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Beans cultivation and water regime on soil physical attributes CIGR Journal
Domingues, Rafael; Pereira, André Belmont; Pires, Luiz Fernando; Schiebelbein, Luis Miguel; Barbosa, Eduardo Augusto Agnellos; Auler, André Carlos.
Beans crop is an agricultural staple largely consumed in Brazil because it is part of the basic food of the population. Such a crop is usually grown by small growers and turns out to be of a great social and economical importance. The aim of the current manuscript was to scrutinize the effect of soil water status on its physical attributes, such as bulk density, total porosity, macroporosity, microporosity, hydraulic conductivity under protected environment conditions on beans crop (Phaseolus vulgaris L.). The effect of the soil physical attributes on the biological response of the plants was also investigated. The experiment was installed in March of 2016 in a greenhouse. The experimental design was completely randomized in a factorial scheme with four...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agronomy; Agrometeorology; Soil Physics; Irrigation Science Phaseolus vulgaris L; Hydraulic conductivity; Soil moisture; Macroporosity; Microporosity; Bulk density.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4585
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Caracterização físico-hídrica de latossolo amarelo da região de Capitão Poço, Pará. Infoteca-e
COSTA, M. P. da; TEIXEIRA, L. B..
bitstream/item/42255/1/Boletim-Pesquisa-133-CPATU.pdf
Tipo: Séries anteriores (INFOTECA-E) Palavras-chave: Densidade aparente; Capitao Poco; Pará; Brasil; Oxysol; Organic mather; Analysis.; Análise; Água; Argila; Física; Matéria Orgânica; Latossolo Amarelo; Porosidade; Solo.; Amazonia; Bulk density; Clay; Porosity; Soil physics; Water..
Ano: 1992 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380484
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Dye tracer and morphophysical properties to observe water flow in a Gleyic Luvisol Scientia Agricola
Salvador,Monica Martins Silva; Köhne,Sigrid; Köhne,John Maximilian; Lennartz,Bernd; Libardi,Paulo Leonel.
The understanding of the preferential water flow and solute transport is important with regard to losses of nutrients and pesticides that affect the quality of the groundwater or surface water resources. Experiments using the brilliant blue dye tracer, a tension infiltrometer (TI) and a double square infiltrometer (DI) were carried out in the experimental field site located around 15 km southeast of the city of Rostock (North-Eastern Germany) on arable land in a Pleistocene lowland landscape where corn (Zea mays L.) and barley (Hordeum spp.) had been cultivated. One day after dye the infiltration, a pit was dug and vertical profiles were prepared in the TI and DI sites to assess the dye pathways in the subsoil of a Gleyic Luvisol. We wanted to examine if...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil water content; Bulk density; Cone resistance.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000200005
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Effect of cropping systems in no-till farming on the quality of a Brazilian Oxisol Rev. Bras. Ciênc. Solo
Seben Junior,Getulio de Freitas; Corá,José Eduardo; Lal,Rattan.
The no-till system with complex cropping sequences may improve the structural quality and carbon (C) sequestration in soils of the tropics. Thus, the objective of this study was to evaluate the effects of cropping sequences after eight years under the no-till system on the physical properties and C sequestration in an Oxisol in the municipality of Jaboticabal, Sao Paulo, Brazil. A randomized split-block design with three replications was used. The treatments were combinations of three summer cropping sequences - corn/corn (Zea mays L.) (CC), soybean/soybean (Glycine max L. Merryll) (SS), and soybean-corn (SC); and seven winter crops - corn, sunflower (Helianthus annuus L.), oilseed radish (Raphanus sativus L.), pearl millet (Pennisetum americanum (L.)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Crop rotation; Winter crops; Soil aggregates; Least limiting water range; Bulk density.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400023
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Effect of moisture content variation on some physical properties of Achi seeds CIGR Journal
Oji, Irouwa; Asoegwuand, S.N.; Okereke, C.D..
