scholarly journals Impacts of land-use and management systems on organic carbon and water-physical properties of a Latossolo Amarelo (Oxisol)

2017 ◽  
Vol 38 (1) ◽  
pp. 109 ◽  
Author(s):  
Rodrigo Fonseca da Silva ◽  
Glenio Guimarães Santos ◽  
Júlio César Azevedo Nóbrega ◽  
Geraldo César de Oliveira ◽  
Bruno De Oliveira Dias ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Physical Properties ◽  
Carbon Content ◽  
Weather Conditions ◽  
Conventional Tillage ◽  
Management Systems ◽  
Organic Carbon Content ◽  
Eucalyptus Plantation ◽  
No Till

The Cerrado biome has outstanding territorial relevance in the state of Piauí, in which weather conditions, relief and favorable soil has made this region one reference in food production. This study focused to evaluate the effects of different land uses, management systems and their respective terms on organic carbon content and physical properties of a Latossolo Amarelo (Oxisol) in the Southwestern Piauí state. The study was performed in the city of Uruçuí, situated in the southwestern Piauí state. We assessed nine farming areas with different backgrounds regarding land-use, management system and run time. The treatments consisted of areas under no-till for 3 and 6 years (NT3 and NT6), under pasture for 2 and 5 years (PA2 and PA6), under eucalyptus plantation for six and twelve years (EU6 and EU12), under conventional tillage for two and 8 years (CT2 and CT8) and under native Cerrado (NC), which represented a reference condition. Conversion of the native Cerrado into no-till and grazing areas increased soil organic carbon content over time.

Land use and organic carbon content of some subtropical soils

1986 ◽  
Vol 96 (2) ◽  
pp. 185-196 ◽  
Author(s):  
Ariel E. Lugo ◽  
Mary Jeane Sanchez ◽  
Sandra Brown
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Carbon Content ◽  
Organic Carbon Content ◽  
Subtropical Soils

scholarly journals Physical fractionation of organic carbon in areas under different land uses in the Cerrado

2020 ◽  
Vol 24 (8) ◽  
pp. 534-540
Author(s):  
Adilson A. Costa ◽  
Bruno de O. Dias ◽  
Vânia da S. Fraga ◽  
Charles C. Santana ◽  
Thalita F. Sampaio ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Agricultural Production ◽  
Conventional Tillage ◽  
Land Uses ◽  
Eucalyptus Plantation ◽  
Cerrado Vegetation ◽  
Physical Fractionation ◽  
C Stocks ◽  
Positive Effect

ABSTRACT With the expansion of agricultural production, native Cerrado areas are replaced with other forms of land use. Thus, the objective of this study was to evaluate changes in the physical fractionation of organic carbon (C) in areas under different forms of land use in the Cerrado. The treatments, with five repetitions, corresponded to the following forms of use: area under conventional tillage, area under pasture plantation, area under eucalyptus plantation and area under native Cerrado vegetation, at the depths of 0-5, 5-10, 10-15 and 15-20 cm in the municipality of Luis Eduardo Magalhães, BA, Brazil. The highest C contents and stocks were found in the eucalyptus area, which were equal to those of the area under native Cerrado vegetation, while particulate C stocks were higher in the area under pasture at the depth up to 10 cm, not differing from the area under native Cerrado. Pasture and eucalyptus had positive effect on C management index, regardless of depth.

scholarly journals Soil Physical Attributes and Organic Carbon in a Cohesive Yellow Latosol (Oxisol) Under Different Soil Management Systems in the Coastal Plains of Bahia, Brazil

2018 ◽  
Vol 10 (6) ◽  
pp. 272
Author(s):  
Fagner Taiano Dos Santos Silva ◽  
Fabiane Pereira Machado Dias ◽  
Poliana Dos Santos de Farias ◽  
Flávia Melo Moreira ◽  
Ludmila De Oliveira De Amorim ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Content ◽  
Soil Layer ◽  
Soil Management ◽  
Liquid Limit ◽  
Management Systems ◽  
Native Forest ◽  
Organic Carbon Content ◽  
Coastal Plains ◽  
Physical Attributes

