Soil compactibility as affected by soil moisture content and farmyard manure in central Iran

Mosaddeghi, Mohammad Reza; Hajabbasi, Mohammad Ali; Hemmat, Abbas; Afyuni, Majid

doi:10.1016/s0167-1987(00)00102-1

Cited by 111 publications

(68 citation statements)

References 23 publications

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“…This finding is in agreement with findings of Jaiyeoba [28]. The higher sand fraction on CBCTS was due to selective removal of clay fraction by erosion [29][30][31][32][33][34]. Since the area is endowed with higher amount of rain fall, surface erosion is common.…”

Section: Soil Physical Propertiessupporting

confidence: 88%

“…A higher SMC (%) was observed under EBCSTS than CBCVTS land use types. This was due to the presence of higher SOC (%) and hence formation of stable soil aggregate in EBCSTS [4,6,29,36,43]. Concurrently, higher SMC (%) was observed at 15-30 cm across land use types (Table 3).…”

Section: Soil Physical Propertiesmentioning

confidence: 99%

“…In CBCVTS, the continuous tillage operation and thereby lowering of soil organic carbon (SOC) might have contributed for increased soil bulk density [6,13,29,31,[37][38][39][40]. With respect to soil depth, the weight of overlying soil and the availability of less soil aggregates have increased the soil bulk density on both land use types [13,29,41,42].…”

Section: Soil Physical Propertiesmentioning

confidence: 99%

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Soil Quality Variation under Enset based Conservation Tillage and Cereal based Conventional Tillage System in Southern Highlands of Ethiopia

Ketema¹

2015

APAR

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With the objectives of assessing the variation of soil quality indicators; two land use types: Enset based conservation tillage system (EBCSTS) and Cereal based conventional tillage system (CBCVTS) were selected in Gedeo zone, Bule woreda, Southern Ethiopia. A total of 48 composite and undisturbed (for bulk density determination) soil samples (2 land use types_4 blocks_3 replication_2 soil depth: 0-15 cm and 15-30 cm) were collected for laboratory analysis. The result showed that soil textural fractions (sand, p<0.001; silt, p = 0.003 and clay = p = 0.001) and soil pH (p<0.001) significantly varied with land use types. Moreover, soil moisture content (p<0.001), bulk density (p = 0.016, p = 0.002), SOC (p<0.001), TN (p<0.001) and CEC (p<0.001, p = 0.001) have shown significant variation with land use types and soil depth respectively. Sand and clay were higher in EBCSTS and CBCVTS, respectively. Higher amount of sand fraction was observed under 0-15 cm on EBCSTS and 15-30 cm on CBCVTS land use types. Lower soil bulk density (g cm -3 ) and higher amount of SOC (%), TN (%), soil pH, CEC (meq/100g soil) and SMC (%) were observed at 0-15 cm soil layer under the EBCSTS. Soil bulk density (g cm -3 ), soil pH and SMC (%) increased while SOC (%), CEC (meq/100g soil) and TN (%) decreased with soil depth in both land use types. Improvement in the soil quality under EBCSTS was due to the presence of less soil disturbance coupled with higher addition of organic matter (SOM) in the soil. Thus, through implementing EBCSTS, it is possible to protect and maintain soil qualities for sustainable soil management and cropping practices in the area.

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Section: Soil Physical Propertiessupporting

confidence: 88%

Section: Soil Physical Propertiesmentioning

confidence: 99%

Section: Soil Physical Propertiesmentioning

confidence: 99%

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Soil Quality Variation under Enset based Conservation Tillage and Cereal based Conventional Tillage System in Southern Highlands of Ethiopia

Ketema¹

2015

APAR

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“…A tensão de preconsolidação é obtida a partir de uma curva de compressão que representa graficamente a relação entre o logaritmo da tensão vertical aplicada ao solo a parâmetros relacionados com a estrutura do solo, tais como índice de vazios, porosidade ou densidade do solo, obtida a partir de um ensaio de compressão uniaxial (Mosaddeghi et al, 2000.;Macedo et al, 2010b).…”

Section: Introductionunclassified

Compressibilidade de um Argissolo Amarelo distrocoeso submetido a diferentes manejos

Oliveira

Rolim

Costa³

et al. 2011

Rev. bras. eng. agríc. ambient.