The physical properties of Achi seeds were determined as a function of moisture content in the range of 12.5% to 24% dry basis (average range of Achi seed between eating and harvesting) to provide information for the design of processing, handling, harvesting and storage equipment and facilities. The average equivalent diameter was found to increase from 12.31 mm at 12.5% d.b moisture content to 12.62 mm at 24% d.b moisture content; geometric mean diameter of 9.99 mm at 12.5% moisture content to 10.37 mm at 24% moisture content. At that range of moisture content investigated, the sphericity increased from 47.80% to 48.82%; the aspect ratio from 0.761 to 0.765; the volume from 977.4 mm3 to 1053.89 mm3; surface area from 313.6 mm2 to 337.66 mm2; square mean...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural and Bio-resources Engineering Achi; Equivalent mean diameter; Moisture content; Sphericity; Surface area; Bulk density; Volume; Aspect ratio.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3695
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Effect of some operating parameters on the performance of a pelleting press CIGR Journal
Okewole, Oyewole Titilope; Igbeka, Joseph.
One of the major challenges of fish pellets production at the micro and small scale level is the principal complement of equipment necessary for the local manufacture of the same. Imported fish pellets are quite expensive and unaffordable for the average fish farmer. Hence, the need to be able to produce fish feed at a lower cost yet achieving the objective of quantity and quality expected of pelleted feeds are paramount to the viability of the enterprise.The aim of the study was to investigate the effects of some operating parameters (moisture content of the compounded feed, die speed of the press, and the feed rate) on the pelleting efficiency, throughput capacity, pellet durability and pellet bulk density and to optimise the conditions. Three moisture...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural and Process Engineering pelleting press; Efficiency; Durability; Throughput capacity; Bulk density; Response Surface Methodology (RSM); Evaluation.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3502
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Effect of two-axle and three-axle sugarbeet tanker harvester on selected soil-physical properties in dry and wet soil conditions CIGR Journal
Moitzi, Gerhard; Amon, Stefan; Klik, Andreas; Schwen, Andreas.
The effects of two-axle and three-axle sugarbeet harvester under dry (gravimetric soil water content 20%) and wet (gravimentric soil water content 30%) soil conditions on bulk density, soil penetration resistance and saturated hydraulic conductivity were determined in a long-term non-ploughed field with a silty loam soil in the Pannonian region of Austria. The tyre-inflation pressure of the sugarbeet harvester was set to 140 kPa in the front axle and 190 kPa in the middle and rear axles. The total weight of the three-axle harvester was distributed equally with about 20 Mg each axle. Two-axle harvester distributed the total weight of 49.1 Mg to the rear axle with 27.3 Mg and to the front axle with 21.8 Mg.The differences of bulk density (10-15 cm, 25-30 cm,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Soil Science sugarbeet tanker harvester; Soil moisture conditions; Bulk density; Soil penetration resistance; Saturated hydraulic conductivity.
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5083
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Engineering and proximate properties of miracle berry fruit (Synsepalum dulcificum L.) essential for its processing equipment design CIGR Journal
Fadeyibi, Adeshina.
This research was carried out to determine some physical, mechanical, mineral and proximate properties of miracle berry fruits (Synsepalum dulcificum L.) in the moisture range of 6.45− 9.73% (db). Physical properties including bulk density and terminal velocity were determined using standard methods. Mechanical properties including stiffness and deformation were determined using quasi-static compression analysis. Proximate and mineral compositions of the fruit including crude protein and calcium contents were determined using standard analytical methods. Results showed that the terminal velocity, stiffness, crude protein, calcium contents decreased generally with an increase in the moisture content (p < 0.05). The average values of the terminal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bulk density; Crude protein; Crude fibre; Mechanical properties; Miracle fruit.
Ano: 2021 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6011
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Estimation of carbon stocks under different soil uses in the central highlands of Mexico Acta Agron. (Palmira)
Álvarez-Arteaga*,Gustavo; García-Fajardo,Belina; Orozco-Hernández,María Estela; Mireles-Lezama,Patricia; Contreras-Martínez,Julieta.
