistance to penetration than LVd and PVe, due to the better crop management in this soil that resulted in higher physical quality which accounts for higher production and environmental sustainability.

Persistent improvements in the structure and hydraulic conductivity of a Ferrosol due to liming

Soil Research ◽  
2007 ◽  
Vol 45 (3) ◽  
pp. 218 ◽  
Author(s):  
J. M. Kirkham ◽  
B. A. Rowe ◽  
R. B. Doyle
Keyword(s):  
Hydraulic Conductivity ◽  
Organic Carbon ◽  
Soil Structure ◽  
Aggregate Stability ◽  
Aggregate Size ◽  
Soil Surface ◽  
Penetration Resistance ◽  
Organic C ◽  
Soil Penetration Resistance ◽  
Wet Aggregate Stability

Changes in the soil structure and hydraulic conductivity of an Acidic Red Ferrosol were measured in a long-term (1968–2003) fertiliser experiment on pasture in north-western Tasmania, Australia. Studies were initiated following observations of both softer soil surface and cracking on plots that had received 15 t/ha of ground agricultural limestone. Liming decreased penetration resistance and increased hydraulic conductivity. These structural improvements were associated with increased mean dry aggregate size, a small increase in wet aggregate stability, higher exchangeable calcium levels, and increased plant growth, but a 9% decrease in total soil organic carbon in the surface 50 mm. This decrease in organic carbon was not associated with deterioration in soil structure, as may have been anticipated. This was probably because total organic C was still 82 g/kg on unlimed plots. Decreases in soil penetration resistance due to liming increased the likelihood of pugging from livestock but may improve ease of tillage. This research demonstrates that liming can improve the structure of a well-aggregated Ferrosol as well as its previously reported effects of increasing soil pH and yields of pasture and barley despite decreasing organic C.

scholarly journals Kualitas Struktur Tanah di Setiap Bentuklahan di DAS Kaliwungu

2020 ◽  
Vol 33 (2) ◽  
Author(s):  
Adhera Sukmawijaya ◽  
Junun Sartohadi
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Soil Profile ◽  
Soil Structure ◽  
Soil Layer ◽  
Soil Management ◽  
Visual Evaluation ◽  
Structure Quality ◽  
Sustainable Soil Management ◽  
Aerial Vehicle

Pengelolaan tanah untuk pertanian yang berkelanjutan perlu untuk memeperhatikan 2 hal, yaitu bentuklahan dan tanah. Faktor tanah yang perlu diperhatikan adalah struktur tanah. Penelitian yang fokus pada bentuklahan, struktur tanah, dan implikasinya pada pengelolan belum pernah dilakukan di DAS Kaliwungu. Penelitian bertujuan untuk menganalisis struktur tanah pada setiap bentuklahan sebagai dasar untuk pengelolaan tanah yang berkelanjutan. Kualitas struktur tanah ditentukan dari observasi profil tanah pada setiap bentuklahan. Identifikasi bentuklahan dilakukan berdasarkan pengumpulan data dari Kendaraan Nirawak. Viusal Evaluation of Subsoil Strucutre (SubVESS) digunakan untuk menentukan kualitas struktur tanah berdasarkan karakteristik struktur tanah. Hasil menunjukkan bahwa area penelitian memiliki kualitas struktur tanah yang baik dengan mayoritas nilai kualitas strutktur tanah yang berkisan antara Ssq 1-3. Tidak diperlukan adanya perubahan dalam pengelolaan tanah pada area kajian.Soil management for sustainable agriculture needs to focus on 2 things, which are landform and soil. Soil factor that needs to be focused on is soil structure. The study that focused on landform, soil structure and its implication on soil management has never been done in Kaliwungu Watershed. This research aims to analyze soil structure on every landform as the basis to determine sustainable soil management. Soil structure quality was determine by soil profile observation on every landform. Unmanned Aerial Vehicle (UAV) photographic data was used to identify each landform. Visual Evaluation of Subsoil Structure (SubVESS) was used to identify the quality of soil structure based on its characteristic. The result shows that study area has a good soil structure quality with the majority of soil layer has a good soil structure quality (Ssq 1-3). There is no need to change in soil management is needed.

scholarly journals Soybean Yield, Soil Porosity and Soil Penetration Resistance under Mechanical Scarification in No-Tillage System

2018 ◽  
Vol 10 (4) ◽  
pp. 268 ◽  
Author(s):  
Edleusa Pereira Seidel ◽  
Ana Paula Heck Schneider ◽  
Monica Carolina Sustakowski ◽  
Lucas Murakami Matté ◽  
Marcos Cesar Mottin ◽  
...  
Keyword(s):  
Cover Crops ◽  
Management Practices ◽  
Technological Development ◽  
Block Design ◽  
Penetration Resistance ◽  
Steady Increase ◽  
No Tillage ◽  
Soybean Production ◽  
Soil Penetration Resistance ◽  
Tillage System

