scholarly journals Does the irrigated mango cultivation in the semiarid change the Physical and chemical attributes of the soil?

2019 ◽  
Vol 10 (3) ◽  
pp. 402-414
Author(s):  
Leane Rodrigues dos Santos ◽  
Augusto Miguel Nascimento Lima ◽  
Marcos Sales Rodrigues ◽  
Jailson Cavalcante Cunha ◽  
Laura Paula Araújo dos Santos ◽  
...  
Keyword(s):  
Land Use ◽  
Agricultural Production ◽  
Negative Impact ◽  
Soil Samples ◽  
Base Saturation ◽  
Native Vegetation ◽  
Row Spacing ◽  
Physical Attributes ◽  
Chemical Attributes ◽  
Physical And Chemical

The replacement of native vegetation by crops may result in changes in the chemical and physical attributes of the soil, preventing the sustainability of the agricultural production. Therefore, the aim of this study was to evaluate, in two consecutive years (2014 and 2015), the effect of irrigated mango cultivation in some physical and chemical attributes of the soil in relation to Caatinga in Petrolina-PE, Brazil. In areas under irrigated mango (under the canopy region and the row spacing) and Caatinga (taken as reference), soil samples were collected at the 0-10 and 10-20 cm depths. The chemical and physical analyzes were performed, and were calculated bases sum (BS), cations exchangeable capacity (CEC) and base saturation (V, %). The irrigate mango cultivation (canopy region) increased the macronutrients content (P, K, Ca and Mg), BS and V (%) for both evaluated years at the 0-10 and 10-20 cm depths. In soil under irrigated mango cultivation (under the canopy region and in the row spacing), the macronutrient contents presented a stochastic pattern in the years of 2014 and 2015. The change of land use, from Caatinga to irrigated mango cultivation, does not induce a negative impact in the soil chemical attributes under the adopted management conditions.

scholarly journals Soil Attributes Using Different Agricultural Use Systems in the Rio Grande do Norte Semiarid, Brazil

2018 ◽  
Vol 10 (11) ◽  
pp. 190
Author(s):  
Ana Karenina Fernandes de Sousa Ribeiro ◽  
Jeane Cruz Portela ◽  
Rafael Oliveira Batista ◽  
Carolina Malala Martins Souza ◽  
Joseane Dunga da Costa ◽  
...  
Keyword(s):  
High Salinity ◽  
Clay Fraction ◽  
Particle Size Analysis ◽  
Semiarid Region ◽  
Size Analysis ◽  
Plasticity Limit ◽  
Physical Attributes ◽  
Agricultural Use ◽  
Chemical Attributes ◽  
Physical And Chemical

The semiarid region is extremely fragile to anthropogenic actions. Thus, the objective of this study is to evaluate the physical and chemical attributes of soils with different agricultural uses. The research was carried out in the municipality of Governador Dix-Sept Rosado. Fertility and physical analyses were performed. The results were interpreted by multivariate analysis. The soils that presented a eutrophic character were influenced by lithology. In the Cambissolo (Haplustepts), there was an increase in the limits of liquidity and plasticity due to the increase of the clay fraction and total organic carbon. By the particle size analysis, the profiles presented variations in textural classes. We concluded that the physical attributes moisture, liquidity limit, plasticity limit, clay plasticity index, thin sand and the chemical attributes pH, (H + Al), V and PST were the most sensitive for the distinction of environments. The studied areas presented acidity reactions to alkalinity with presence of Al3+, (H + Al) and high salinity.

scholarly journals Land use and soil quality in peri-urban farms in Southern Brazil

2021 ◽  
Vol 27 (1) ◽  
pp. 160-174
Author(s):  
Agi Costa Cassimo ◽  
Paulo César Nascimento ◽  
Patrícia Lima De Lima ◽  
Carlos Gustavo Tornquist ◽  
Carlos Alberto Bissani ◽  
...  
Keyword(s):  
Land Use ◽  
Soil Quality ◽  
Production Systems ◽  
Family Farms ◽  
Porto Alegre ◽  
Organic Farms ◽  
Rural Landscapes ◽  
Horticultural Crops ◽  
Chemical Attributes ◽  
Physical And Chemical