Abstract The loss of organic carbon stocks from the soil and their expulsion into the atmosphere due to the effect of anthropogenic activities must be understood as a problem that goes beyond the environmental to the social and economic context, with the soil degradation being just one of its many impacts. While the accumulation of carbon in the soil depends naturally on the interaction among a series of biotic and abiotic factors, management practices often cause the deterioration of its physical, chemical and biological properties, and, thus, increase the levels of mineralization and a reduction in carbon stocks. This research was undertaken in the municipality of San José del Rincón, State of Mexico, in volcanic soils under different conditions of soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Stocks; Bulk density; Organic material; Management practices; Forest soils.
Ano: 2017 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000100021
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Field Performance of a Winged Scarifier as a Function of Soil Compaction and Water Content Chilean J. Agric. Res.
Cholaky,Carmen; Cisneros,José M; Balbuena,Roberto.
Initial soil conditions, operational aspects, and tool shape affect the efficiency of soil decompaction. The objective of this study was to evaluate the performance of a winged scarifier as a function of soil compaction and edaphic water content. The experiment was carried out in a typical Hapludoll. Treatments considered two soil compaction levels: high (HC) and low compaction (LC); and three soil water contents: wet (WS), humid (HS), and dry (DS) with 9, 14, and 19% gravimetric water content, respectively. A split-plot randomized block design was applied. Tractive effort, disturbed area, tillage depth, specific resistance, and power were evaluated. Results showed that tractive effort was 17% greater in HC than LC, and in both cases HS was greater than WS...
Tipo: Journal article Palavras-chave: Agricultural engineering; Winged scarifier; Bulk density; Water content; Compaction.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100016
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Gravimetrical and frictional properties of broilers diets CIGR Journal
Mohhamadi, Vahid; Abbaspour, Behnam; Sharifi, Seyed Davoud; Mirzabe, Amir Hossein.
Abstract: Information on physical properties of broiler chickens diets is not available in literatures and such information is important for design and construction of poultry equipments.  Some physical properties of starter, grower and finisher diet of broiler chickens, namely: gravimetrical (bulk density, true density and porosity) and frictional properties (coefficient of friction filling angle of repose, empting angle of repose and pouring angle of repose) were studied.  Effect of height of falling diets to the containers at 150, 250 and 350 mm and volume of the containers at 500, 600, 1,100 and 2,000 mL on bulk density and porosity of diets were studied.  Results indicated that true density of the starter; grower and finisher diets were 1,442.574,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broilers diet; Bulk density; True density; Coefficient of friction; Angle of repose.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2755
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Hydro-Physical Properties of a Typic Hapludult under the Effect of Rice Husk Ash Rev. Bras. Ciênc. Solo
Islabão,Gláucia Oliveira; Lima,Cláudia Liane Rodrigues de; Vahl,Ledemar Carlos; Timm,Luis Carlos; Teixeira,Juliana Brito da Silva.
ABSTRACT The combustion of rice husk generates a partially burnt mixture called rice husk ash (RHA) that can be used as a source of nutrients to crops and as a conditioner of soil physical properties. The objective of this study was to evaluate the effect of RHA levels on the hydro-physical properties of a Typic Hapludult. The experimental design was composed of random blocks with four replications, which comprised plots of 24 m2 and treatments with increasing RHA rates: 0, 40, 80 and 120 Mg ha-1. Undisturbed soil samples were collected in the soil layers of 0.00-0.10 and 0.10-0.20 m after nine months of RHA application, using steel cylinders (0.03 m of height and 0.047 m of diameter). These samples were used to determine soil bulk density (Bd), total soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bulk density; Soil porosity; Available water capacity; Soil compressibility; Soil aggregation.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100407
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La materia orgánica del suelo en seis agroecosistemas de la sabana de Huimanguillo, Tabasco. Colegio de Postgraduados
Murillo de la Rosa, Arnulfo.