Although soil physical attributes are determining factors of soil quality and for root development of crops, they are often neglected when dealing with soil management, which refers only to fertility. The objective of this work was to evaluate soil physical characteristics, organic carbon content and carbon stock levels in yellow Latosol cohesive distrophic coastal plains of Bahia, Brazil, where different soil management systems were implemented. Soil texture, water dispersible clay, flocculation index, soil density and porosity, liquid limit, plastic limit, plasticity index, stability of aggregates, organic carbon content and resistance to penetration were evaluated from soil samples collected in the 40 cm-top soil. The different soil plot covers consisted of (i) Eucalyptus with grasses (EGR), (ii) Eucalyptus with spontaneous vegetation (EVE), (iii) fallow (POU), (iv) pasture (PAS), and (v) native forest (MN). It was found that EVE and MN contributed to greater stability of larger aggregates in the 20-40 cm-soil layer compared to EGR, PAS and POU. The high organic matter contents of soils of the cultivated plots (EVE and EGR) increased the limits of consistency. Soil management systems with Eucalyptus and pasture contributed to accelerate the oxidation process and the loss of C.

Effect of Tillage Systems on Distribution of Aggregates and Organic Carbon in a Long-Term No-Tillage Paddy Field

2011 ◽  
Vol 183-185 ◽  
pp. 1185-1189
Author(s):  
Qi Wen Tang ◽  
Chang Sheng Jiang ◽  
Qing Ju Hao ◽  
Yan Wu
Keyword(s):  
Organic Carbon ◽  
Soil Layer ◽  
Bottom Layer ◽  
Conventional Tillage ◽  
Organic Carbon Content ◽  
Diameter Class ◽  
Tillage Systems ◽  
No Till ◽  
Long Term Experiment

The effect of different tillage systems on the size distribution of aggregates and organic carbon distribution and storage in different size aggregates in a Hydragric Anthrosol were studied in a long-term experiment in Chongqing, China. The experiment included five tillage treatments, which are conventional tillage with rice only system (DP), conventional tillage with rotation of rice and rape system (SH), no-till and ridge culture with rotation of rice and rape system (LM), no-till and plain culture with rotation of rice and rape system (XM) and tillage and ridge culture with rotation of rice and rape system (LF), respectively. The results showed that the aggregates 0.25-0.05 mm in diameter accounted for the largest proportion in each soil layer under all treatments. The organic carbon mainly exist in aggregates in the 0.25-2 mm and 0.05-0.25 mm diameter in the plough layer, which mainly exist in the 0.25-2 mm in diameter in the bottom layer. Distribution of organic carbon in aggregates in the 0.05-0.25 mm diameter class was highest, followed by the aggregates in the 0.25-2mm diameter class. The organic carbon in aggregates under different tillage systems was in a decreasing order of LM (21.05 g·kg-1)> DP (14.13 g·kg-1)> XM (13.29 g·kg-1)> LF (12.54 g·kg-1) > SH (11.41 g·kg-1). The total organic carbon content showed a significant correlation with the amount of aggregates with diameter >0.005 mm. The results showed that the accumulation of soil organic carbon was mainly affected by aggregates in the >0.005mm diameter class.

scholarly journals The Impacts of Vineyard Afforestation on Soil Properties, Water Repellency and Near-Saturated Infiltration in the Little Carpathians Mountains

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2550
Author(s):  
Andrej Hrabovský ◽  
Pavel Dlapa ◽  
Artemi Cerdà ◽  
Jozef Kollár
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Properties ◽  
Carbon Content ◽  
Water Repellency ◽  
Infiltration Rate ◽  
Organic Carbon Content ◽  
Soil Water Repellency ◽  
Infiltration Process ◽  
Vineyard Soils