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O objetivo deste trabalho foi avaliar a compressibilidade de um Argissolo Amarelo distrocoeso submetido a diferentes sistemas de manejo sob cultivo de cana-de-açúcar. O experimento foi realizado em áreas da Usina Triunfo Industrial, AL, onde se avaliaram os manejos: MA - mata nativa; MSI - manejo sem irrigação; MCI - manejo com irrigação e MCV - manejo com fertirrigação (vinhaça). Todas as áreas estudadas, exceto no MA, vêm utilizando o preparo convencional do solo com uso de grades pesadas. As amostras de solo foram coletadas nas profundidades de 0-20 e 20-40 cm. Trincheiras foram abertas nas quatro áreas de manejo em estudo, quando amostras de solo indeformadas foram retiradas com auxílio de aneis metálicos de 6,4 cm diâmetro e 2,5 cm de altura em cada profundidade. Após coletadas, as amostras foram saturadas e submetidas a sucções de 0,1 a 10 kPa; 50, 500 e 1500 kPa, levadas à prensa mecânica e realizado o ensaio de compressibilidade. A partir dos dados obtidos determinou-se a tensão de preconsolidação (σp) das diversas amostras ensaiadas, cujos resultados foram submetidos à análise de regressão para a variável tensão de preconsolidação, em função da sucção matricial do solo. Em todos os manejos, a profundidade de 0-20 cm mostrou ser a mais susceptível à compactação em relação à profundidade de 20-40 cm; o manejo MCV alterou o comportamento compressivo do solo em ambas as profundidades (0-20 e 20-40 cm) e a capacidade de suporte do solo foi maior em todos os manejos, nas camadas de 20-40 cm.

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“…A umidade é o fator mais importante na determinação da magnitude de deformação que pode ocorrer no solo quando determinada pressão é aplicada (MOSADDEGHI et al, 2000). O pastejo em condições de umidade, dependendo da textura do solo e topografia do terreno, pode intensificar a degradação física de um determinado solo.…”

Section: Umidade Do Solounclassified

A review of the impacts of livestock on the ground in natural pastures

Silva¹,

Carneiro²,

Cândido³

et al. 2015

Pubvet

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ResumoO impacto dos sistemas de pastejo sobre as propriedades físicas do solo tem sido subestimado por parte de técnicos e produtores. Havendo a necessidade de maiores informações sobre o manejo e a conservação dos solos das áreas sob pastagens no Brasil. Assim, o objetivo desta revisão é discutir o impacto SILVA, G.L.S. et al. Uma análise sobre os impactos dos rebanhos sobre o solo nas pastagens naturais. PUBVET, Londrina, V. 8, N. 11, Ed. 260, Art. 1723, Junho, 2014 dos rebanhos sobre o solo em pastagens naturais e suas respectivas consequências ao ambiente.Palavras-chave: ciclagem de nutrientes, compactação do solo, textura do solo, umidade do solo A review of the impacts of livestock on the ground in natural pastures AbstractThe impact of grazing systems on soil physical properties, has been underestimated by technicians and producers. If there is a need for more information on the management and conservation of soils in pasture areas in Brazil. The objective of this review is to discuss the impact of livestock on the ground in grasslands and their consequences to the environment.

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Soil compactibility as affected by soil moisture content and farmyard manure in central Iran

Cited by 111 publications

References 23 publications

Soil Quality Variation under Enset based Conservation Tillage and Cereal based Conventional Tillage System in Southern Highlands of Ethiopia

Soil Quality Variation under Enset based Conservation Tillage and Cereal based Conventional Tillage System in Southern Highlands of Ethiopia

Compressibilidade de um Argissolo Amarelo distrocoeso submetido a diferentes manejos

A review of the impacts of livestock on the ground in natural pastures

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