Los suelos de la sabana de Huimanguillo, se localizan en lomeríos con pendientes ligeras, son de baja fertilidad, presentan alta acidez con pH que oscilan entre 4.0 a 5.5 y contenidos de materia orgánica de 1 a 4 %, a veces hasta de 20 %. La materia orgánica desempeña un papel importante en el suelo ya que aporta una gran variedad de elementos nutritivos para las plantas, y modifica la estructura del mismo, el conocimiento sobre su aporte de nutrientes es escaso, por lo que, las estimaciones del suministro al suelo se basan más bien en el rendimiento. El presente trabajo tuvo como objetivo estimar la densidad aparente (Dap), las reservas de carbono orgánico total (COT), nitrógeno total (Nt), la relación carbono nitrógeno (C/N), el carbono orgánico soluble...
Palavras-chave: Acrisol; Agroecosistemas; Densidad aparente; Carbono orgánico total; Nitrógeno total; Carbono orgánico soluble; Indice óptico y relación C/N; Agroecosystems; Bulk density; Total organic carbon; Total nitrogen; Soluble organic carbon; Optical index and C/N; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2010 URL: http://hdl.handle.net/10521/254
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Least limiting water range and physical quality of soil under groundcover management systems in citrus Scientia Agricola
Fidalski,Jonez; Tormena,Cássio Antonio; Silva,Álvaro Pires da.
Machinery-based farming operations used for perennial fruit crops often damage soils, particularly if the soil is wet and prone to compaction. We hypothesized that perennial vegetation growing in the interrows of orange orchards can mitigate the soil physical degradation from machinery traffic. The objective of this study was to investigate the effects of different groundcover management systems on the soil physical quality indicators including the least limiting water range (LLWR). An experiment was started in 1993 in a Typic Paleudult to evaluate three groundcover management systems: Bahia grass (Paspalum notatum) with mowing, perennial peanut (Arachis pintoi), and natural regrowth in which weeds were controlled by herbicide. The experimental design was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic carbon; Soil compaction; Bulk density; Resistance to penetration; Available water.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000400012
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Meyer and schilz function to estimate common bean seed water content evaluated by radiofrequency Scientia Agricola
Berbert,Pedro Amorim; Molina,Marília Berbert; Viana,Alexandre Pio; Carlesso,Vinícius de Oliveira; Oliveira,Marcia Terezinha Ramos de.
Derivation of density-independent dielectric functions for moisture determination in grains is important for the implementation of on-line sensors in automated driers. The object of this study was to investigate the Meyer and Schilz function [(epsilon'1)/epsilon"] for indirect and non-destructive water content measurement of seeds of common bean by radiofrequency, where epsilon' and epsilon" are the relative permittivity and the dielectric loss factor, respectively. Samples consisted of common bean seeds variety Campeão-3 at moisture contents ranging from 11.5 to 20.6% w.b., and bulk densities from 756 to 854 kg m-3, performing dielectric measurements in a room at 20 ± 1ºC and 66 ± 2% relative humidity. The model could estimate common bean seed moisture...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dielectric properties; Grain drying; Bulk density; Automatic control.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600002
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Moisture dependent thermal properties of ground flaxseed (Linum usitatissimum) CIGR Journal
Singh, Ajit Kumar.
The thermal properties of flours have been extensively used as engineering parameter in the design of processes and equipment to handle, transport, storage purpose and for protection of quality of technological process by processing to final products. The thermal properties of ground flaxseed (Linum usitatissimum) were investigated as a function of moisture content in the range of 4.82%-29.32% dry basis (d.b.) at six moisture levels, using a KD2 Pro Thermal Properties Analyzer. As the moisture content of ground flaxseed increased from 4.82 to 29.32 (% d.b.), the thermal conductivity, specific heat and thermal diffusivity increased from 0.122 to 0.184 W m-1 K-1, 2.94 to 5.64 kJ kg-1 K-1, and 6.42×10-8 to 8.11×10-8 m2/s, respectively. Ground flaxseed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ground flaxseed; Thermal properties; Bulk density; Thermal conductivity; Specific heat; Thermal diffusivity.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3330
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Physical and hydraulic properties of aridisols as affected by nutrient and crop-residue management in a cotton-wheat system - doi: 10.4025/actasciagron.v35i1.14683 Agronomy
Mahmood-ul-Hassan, Muhammad; National Agricultural Research Centre; rafique, Eajaz; National Agricultural Research Centre; Rashid, Abdul; National Agricultural Research Centre.
