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Assessment of Influence and Inter-Relationships of Soil Properties in Tropical Grasslands of Central India 111
goroshi, sheshakumar k.
The present experiment was carried out to assess influence and inter-relationships of soil properties in grasslands of three wildlife protected national parks in Central India. Aboveground biomass samples of grass and soil samples were collected during different seasons based on specified measurement protocol by the state forest department. Aboveground biomass of grass demonstrated a characteristic growth pattern throughout the year, increased and achieved maximum biomass during at the end of rainy season (September), while started decreasing and attained minimum biomass during pre-summer (March) season. Mean aboveground biomass in the study regions was varied from 2.03 (Bandhavgadh National Park) to 5.44 Mg ha-1 (Kanha National Park) with an average...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Grassland; Aboveground biomass; Soil moisture; Soil properties; Central India.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2535
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Cambios en el carbón orgánico del suelo en la cuenca superior del río Heihe, China 85
Qin,YY; Qi,F; Holden,NM; Cao,JJ.
The Heihe River Basin is a globally significant carbon pool, but its soil organic carbon dynamics is poorly understood. Soil samples taken between 2500 m and 4100 m revealed that the majority (>75%) of soil organic carbon was from 0-40 cm. It showed a negative relationship with pH and soil bulk density, and a positive relationship with altitude and soil water content, respectively. From 2005 to 2011, soil carbon content in the upper catchment decreased from 93 g/kg to 53 g/kg. These results suggest that policies should aim to reduce carbon loss by transferring it from the top- to the sub-soil.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil properties; Soil carbon content; Soil carbon storage; Qilian Mountains.
Ano: 2016 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572016000100020
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Capacidad productiva de praderas mono-específica, asociada y silvopastoril en un ambiente tropical seco. 32
Jiménez Guillén, Régulo.
Esta investigación tuvo como objetivo describir las características edáficas, del forraje y la respuesta productiva de bovinos, en tres tipos de pradera para un ambiente tropical seco. Los tratamientos fueron praderas con: A) Andropogon gayanus; A+C) A. gayanus y Clitoria ternatea y A+C+M) A. gayanus, C. ternatea y Morus alba. En la época de lluvias el forraje ofrecido, residual y desaparecido, fue diferente (P<0.05) entre tratamientos. El forraje total ofrecido fue de 2,007 b, 4,089 a y 4,192 a kg de materia seca (MS) ha-1 para praderas con A, A+C y A+C+M, respectivamente y, en la época seca, la cantidad de forraje ofrecida fue de 1,435 b, 3,471 a y 2,547 ab kg de MS ha-1, para las mismas praderas. Durante la época de lluvia los cambios en forraje...
Palavras-chave: Praderas asociadas; Características del suelo; Cambios en el forraje; Ganancias de peso vivo; Associated prairies; Soil properties; Forage changes; Live weight gains; Ganadería; Doctorado.
Ano: 2012 URL: http://hdl.handle.net/10521/666
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Chronofunctions of Heilu soil developed from Loess in Luochuan, on the chinese Loess plateau 90
Liu,Gang; Xu,Wennian; Cai,Chongfa.
Soil chronofunctions are an alternative for the quantification of soil-forming processes and underlie the modeling of soil genesis. To establish soil chronofunctions of a Heilu soil profile on Loess in Luochuan, selected soil properties and the 14C ages in the Holocene were studied. Linear, logarithmic, and third-order polynomial functions were selected to fit the relationships between soil properties and ages. The results indicated that third-order polynomial function fit best for the relationships between clay (< 0.002 mm), silt (0.002-0.02 mm), sand (0.02-2 mm) and soil ages, and a trend of an Ah horizon ocurrence in the profile. The logarithmic function indicated mainly variations of soil organic carbon and pH with time (soil age). The variation in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 14C age; Soil properties; Element migration; Soil development.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000400003
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Developing a hydrological model for the Mekong Basin: impacts of basin development on fisheries productivity. 31
Kite, Geoff.
Tipo: Working or Discussion Paper Palavras-chave: Simulation models; Hydrology; River basins; Water resource management; Productivity; Flow; Fisheries; Mapping; Data collection; Computer techniques; Climate; Soil properties; Stream flow; Dams; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/92781
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Differential response of microbial respiration to supplied nitrogen forms in 3 contrasting alpine meadow soils on the Tibetan Plateau 53
Zeng,Xiaoyang.