Vineyards are a 7000-year-old land-use tradition and both management and abandonment have result in altered soil properties. These have a great effect on water resources and soil services, and this inspired our investigation into the effects of land-use and land-use change on soils in the Modra wine-growing region in South-western Slovakia. Ten topsoil samples were taken at each of the seven research sites (n = 70) on granite parent material in cultivated and afforested vineyards and original forest soils. Laboratory analyses included determination of soil texture, organic carbon content, soil pH, and water repellency. This was supplemented by infiltration measurements under near-saturated conditions at the vineyard and afforested study sites. Studied soils have a low clay content and a high proportion of sand. The vineyard soils have significantly higher pH than the forest and afforested soils because the naturally acidic soils have been limed. The forest and afforested soils have similar properties, with higher organic carbon content. This makes them strongly to extremely water repellent and contrasts sharply with the wettability of cultivated vineyard soils. One afforested site, however, was less acidic and therefore was considered transitional between forest and vineyard soils. Our infiltration measurements established the influence of soil water repellency on the infiltration process, and our results highlighted that the infiltration rate in the vineyard soils was significantly higher than in afforested soils. The infiltration rate also gradually increased over time in afforested soils due to decreasing water repellency. Physically impossible negative sorptivity values in afforested soils were noted because of changes in water repellency during the infiltration process. Finally, we conclude that soil afforestation results in increased soil water repellency and a subsequent reduction in the infiltration rate at the matrix scale.

scholarly journals Diversified Arable Cropping Systems and Management Schemes in Selected European Regions Have Positive Effects on Soil Organic Carbon Content

Agriculture ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 261
Author(s):  
Rosa Francaviglia ◽  
Jorge Álvaro-Fuentes ◽  
Claudia Di Bene ◽  
Lingtong Gai ◽  
Kristiina Regina ◽  
...  
Keyword(s):  
Data Analysis ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Content ◽  
Cropping Systems ◽  
Environmentally Friendly ◽  
Conventional Tillage ◽  
Organic Carbon Content ◽  
Crop Diversification ◽  
Mineral Fertilization

In the last few decades, various crop diversification strategies and management practices have been promoted to improve or at least maintain environmental quality and agroecosystem services. We conducted a data-analysis to evaluate the effectiveness of alternatives for crop diversification and environmentally friendly farming management for arable crops in four selected European pedoclimatic regions and typical cropping systems in the Atlantic, Boreal, Mediterranean North, and Mediterranean South regions. The dataset was retrieved from 38 references and included data on site-specific environmental conditions, soil tillage, crop rotation, fertilization, and final soil organic carbon content (SOC). No tillage (NT) was more effective (7%) in increasing SOC content than minimum tillage (MT) across the studied depths (from 5 to 40 cm). Conservation tillage as whole, including NT, MT, and rotational tillage (RT) positively affected SOC content in the top 10 cm (28%) in comparison with conventional tillage (CT). Compared to monoculture, longer crop rotations (3–5 years) and the introduction of legumes resulted in higher increases in SOC contents (18%), that were higher in semiarid conditions (11%) than under humid and sub-humid climates (3.2%). The effect of fertilization on SOC contents was higher in the Mediterranean North region (28%), and organic fertilization showed the highest increases (25%) compared to the control with mineral fertilization. Higher increases in SOC contents with tillage and fertilization management were found in sites with lower SOC contents in the control treatment (conventional tillage and mineral fertilization respectively). The data analysis indicated that various European arable agroecosystems benefit both from diversified cropping systems and the adoption of environmentally friendly farming management and are thereby capable to increase SOC contents.

Impacts of land-use intensity on soil organic carbon content, soil structure and water-holding capacity

2013 ◽  
Vol 29 (4) ◽  
pp. 547-556 ◽  
Author(s):  
M. Acín-Carrera ◽  
M. José Marques ◽  
P. Carral ◽  
A. M. Álvarez ◽  
C. López ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Content ◽  
Soil Structure ◽  
Water Holding Capacity ◽  
Organic Carbon Content ◽  
Land Use Intensity ◽  
Soil Organic Carbon Content ◽  
Water Holding
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