A 5-year cotton–wheat rotation field experiment was conducted on two alkaline-calcareous soils to investigate the impact of integrated nutrient-management and crop-residue incorporation on soil physical and hydrological properties. The nutrient treatments were: T1–farmers' fertilizer use; T2–balanced nutrient management (recommended N, P, Zn. and B from mineral sources); T3–integrated nutrient management, same as T2, except that 75% N was applied from fertilizer and 25% as FYM; and T4 same as T2, except that every alternate year, wheat was substituted by Berseem green manure. All treatments were compared with and without crop residue incorporation. Soil organic matter (SOM) content in both the soils was significantly increased with T2, T3 and T4 as...
Palavras-chave: Cotton-wheat system; Crop-residue recycling; Integrated nutrient management; Bulk density; Water stable aggregate; Hydraulic conductivity.
Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/14683
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Physical attributes of Cambisol in apple ( Malus domestica Borkh. cv. Gala) orchard under different weed management systems in Urubici- Santa Catarina, Brazil Acta Agron. (Palmira)
Schmitz,Daniela; Loss,Arcângelo; Oliveira,Bruno Salvador; Lovato,Paulo Emilio; Veiga,Milton da; Brunetto,Gustavo; Curmi,Pierre; Comin,Jucinei José.
Abstract The aim of this research was to evaluate the physical attributes of Cambisol in apple (Malus domestica Borkh. cv. Gala) orchard under different weed management systems in the state of Santa Catarina (SC), Brazil. The treatments were as follows: control (no weed management), chemical desiccation and mowing. We took samples of undisturbed soil at depths of 0-5, 5-10, 10-15 and 15-20 cm. We evaluated hydraulic conductivity (HC); bulk density (BD); soil penetration resistance (Pr); total porosity (TP), macropores (MaP), micropores (MiP); soil aggregation indices such as arithmetic and geometric mean diameter of air-dried and water-stable aggregates (AMDad, AMDws, GMDad, GMDws, respectively); aggregate stability index (ASIAMD and ASIGMD) and volumetric...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bulk density; Chemical desiccation and mowing of weeds; Aggregate indices; Penetration resistance; Principal component analysis.
Ano: 2017 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000300414
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Physical attributes of kaolinitic and oxidic oxisols resulting from different usage systems BABT
Centurion,José Frederico; Beutler,Amauri Nelson; Souza,Zigomar Menezes de.
The objective of this study was to assess the physical attributes of a kaolinitic oxisol, medium texture (Haplustox) and an oxidic oxisol, clayey (Eutrustox) under different usage systems, localized in the region of Jaboticabal, SP, Brazil. The usage systems were sugarcane, cotton and forest. Parameters such as soil bulk density, total porosity, macro and microporosity at the depths of 0.0-0.1; 0.1-0.2; 0.2-0.3, and 0.3-0.4 m were evaluated. Haplustox showed greater bulk density and smaller total porosity, macro and microporosity. The usage increased the bulk density in 0.0-0.3 m depth, with greater effects on the kaolinitic oxisol, mainly in 0.1-0.2 m depth in the areas cultivated with sugarcane.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sugarcane; Cotton; Forest; Mineralogy; Porosity; Bulk density.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500007
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Physical characterization of Arabica ground coffee with different roasting degrees Anais da ABC (AABC)
NAKILCIOĞLU-TAŞ,EMINE; ÖTLEŞ,SEMIH.
Abstract: Roasting is a determinative operation on the final quality of coffee. Roasting process causes physical, chemical and sensory changes on coffee. In this study roasting degree effect on physical properties of Arabica fine ground coffee was examined. The bulk properties, particle property, reconstitution properties, moisture content, water activities and color properties were investigated in different roasting degrees of coffee. The results showed that the physical characteristics of coffee samples were influenced by the degree of roast. To have longer shelf life, lower cost and better physical attributes of Arabica fine ground coffee, the roasting process should be kept at a lower degree. At the same time the requests and expectations of customer...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arabica coffee; Bulk density; Flowability; Roasting degree; Water content.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300901
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