Effect of land management and soil texture on seasonal variations in soil microbial biomass in dry tropical agroecosystems in Tanzania

Sugihara, Soh; Funakawa, Shinya; Kilasara, Method; Kosaki, Takashi

doi:10.1016/j.apsoil.2009.10.003

Cited by 62 publications

(29 citation statements)

References 57 publications

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“…SMB estimated from the soil C was increasing in the face of SW doses, following a similar pattern to carbon (C) accumulation over the eight years with SW application in all 18-production cycles of the experimental area. Temperature and nutrients are important factors that can influence soil microbial activity (SUGIHARA et al 2010). Average soil temperature analyzed at the time of collection was 28 ºC.…”

Section: Quantitative Factors (Br Smb and Qco 2 )mentioning

confidence: 99%

LONG-TERM EFFECTS OF SWINE wastewater AND MINERAL FERTILIZER ASSOCIATION ON SOIL MICROBIOTA

et al. 2016

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Swine wastewater (SW) application in agricultural soils may affect its microbial community in a long term. The objective of this study was to evaluate prospective changes in soil bacterial community after eight years continuous application of swine wastewater. The wastewater doses tested were 0; 100; 200 and 300 m 3 ha -1 , being applied from the beginning of the experiment and with or without recommended fertilization. Three soil samples were taken from each plot for determinations of basal respiration, microbial biomass and metabolic quotient. We also performed DGGE analysis and made a correlation between soil chemical conditions and microbial activity. Microbial community underwent significant structural changes from swine wastewater applications. Higher SW doses (200 and 300 m 3 ha -1 ) influenced significantly (p <0.05) and benefitted certain bacteria groups.

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Section: Quantitative Factors (Br Smb and Qco 2 )mentioning

confidence: 99%

LONG-TERM EFFECTS OF SWINE wastewater AND MINERAL FERTILIZER ASSOCIATION ON SOIL MICROBIOTA

et al. 2016

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“…Este índice indica a eficiência da biomassa microbiana em utilizar o C disponível para mineralização (BASTIDA et al, 2008). E, este parâmetro pode ser considerado como índice da atividade microbiana (SUGIHARA et al, 2010). Assim, é um parâmetro que tem sido utilizado como bom indicador de alterações que ocorrem no solo (BALOTA et al, 1998).…”

Section: Biomassa Microbiana E Parâmetros Microbiológicos Do Solounclassified

“…Os teores obtidos estão de acordo com os valores encontrados em outros trabalhos para diferentes culturas e condições climáticas (BALOTA et al, 1998;HAYNES, 2006;HUNGRIA et al, 2009;SILVA et al, 2010;SANTOS, et al, 2012b (BALOTA et al, 1998). Embora seja esperado que a biomassa microbiana seja maior em solo argiloso pela maior retenção da matéria orgânica do solo (SUGIHARA et al, 2010), nossos resultados mostraram que o solo arenoso respondeu mais expressivamente à alteração de manejo da palha. Em solos arenosos a ciclagem da matéria orgânica é maior, devido a não proteção físico da MOS, assim, a entrada de material orgânico neste tipo de solo tende a apresentar respostas mais imediatas.…”

Section: Efeito Da Remoção Da Palha Na Biomassa Microbiana Do Solounclassified

“…Os impactos na estrutura morfológica do solo, que ser como hábitat para a microbiota, causado pelo manejo podem afetar a biomassa microbiana provocada pela exposição da matéria orgânica intra-agregados à oxidação e, consequentemente, a mineralização do nitrogênio (DA SILVA et al, 2014). Os nossos dados confirmam sugerem a importância da manutenção da cobertura de palha na superfície do solo para o controle dos componentes mais lábeis da matéria orgânica do solo (biomassa microbiana e C lábil), cuja imobilização de C e N pode contribuir para melhorar a conservação da fonte de nutrintes para o solo, principalmente para o solo arenoso que retêm menores proporções de C e N residual na biomassa SUGIHARA et al, 2010), podendo favorecer dessa forma a manutenção do bom funcionamento do solo.…”

Section: Efeito Da Remoção Da Palha Na Biomassa Microbiana Do Solounclassified

“…Além do manejo do solo, a comunidade microbiana do solo, assim como, sua atividade estão relacionados com condição climática, localização geográfica, textura do solo, características edáficas e, de fatores químicos como o pH e a aplicação de agroquímicos (FIERER; JACKSON, 2006;LAUBER et al, 2008;ROUSK et al, 2010;SUGIHARA et al, 2010;DA SILVA et al, 2014a;TEDERSOO et al, 2014). Nossos dados confirmam a importância da cobertura da palha para a abundância da microbiota do solo.…”

Section: Efeito Da Remoção Da Palha Na Comunidade Microbiana Do Solounclassified

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Efeito da remoção de quantidades de palha de cana-de-açúcar na biomassa e na comunidade microbiana do solo

Morais¹

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Land Use and Precipitation Affect Organic and Microbial Carbon Stocks and the Specific Metabolic Quotient in Soils of Eleven Ecosystems of Mt. Kilimanjaro, Tanzania

et al. 2015

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Tropical ecosystems are under increasing pressure of land‐use changes, strongly affecting the carbon cycle. Conversion from natural to agri‐cultural ecosystems is often accompanied by a decrease in the stocks of organic and microbial carbon (Corg, Cmic) as well as changes in microbial activity and litter decomposition. Eleven ecosystems along an elevation gradient on the slopes of Mt. Kilimanjaro were used to investigate impacts of land‐use changes on Corg and Cmic stocks as well as the specific metabolic respiration quotient (qsCO2) in surface soils. Six natural, two semi‐natural and three intensively used agricultural ecosystems were investigated on an elevation gradient from 950 to 3,880 m asl. To estimate the effects of precipitation, rainfall regimes of 3·6 and 20·0 mm were simulated. Corg stocks were controlled by water availability, temperature and net primary production. Agricultural management resulted in decreases of Corg and Cmic stocks by 38% and 76%, respectively. In addition, agricultural systems were characterized by low Cmic:Corg ratios, indicating a decline in available substrate. Enhanced land‐use intensity leads to increased qsCO2 (agricultural > semi‐natural > natural). The traditional homegardens stood out as a sustainable land‐use form with high substrate availability and microbial efficiency. Soil CO2 efflux and qsCO2 generally increased with precipitation level. We conclude that soils of Mt. Kilimanjaro's ecosystems are highly sensitive to land‐use changes and are vulnerable to changes in precipitation, especially at low elevations. Even though qsCO2 was measured under different water contents, it can be used as an indicator of ecosystem disturbances caused by land‐use and management practices. Copyright © 2015 John Wiley & Sons, Ltd.

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Effect of land management and soil texture on seasonal variations in soil microbial biomass in dry tropical agroecosystems in Tanzania

Cited by 62 publications

References 57 publications

LONG-TERM EFFECTS OF SWINE wastewater AND MINERAL FERTILIZER ASSOCIATION ON SOIL MICROBIOTA

LONG-TERM EFFECTS OF SWINE wastewater AND MINERAL FERTILIZER ASSOCIATION ON SOIL MICROBIOTA

Efeito da remoção de quantidades de palha de cana-de-açúcar na biomassa e na comunidade microbiana do solo

Land Use and Precipitation Affect Organic and Microbial Carbon Stocks and the Specific Metabolic Quotient in Soils of Eleven Ecosystems of Mt. Kilimanjaro, Tanzania

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