ABSTRACT An incubation experiment was conducted to examine the effects of nitrogen (N) applications in different forms (NH4NO3, NH4Cl, and KNO3) on microbial respiration considering 3 different alpine meadow soils (C poor soil, pH = 8.1, 1.6% C; C moderate soil, pH = 6.0, 5.0% C; C rich soil, pH = 7.1, 7.4% C) in the Tibetan Plateau. The addition of NH4NO3 and NH4Cl increased the microbial respiration in C poor soil, but KNO3 had no effect. The inorganic N forms had no effects on C rich soil, but decreased microbial respiration in C moderate soil. Soil microbial respiration levels across the different types were ordered as follows: C poor soil < C rich soil < C moderate soil, regardless of N addition. These results suggest that the effect of N on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: C cycling; Microbial activity; N deposition; Soil properties; High-altitude region.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300416
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Effect of fire under the soils on the organization of communities of three remnants of Amazonian savannas 39
Santos,Ronaldo Oliveira dos; Souza,Alan Pena de; Soares,Rubiene Neto; Rabelo,Fernando Galvão; Silva,Breno Marques da Silva e; Costa Neto,Salustiano Vilar da.
ABSTRACT Areas of cerrado (Brazilian savanna) in the Amazon have been poorly studied from the perspective of fire impacts on environmental sustainability, especially with regard to disturbances to soil and vegetation structure. This study aimed to analyze the influence of edaphic variables and fire together on the composition and structure of tree and shrub vegetation of three cerrado remnants in the Amazon. Eight plots were systematically installed in burned and unburned environments in each remnant. Data were submitted to floristic diversity, similarity, and diametric and altimetric structural assessments. Phytosociological parameters were obtained and submitted to Principal Component Analysis (PCA) and Canonical Correspondence Analysis (CCA). A total of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon savannas; PCA; CCA; Soil properties; Phytosociological analysis.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000300505
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Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient 114
Druille,M.; Deregibus,V.; Garbulsky,M. F..
Lucerne is one of the most valuable forage species because of its high productivity and nutritional traits. However, the knowledge of spatio-temporal variability and environmental controls of its growth generated from the simultaneous study of several sites and throughout several years is extremely scarce. Five-year biomass data were analyzed from four rain fed sites located across a climatic and edaphic gradient in Argentina. The aims proposed were to characterize annual and seasonal lucerne growth, to analyze environmental controls of spatial and temporal growth, and to compare water use efficiency (WUE) among sites. Annual growth differed significantly among sites, ranging between 7,514 and 14,262 kg DM/ha. This range at the spatial scale was mainly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil properties; Water use efficiency; Forage production; Climate.
Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200002
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Impacts of land leveling on lowland soil physical properties 90
Parfitt,José Maria Barbat; Timm,Luís Carlos; Reichardt,Klaus; Pauletto,Eloy Antonio.
The practice of land leveling alters the soil surface to create a uniform slope to improve land conditions for the application of all agricultural practices. The aims of this study were to evaluate the impacts of land leveling through the magnitudes, variances and spatial distributions of selected soil physical properties of a lowland area in the State of Rio Grande do Sul, Brazil; the relationships between the magnitude of cuts and/or fills and soil physical properties after the leveling process; and evaluation of the effect of leveling on the spatial distribution of the top of the B horizon in relation to the soil surface. In the 0-0.20 m layer, a 100-point geo-referenced grid covering two taxonomic soil classes was used in assessment of the following...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil management practices; Land forming; Irrigated rice crop; Soil movement; Soil properties.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100032
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Influence of Municipal Solid Waste Compost on Soil Properties and Plant Reestablishment in Peri-Urban Environments 117
Civeira,Gabriela.
Soils in urban areas often present characteristics that might submit these environments to erosion processes. Applying municipal solid wastes (MSW) composts to soils have been suggested as a means to improve physical and chemical properties. A field experiment with a completely randomized design was conducted in a Typic Argiudoll from a degraded area in Buenos Aires City. The objective was to evaluate the effect of MSW compost application on soil properties, residue decomposition and Poa (Poa pratensis L.) reestablishment. At the beginning of the trial, compost was prepared and applied in a bare soil on 0.25 m² square plots afterwards litterbags were incorporated and Poa was sown. Compost amounts were: 0 (control); 2 (low); 4 (medium) and 7 kg m-2 (high)...
Tipo: Journal article Palavras-chave: Soil restoration; Municipal solid waste compost; Soil properties.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300012
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Integration of Allelopathic Crop Residues and NPK Fertilizer to Mitigate Residue-Phytotoxicity, Improve Soil Fertility and Wheat Growth under Different Moisture Conditions 87
FAROOQ,N.; IQBAL,M.; ZAHIR,Z.A.; FAROOQ,M..