Technological development has triggered a steady increase in Brazilian agricultural production, but also brought problems due to the excessive land use. The lack of care with proper management practices has led to soil physical degradation, mainly the formation of impermeable layers, which can lead to a reverse effect, a reduction in crop yield. It can be potentiated in silage production and with the lack of cover crops. To minimize the negative impacts of soil compaction, scarification is recommended, but its effectiveness has been questioned in no-tillage system. Thus, an experimental field was implemented in Brazil in 2015-2016 season, to evaluate the mechanical scarification on soybean production in succession to silage and grain corn intercropped with Brachiaria (Urochloa ruziziensis) as well as the physical properties of the soil. The experimental layout was a complete randomized block design with four replications. The plots were composed of second crop maize (autumn) intercropped with brachiaria, in two systems: silage and dry grains. The subplots were composed of three management system: no-tillage, reduced tillage cultivation with Terrus scarifier and Fox scarifier. Corn harvesting systems as well the scarifiers use did not affect soybean production and its yield components. The use of scarifiers reduced soil coverage, plant population, and soil penetration resistance. The data suggest that there was no persistence in the benefits presented by scarification. Soybean was able to break through the compacted layers, even above the critical level, corroborating with the hypothesis that the use of scarifiers does not bring benefits in no-tillage system.

scholarly journals Characterization of soil structure and porosity under long-term conventional tillage and no-tillage systems

2009 ◽  
Vol 33 (6) ◽  
pp. 1837-1844 ◽  
Author(s):  
João Tavares Filho ◽  
Daniel Tessier
Keyword(s):  
Bulk Density ◽  
Management System ◽  
Soil Structure ◽  
Pore Diameter ◽  
Conventional Tillage ◽  
Water Retention Curve ◽  
No Tillage ◽  
Sample Collection ◽  
Red Latosol ◽  
Physical And Chemical

Different management systems tend to modify soil structure and porosity over the years. The aim of this study was to study modifications in the morphostructure and porosity of dystroferric Red Latosol (Oxisol) under conventional tillage and no-tillage over a 31- year period. The study began with the description of soil profiles based on the cropping profile method, to identify the most compact structures, define sample collection points for physical and chemical analysis, and determine the water retention curve. A forest soil profile was described and used as reference. The results showed that, under conventional tillage, the microaggregate structure of the Oxisol was fragmented between 0 and 0.20 m, and compact (bulk density = 1.52 Mg m-3) in the sub-surface layer between 0.20 and 0.50 m. Under no-tillage, the structure became compacted (bulk density = 1.40 Mg m-3) between 0 and 0.60 m, but contained fissures and biopores. The volume of the class with a pore diameter of > 100 µm under no-tillage was limited, but practically non-existent in the conventional management system. On the other hand, the classes with a pore diameter of < 100 µm were not affected by the type of soil management system.

scholarly journals The Effect of Land Management Practices on Soil Quality Indicators in Crete

2021 ◽  
Vol 13 (15) ◽  
pp. 8619
Author(s):  
Orestis Kairis ◽  
Chrysoula Aratzioglou ◽  
Athanasios Filis ◽  
Michel van Mol ◽  
Costas Kosmas
Keyword(s):  
Organic Carbon ◽  
Soil Quality ◽  
Quality Indicators ◽  
Soil Structure ◽  
Management Practices ◽  
Aggregate Stability ◽  
Infiltration Rate ◽  
No Tillage ◽  
Exchangeable Potassium ◽  
Soil Quality Indicators

The effects of four main practices tillage versus no-tillage, and intensive grazing versus extensive grazing, applied in characteristic agricultural and grazing lands of Crete Island were evaluated in situ using nine soil quality indicators. The following nine representative indicators of soil quality assessment were assessed using the rapid visual assessment methodology adopted at European level in the context of the EU research project iSQAPER: susceptibility to water and wind erosion, surface ponding (under cropping), formation of tillage pan, soil color, soil porosity, soil structure, susceptibility to slaking, infiltration rate, and biodiversity status. These indicators were measured in 48 agricultural field-plots to adequately represent the four above-mentioned practices and the different types of geomorphological patterns existing in the area. Additionally, 38 agricultural fields were sampled in the topsoil to assess cultivation practices (tillage, no-tillage) on soil organic carbon, cation exchange capacity, exchangeable potassium, available phosphorous, and soil aggregate stability. Based on the indicators rating methodology, the appropriate statistical tests were applied and the soils under different managements were characterized in terms of their potential quality and their general agricultural value. The obtained data showed that in agricultural areas, significant differences were detected between tillage and no-tillage management practices for the indicators of soil structure and consistency and infiltration rate. In grazing land, significant differences were found for the soil quality indicators of susceptibility to erosion and infiltration rate for the corresponding practices of intensive and extensive grazing. Organic carbon content, exchangeable potassium content and aggregate stability were greatly affected in tillage versus no-tillage management practices.

Visual evaluation of soil structure in organic smallholder farms in the eastern Amazon: A useful tool to assess soil quality

2021 ◽  
Author(s):  
Isabela Mello da Silva ◽  
Sueli Rodrigues ◽  
Herdjania Verasde Lima ◽  
Hermano Melo Queiroz ◽  
Gustavo Pereira Valani ◽  
...  
Keyword(s):  
Soil Quality ◽  
Soil Structure ◽  
Visual Evaluation ◽  
Smallholder Farms
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