Small family farms constitute a major part of land use in the surrounding regions of Brazilian cities, as these farms not only contribute to the food supply, but also help conserve rural landscapes and improve environmental services. This study evaluated agricultural impacts on soil quality in seven family farms in Porto Alegre municipality, Rio Grande do Sul state, RS. Selected production units (PUs) were managed as conventional or organic farms, producing horticultural crops, fruits and pastures, besides native forests. Soil samples were collected from representative areas for five use and management types, under disturbed and undisturbed conditions, at 0–20 cm depth. Physical and chemical attributes were analyzed, comparing the effects of types of land use. Data analysis showed that more affected attributes were soil density, macro and microporosity, phosphorus content, pH and electrical conductivity. Macroporosity, phosphorus, zinc and cooper contents are the greater threats to soil quality. Horticulture, under both agroecological and conventional production systems caused major changes compared to natural conditions.

scholarly journals Small relief shape variations influence spatial variability of soil chemical attributes

2006 ◽  
Vol 63 (2) ◽  
pp. 161-168 ◽  
Author(s):  
Zigomar Menezes de Souza ◽  
José Marques Júnior ◽  
Gener Tadeu Pereira ◽  
Diogo Mazza Barbieri
Keyword(s):  
Spatial Variability ◽  
Cation Exchange ◽  
Sugar Cane ◽  
Management System ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Soil Samples ◽  
Base Saturation ◽  
Chemical Attributes

Soils with small variations in relief and under the same management system present differentiated spatial variabilities of their attributes. This variability is a function of soil position in the landscape, even if the relief has little expression. The aim of this work was to investigate the effects of relief shape and depth on spatial variability of soil chemical attributes in a Typic Hapludox cultivated with sugar cane at two landscape compartments. Soil samples were collected in the intercrossing points of a grid, in the traffic line, at 0-0.2 m and 0.6-0.8 m depths, comprising a set of 100 georeferenced points. The spatial variabilities of pH, P, K, Ca, Mg, cation exchange capacity and base saturation were quantified. Small relief shape variations lead to differentiated variability in soil chemical attributes as indicated by the dependence on pedoform found for chemical attributes at both 0-0.2 m and 0.6-0.8 m depths. Because of the higher variability, it is advisable to collect large number of samples in areas with concave and convex shapes. Combining relief shapes and geostatistics allows the determination of areas with different spatial variability for soil chemical attributes.

scholarly journals Influence of fertilizer and hydrogel on physical-chemical attributes of substrate for seedling production

2019 ◽  
Vol 35 (5) ◽  
Author(s):  
Glauce Taís de Oliveira Sousa Azevedo ◽  
Anderson Marcos de Souza ◽  
Gileno Brito de Azevedo ◽  
Paulo Eduardo Teodoro ◽  
José Raimundo Luduvico de Sousa
Keyword(s):  
Water Retention ◽  
Water Retention Capacity ◽  
Forest Nursery ◽  
Retention Capacity ◽  
Physical Chemical ◽  
Physical Attributes ◽  
Chemical Attributes ◽  
Physical And Chemical ◽  
Different Levels ◽  
Different Doses

The incorporation of the hydrogel into the substrate used in the forest nursery promotes improvements in its physical-chemical attributes. However, several factors influence the hydrogel efficiency, such as the increase of salts, promoted by fertilizer of the substrate. Therefore, this study aimed to evaluate the effects of the incorporation of fertilizer levels and hydrogel doses on the physical-chemical attributes of a substrate to produce forest seedlings. Different levels of basic fertilizer commonly used in the nursery (100%, 50% and 0%) and different doses of the hydrogel (0, 1, 2 and 3 g L-1) were incorporated into the substrate Tropstrato Florestal®, consisting of 12 treatments in a 3 x 4 factorial scheme. A sample of the substrate in each treatment was sent for analysis of its physical and chemical attributes. To evaluate the effect of the treatments on the physical-chemical attributes of the substrate, was used the multivariate principal components analyses. The levels of fertilizer and hydrogel doses were correlated with the attributes of the substrates obtained in each treatment. The incorporation of different fertilizer levels and hydrogel doses to the substrate modified their chemical and physical attributes. Fertilizers have influenced mainly the chemical attributes of the substrate, whereas hydrogels have influenced the physical attributes, mainly those related to water retention capacity and availability.

scholarly journals Physical and chemical attributes of a soil cultivated with rubber tree under three management strategies