ABSTRACT: Phytotoxic effects of allelopathic crop residues are important to trickle for their use as a source of organic amendments to improve soil fertility. In present study, through pots and two year field studies, we examined the integrated effect of allelopathic residues and NPK fertilizer treatments including T0 (control), T1 (200-150-100 kg NPK ha 1), T2 (100-75-50 kg NPK ha-1 + mung bean straw 4 t ha-1), T3 (100-75-50 kg NPK ha-1 + rice straw 4 t ha-1), T4 (mung bean straw 8 t ha-1) and T5 (rice straw 8 t ha-1) under different water regimes on soil fertility and wheat crop. Solo application of mung bean residue and rice straw caused significant inhibition of various germination and growth traits of wheat while minimal inhibition occurred when...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Integrated nutrient management; Organic amendments; Wet dry cycles; Soil properties.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100319
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Liming acidic soils. 14
MACHADO, P. L. O. de A.; BENITES, V. de M.; BOLAN, N..
1. Description of the practice. 2. Range of applicability. 3. Impact on soil organic carbon stocks. 4. Other benefits of the practice. 5. Potential drawbacks to the practice. 6. Recommendations before implementing the practice. 7. Potential barriers for adoption.
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Solo Ácido; Acid soils; Liming; Soil organic carbon; Soil properties; Climate change; Greenhouse gas emissions.
Ano: 2021 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1137163
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Pedological Heterogeneity of Soils Developed from Lithologies of the Pirambóia, Sanga-do-Cabral, and Guará Geological Formations in Southern Brazil 90
Santos,Pablo Grahl dos; Almeida,Jaime Antonio de; Sequinatto,Letícia; Miquelluti,David José.
ABSTRACT The source material is one of the factors that most influence soil genesis and the mainly responsible for the nature, composition, and behavior of the soil. Given the geological complexity of the Santa Maria River basin, the objective of this study was to investigate whether the new lithologies described recently may be responsible for a greater variation in soil properties, as well as in the soil taxonomy itself. The study area is located in the municipality of Rosário do Sul, RS, Brazil at 30° 15’ 28” S and 54° 54’ 50” W, with average altitude of 132 m and climate type Cfa. This study was supported by a cartographic base composed of topographic charts, geological maps, satellite images, digital elevation models, and maps of geomorphometric...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lithology; Topolithosequence; Geomorphic surfaces; Soil properties; Multivariate analysis.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100310
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Productivity and performance of irrigated wheat farms across canal commands in the Lower Indus Basin 31
Hussain, Intizar; Marikar, Fuard; Jehangir, Waqar Ahmed.
A study of the enormous differences in agricultural productivity that exist across farms and regions in Pakistan, where, for example, recent farm-level data from Sindh, indicates that irrigated wheat output per hectare varies from 0.5 to 5.4 tons across farms. Looks at the central goal of agricultural policy in the country, viz. improving and sustaining productivity, narrowing the existing productivity gaps, and enhancing resource use efficiencies to meet food requirements of a rapidly growing population.
Tipo: Report Palavras-chave: Irrigated farming; Wheat; Productivity; Performance evaluation; Water management; Cropping systems; Water supply; Soil properties; Models; Pakistan; Lower Indus Basin; Agribusiness; Agricultural Finance; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Production Economics; Productivity Analysis.
Ano: 2000 URL: http://purl.umn.edu/53023
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Productivity and performance of irrigated wheat farms across canal commands in the Lower Indus Basin 31
Hussain, Intizar; Marikar, Fuard; Jehangir, Waqar Ahmed.
A study of the enormous differences in agricultural productivity that exist across farms and regions in Pakistan, where, for example, recent farm-level data from Sindh, indicates that irrigated wheat output per hectare varies from 0.5 to 5.4 tons across farms. Looks at the central goal of agricultural policy in the country, viz. improving and sustaining productivity, narrowing the existing productivity gaps, and enhancing resource use efficiencies to meet food requirements of a rapidly growing population.
Tipo: Report Palavras-chave: Irrigated farming; Wheat; Productivity; Performance evaluation; Water management; Cropping systems; Water supply; Soil properties; Models; Pakistan; Lower Indus Basin; Community/Rural/Urban Development; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Production Economics; Productivity Analysis.
Ano: 2000 URL: http://purl.umn.edu/53024
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Soil Erodibility under Natural Rainfall Conditions as the K Factor of the Universal Soil Loss Equation and Application of the Nomograph for a Subtropical Ultisol 90
Cassol,Elemar Antonino; Silva,Tiago Stumpf da; Eltz,Flávio Luiz Foletto; Levien,Renato.
