Soil Microbial Community Response to Land Use Change in an Agricultural Landscape of Western Kenya

Bossio, Deborah A.; Girvan, Martina S; Verchot, Louis; Bullimore, Juliet; Borelli, Teresa; Albrecht, Alain; Scow, Kate M.; Ball, Andrew S.; Pretty, Jules; Osborn, A. Mark

doi:10.1007/s00248-003-0209-6

Cited by 217 publications

(130 citation statements)

References 37 publications

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“…Both gram-positive and gramnegative bacteria showed the highest abundance in NV soils and R15 treatments, with the lowest values found in the M24 and RUA treatments (Figure 2). Our results are in agreement with those found by Bossio et al (2005), who reported a greater abundance of microbial lipid groups in native vegetation soils and crop rotation soils compared with those under soybean monoculture. The R15 treatment also revealed the highest values of actinobacteria and arbuscular mycorrhizal-fungi, while the lowest abundance of total fungi was observed in NV, suggesting a change in the microbial population abundance with respect to the other treatments.…”

supporting

confidence: 93%

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Relationship between microbial functions and community structure following agricultural intensification in South American Chaco

Brandan¹,

Huidobro²,

Galván³

et al. 2016

Plant Soil Environ.

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supporting

confidence: 93%

“…Phospholipid fatty acid (PLFA) analysis was carried out as described by Bossio et al (2005). A standard nomenclature was used.…”

Section: Methodsmentioning

confidence: 99%

Relationship between microbial functions and community structure following agricultural intensification in South American Chaco

Brandan¹,

Huidobro²,

Galván³

et al. 2016

Plant Soil Environ.

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“…On the other hand, a 5-year field experiment in western Kenya found that P mic was not influenced by fertilization with TSP (50 kg P ha −1 year −1 ) (Bünemann et al 2004a). Characterization of phosphatase activities in weathered soils under cultivation in East Africa is limited to a few studies and mostly acid phosphomonoesterase activity (Bossio et al 2005;Mukuralinda et al 2011;Radersma and Grierson 2004;Verchot and Borelli 2005). Despite the suppression of expression of phosphatases by P i (Nannipieri et al 2011), TSP fertilization in weathered soils in this region at low (25 kg P ha −1 ) and high (250 kg P ha −1 ) rates did not decrease acid phosphomonoesterase activity (Mukuralinda et al 2011;Radersma and Grierson 2004).…”

Section: Introductionmentioning

confidence: 99%

Biological P cycling is influenced by the form of P fertilizer in an Oxisol

et al. 2017

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Phosphate rock (PR) is an alternative fertilizer to increase the P content of P-deficient weathered soils. We evaluated the effects of fertilizer form on indicators of biological cycling of P using an on-farm trial on a Rhodic Kandiudox in western Kenya. Treatment plots were sampled after 13 cropping seasons of P applications as Minjingu phosphate rock (PR) or as triple super phosphate (TSP) (50 kg P ha −1 season −1 ), as well as a P-unfertilized control (0 kg P ha −1 season −1 ). Soils (0-15 and 15-30 cm) were analyzed for microbial biomass P (P mic ), activities of acid phosphomonoesterase, alkaline phosphomonoesterase, and phosphodiesterase, and sequentially extractable P fractions. P additions as Minjingu PR yielded 299% greater P mic than TSP at 0-15-cm depth despite similar labile P concentrations in the two P fertilization treatments and stimulated activities of acid phosphomonoesterase (+39%). When added in the soluble form of TSP, a greater percentage of total soil P was present in mineral-bound forms (+33% Fe-and Al-associated P). Higher soil pH under Minjingu PR (pH 5.35) versus TSP (pH 5.02) and the P-unfertilized treatment (pH 4.69) at 0-15-cm depth reflected a liming effect of Minjingu PR. The form of P fertilizer can influence biological P cycling in weathered soils, potentially improving P availability under Minjingu PR relative to TSP via enhanced microbial biomass P and enzymatic drivers of P cycling.

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“…Land use conversion, particularly within cropland, is a common occurrence driven by market economy (Houghton et al, 1999). The alteration of land use changes plant species, the associated management strategies and disturbance intensity, and thus strongly influences soil physicochemical properties, soil microbial biomass and community composition (Bossio et al, 2005;Lauber et al, 2008;Nishimura et al, 2008;Wang et al, 2014). However, few studies have been conducted to identify the effects of the changes in plant species and in soil environment.…”

Section: Introductionmentioning

confidence: 99%

Changes of anaerobic to aerobic conditions but not of crop type induced bulk soil microbial community variation in the initial conversion of paddy soils to drained soils

Dai

Yuan

Wang

2016

CATENA

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a b s t r a c t a r t i c l e i n f oSoil microorganisms are the main drivers of all of the biochemical processes that occur in soils. Land-use conversion, a common occurrence driven by market economy, changes plant species and the associated management strategies, thus significantly influences soil microbial communities. However, few studies have been conducted to disentangle the effect of the alteration of plant species from that of soil environment during the initial years of conversion. In this study, the effect of land-use conversion from double rice cropping (RR) to maize-maize (MM) and soybean-peanut (SP) double cropping systems on soil physical and chemical properties and microbial communities was studied two years after the conversion in southern China. The results showed that land use conversion significantly changed the soil properties, microbial communities and microbial biomass. The soil water content decreased significantly by 26.3%, and the pH decreased by 0.50 and 0.52 for MM and SP, respectively, compared with RR. Soil inorganic N also decreased significantly by 55% after the conversion to drained fields. The total phospholipid fatty acids (PLFAs), and bacterial, G+, G− and actinomycetic PLFAs decreased significantly after the conversion. No significant differences were found in the soil properties, microbial communities and microbial biomass between the converted MM and SP. Our results indicated that the changes of anaerobic to aerobic conditions, rather than of crop type, induced the variations in the soil properties and microbial communities during the initial years after conversion from paddy soils to drained soils. In particular, soil pH was the key factor that regulated the variations in the soil microbial communities after conversion.

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Soil Microbial Community Response to Land Use Change in an Agricultural Landscape of Western Kenya

Cited by 217 publications

References 37 publications

Relationship between microbial functions and community structure following agricultural intensification in South American Chaco

Relationship between microbial functions and community structure following agricultural intensification in South American Chaco

Biological P cycling is influenced by the form of P fertilizer in an Oxisol

Changes of anaerobic to aerobic conditions but not of crop type induced bulk soil microbial community variation in the initial conversion of paddy soils to drained soils

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