2020 ◽  
pp. 1987-2002
Author(s):  
Yuri Luiz Augusto dos Santos ◽  
Adriana Aparecida Ribon ◽  
Luis Filipe Caixeta Bitencourt ◽  
Leonardo Rodrigues Barros ◽  
Kathleen Fernandes ◽  
...  
Keyword(s):  
Native Species ◽  
Block Design ◽  
Management Strategies ◽  
Rubber Tree ◽  
Pigeon Pea ◽  
Soil Penetration Resistance ◽  
Randomized Block Design ◽  
Physical Attributes ◽  
Chemical Attributes ◽  
Physical And Chemical

Rubber tree (Hevea brasiliensis) is a native species of the Amazon biome. This species had great economic importance due to the production of latex, used to obtain natural rubber. Seeking growth in productivity with adequate management is necessary to optimize production and increase areas with rubber trees. This study aimed to verify the physical and chemical attributes of soil under three different managements and two rubber tree clones, searching for the best alternative for the general edaphoclimatic conditions of the Cerrado biome. The experiment was installed in Palmeiras of Goiás, GO, Brazil, in a randomized block design in a 2×3 factorial arrangement, consisting of two rubber tree clones (PB 312 and RRIM 600) and three management strategies (organomineral fertilizer with poultry litter, pigeon pea as green manure, and mechanical mowing-brushcutter). Physical attributes such as soil density, soil penetration resistance, soil moisture and aggregation, soil fertility, and tree development were analyzed. Statistical analyses of variance and Tukey test were carried out in order to compare the dendrometric data and physical and chemical attributes of the soil under the different treatments applied in the inter-row of rubber trees. No significant statistical differences were found among treatments and between clones in relation to soil physical attributes. However, the soil pH reduced the use of organomineral fertilizer and the clone RRIM 600 had the highest heights.

scholarly journals Evaluation of Land Use System for Supporting Sustainable Development of Agriculture in Quoc Oai District, Hanoi City

2017 ◽  
Vol 33 (4) ◽  
Author(s):  
Do Thi Thu Tai ◽  
Tran Van Tuan
Keyword(s):  
Land Use ◽  
Sustainable Development ◽  
Agricultural Production ◽  
Agricultural Land ◽  
Negative Impact ◽  
Evaluation Process ◽  
Fruit Trees ◽  
Ecological Adaptability ◽  
Land Use Types ◽  
Rice Fish

The area of ​​agricultural land in Quoc Oai District is quite large of  9949,0 hectares, accounting for 65,83% of total area of the district. The study have identified 77 land use systems (LUS) which are based on 56 land units and 7 major land use types. The effectiveness of ecological adaptability, economics, social and environment is evaluated and allows to determine main developed fields in ​​agricultural production, consistings of: wet rice, rice-fish, fruit trees, tea, short-day plants, forest (acacia) and aquaculture. Fruit trees is a land use types which have wide ecological adaptability area, the best economic effectiveness (168.4 million/ha/year), the local people's priorities, low negative impact on the environment. LUS evaluation process described in this paper can be applied to other districts which have an agricultural area in Ha Noi.

scholarly journals Distribution of Various Geochemical Forms of Potassium under Horticulture Land Use System of District Ganderbal

2020 ◽  
pp. 1-10
Author(s):  
. Khushboo ◽  
Mohammad Auyoub Bhat ◽  
Mushtaq Ahmad Wani ◽  
Shabir Ahmed Bangroo
Keyword(s):  
Land Use ◽  
Dynamic Equilibrium ◽  
Soil Depth ◽  
Chemical Properties ◽  
Soil Samples ◽  
Water Soluble ◽  
Silty Clay ◽  
Surface Layers ◽  
Land Use System ◽  
Physical And Chemical

Surface (0-20 cm) and sub-surface (20-40 cm) soil samples were collected from five locations under horticulture land use system of District Ganderbal. The distribution of potassium forms (water soluble, available, exchangeable, non-exchangeable, fixed, lattice and total) were investigated. Soil samples were analyzed for different physical and chemical properties and fractions of potassium. The soils were slightly acidic to neutral in reaction  and soil texture varied from silty clay loam to silt loam. Irrespective of soil depth sequential order of potassium fractions were TK>LK>FK>NEK>AK>EK>WSK. The trend of decrease in water soluble and exchangeable K was noticed in these soils from surface to sub-surface layers. All forms were in dynamic equilibrium with one another and  positively  and significantly correlated with  Organic carbon, CEC, Silt and clay and negatively to sand.