ABSTRACT: Erodibility represents the intrinsic susceptibility of the soil to the erosion process, represented by the K factor in the Universal Soil Loss Equation (USLE). In Brazil, there are few field experiments determined with a series larger than ten years of data, which are the most reliable for quantifying the K factor. The aim of this study was to determine the K factor of the USLE by the direct method, relating soil losses determined in the field under standard conditions to erosivity of rains, and by the analytic method, applying the Wischmeier nomograph. The data on soil loss by water erosion were obtained in a field experiment under natural rainfall conditions from 1976 to 1989 in an Ultisol at the Agronomic Experimental Station in Eldorado do...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water erosion; Soil loss; Soil properties; Erosion modeling; Surface runoff.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100518
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Soil spiders (Arachnida: Araneae) in native and reforested Araucaria forests 63
Pereira,Jamil de Morais; Cardoso,Elke Jurandy Bran Nogueira; Brescovit,Antonio Domingos; Oliveira Filho,Luís Carlos Iuñes de; Segat,Julia Corá; Baretta,Carolina Riviera Duarte Maluche; Baretta,Dilmar.
ABSTRACT: Spiders are part of the soil biodiversity, considered fundamental to the food chain hierarchy, directly and indirectly influencing several services in agricultural and forest ecosystems. The present study aimed to evaluate the biodiversity of soil spider families and identify which soil properties influence their presence, as well as proposing families as potential bioindicators. Native forest (NF) and reforested sites (RF) with Araucaria angustifolia (Bertol.) Kuntze were evaluated in three regions of the state São Paulo, both in the winter and summer. Fifteen soil samples were collected from each forest to evaluate the biological (spiders and microbiological), chemical and physical soil properties, in addition to properties of the litter (dry...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Spider fauna; Soil biodiversity; Soil properties; Soil quality.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000300701
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Sorption and desorption of indaziflam degradates in several agricultural soils 63
Alonso,Diego Gonçalves; Oliveira Jr,Rubem Silvério de; Koskinen,William Charles; Hall,Kathleen; Constantin,Jamil; Mislankar,Suresh.
ABSTRACT Processes regulating pesticide fate in the environment are influenced by the physicochemical properties of pesticides and soils. Sorption and desorption are important processes as they regulate the movement of pesticides in soil. Although sorption-desorption is widely studied for herbicides, studies involving their metabolites in soil are scarce. Sorption and desorption of indaziflam metabolites (indaziflam-triazinediamine (FDAT), indaziflam-triazine-indanone (ITI) and indaziflam-carboxilic acid (ICA)) were investigated in six Brazilian (BRA) soils and three United States (USA) soils with different physicochemical properties. The Freundlich equation described sorption of the metabolites for all soils (R2 > 0.98; 1/n ~ 1). Sorption order (Kf)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adsorption; Hysteresis; Metabolites; Soil properties.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200169
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Spatial dependency and correlation of properties of soil cultivated with oil palm, Elaeis guineensis, in agroforestry systems in the eastern Brazilian Amazon 36
SILVA,Camila Santos da; MENDONÇA,Bruno Araujo Furtado de; PEREIRA,Marcos Gervasio; ARAÚJO,Emanuel José Gomes de; CASTELLANI,Débora Christina.
ABSTRACT Geostatistics is a tool that can be used to produce maps with the distribution of nutrients essential for the development of plants. Therefore, the present study aimed to analyze the spatial variation in chemical attributes of soils under oil palm cultivation in agroforestry systems in the eastern Brazilian Amazon, and their spatial dependence pattern. Sixty spatially standardized and georeferenced soil samples were collected at each of three sampling sites (DU1, DU2, and DU3) at 0-20 cm depth. Evaluated soil chemical attributes were pH, Al3+, H+Al, K+, Ca2+, Mg2+, cation exchange capacity (CEC), P, and organic matter (OM). The spatial dependence of these variables was evaluated with a semivariogram analysis, adjusting three theoretical models...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cokriging; Ordinary kriging; Semivariogram; Soil properties.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000400280
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Spatial Variability of Soil Fauna Under Different Land Use and Managements 90
Silva,Raimunda Alves; Siqueira,Glécio Machado; Costa,Mayanna Karlla Lima; Guedes Filho,Osvaldo; Silva,Ênio Farias de França e.
ABSTRACT Geostatistics allows the evaluation of the distribution pattern of data with high spatial variability in agricultural systems. This study aimed to evaluate the spatial variability of biological diversity indices of soil fauna under different land (agriculture and forest). Samples were collected in seven areas (millet, soybean, corn, eucalyptus, pasture crops, and preserved and disturbed Cerrado), in Maranhão state, Brazil. The soil fauna was caught trapped in pitfall traps, installed 3 m away from each other. In each area, 130 traps were maintained for seven days. After this period, they were removed and their content transferred to bottles and taken to the laboratory, where the insects were screened and identified at the level of orders and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil biodiversity; Soil properties; Geostatistics.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100409
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