scholarly journals Genesis of sandstone-derived soils in the Cerrado of the Piauí State, Brazil

2019 ◽  
Vol 14 (4) ◽  
pp. 1
Author(s):  
Diego Ferreira de Souza ◽  
Ronny Sobreira Barbosa ◽  
Yuri Jacques Agra Bezerra da Silva ◽  
Márcio Cleto Soares de Moura ◽  
Romário Porto de Oliveira ◽  
...  
Keyword(s):  
Organic Matter ◽  
Exchange Capacity ◽  
Low Ph ◽  
Parent Material ◽  
Soil Samples ◽  
Soil Profiles ◽  
Exchangeable Bases ◽  
Low Degree ◽  
Chemical Attributes ◽  
Physical And Chemical

This study characterized the morphological, physical and chemical attributes of sandstone-derived soils at the Cerrado of the Piauí State, Brazil, in order to identify evolutionary standards. The study was carried out with five representative soil profiles identified as P1-RY (Typical Flavic Psychotic Neosol - Aquents), P2-PA (Typical Dystrophic Yellow Argisol - Alfisol), P3-RL (Fragmentary Litholic Distrophic Neosol - Psammenit), P4-RQ (Typical Ortic Quartzenetic Neosol - Orthents) and P5-PV (Typical Dystrophic Red Argisol - Ultisol). Soil samples were submitted laboratory analysis described morphologically. In general, the soils presented high sand content, low pH, low content of exchangeable bases and low cation exchange capacity (CEC). Organic matter governed the CEC in most cases, suggesting dependence of organic matter in the supply of charges. These soils showed a low degree of weathering, but with iron of high crystallinity. Thus, the relief and the parent material are the major important soil-forming factors at the Cerrado of the Piauí State. Moreover, these soils are young, with the soils from the Piauí Formation being more evolved. However, the sandstones from the Canindé Group apparently are providing lithological secondary minerals for the soil.

scholarly journals Soil Chemical Attributes under Crop-Livestock-Forest Integration System and in Different Land Uses in Mata dos Cocais Region

2018 ◽  
Vol 10 (4) ◽  
pp. 370
Author(s):  
Victor Roberto Ribeiro Reis ◽  
Diana Signor Deon ◽  
Luciano Cavalcante Muniz ◽  
Uelson Serra Garcia ◽  
Ilka South de Lima Cantanhêde ◽  
...  
Keyword(s):  
Exchange Capacity ◽  
Base Saturation ◽  
Native Vegetation ◽  
Native Forest ◽  
Land Uses ◽  
Integration System ◽  
Degraded Pasture ◽  
Soil Cation Exchange Capacity ◽  
Chemical Attributes ◽  
Potential Acidity

The sustainability of ecosystems is closely linked with the assessment of soil properties that estimate their quality. This work proposes to evaluate soil chemical attributes as a function of the implantation of a crop-livestock-forest integration system (ICLF) in the region of Mata dos Cocais in the state of Maranhão, Northeast Brazil. The four different land uses evaluated were native vegetation with babassu, capoeira vegetation, degraded pasture and area under ICLF system (with marandu grass, maize and eucalyptus consortium). The samples were collected up to one meter deep, comprising seven layers: 0.00-0.10, 0.10-0.20, 0.20-0.30, 0.30-0.40, 0.40-0.60, 0.60-0.80 and 0.80-1.0 m. The chemical attributes evaluated were pH, Ca, Mg, Al, P, K and Na, potential acidity, base sum, base saturation and soil cation exchange capacity (CEC). The levels of P, in the 0.00-0.10 m layer, were higher in the ICLF system than those of the native forest with babassu. The levels of K in the ICLF system and degraded pasture were higher than the other land uses up to a depth of 0.40 m, ranging from 0.92 cmolc dm-3 to 0.62 cmolc dm-3 and 1.04 cmolc dm-3 and 0.67 cmolc dm-3, respectively. Base saturation was higher in soils under ICLF system and degraded pasture than those observed in native forest and capoeira vegetation. There was an effect in chemical attributes of the soil such as a function of land use and, in general, the highest values were found in areas with degraded pasture and ICLF.

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