Ultraviolet absorbance (280nm) of compounds released from soil during chloroform fumigation as an estimate of the microbial biomass

Nunan, Naoise; Morgan, M. A.; Herlihy, M.

doi:10.1016/s0038-0717(97)00226-5

Cited by 129 publications

(65 citation statements)

References 21 publications

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“…Soil MBC was measured using the CHCl 3 fumigation-K 2 SO 4 extraction method (1:4, w/v). The extracts were analyzed at 280 nm using an UV spectrophotometer (Cary 60, Agilent Technologies, Santa Clara, USA) (Nunan et al 1998). Selected physicochemical properties of soil and biochar are shown in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Effects of biochar addition on CO2 and CH4 emissions from a cultivated sandy loam soil during freeze-thaw cycles

Liu¹,

Qi²,

Wang³

et al. 2017

Plant Soil Environ.

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This study was conducted to examine the effects of biochar additions (0, 2 and 4%, w/w) on soil carbon dioxide (CO2) and methane (CH4) emissions during freeze-thaw cycles (FTC). The results showed that soil CO2 emissions were stimulated by both FTC and biochar addition. However, the differences in soil CO2 emissions between control (CK) and FTC treatments were not significant when biochar addition rate was 4%, indicating that high biochar addition rate may have stronger effect on stimulating soil CO2 emissions than FTC. The increased soil dissolved organic carbon content, which attributed to the labile carbon in biochar, was the likely reason for the increased CO2 emissions. The negative CH4 emissions were promoted by biochar, especially under FTC conditions; possibly due to the structure of biochar soil aeration increased, which formed a favourable environment for methanotrophs. The results of this study indicate that biochar additions can increase soil CO2 emissions and CH4 uptakes during FTC, and such effects are different from those under CK conditions.

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Section: Methodsmentioning

confidence: 99%

Effects of biochar addition on CO2 and CH4 emissions from a cultivated sandy loam soil during freeze-thaw cycles

Liu¹,

Qi²,

Wang³

et al. 2017

Plant Soil Environ.

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“…Microbial biomass C and available P Microbial biomass C was estimated by the method of Nunan et al (1998), using aliquots of potassium sulfate (K 2 SO 4 ) extracts through dichromate digestion. Microbial biomass C was calculated after back titration with ferrous ammonium sulphate and calculated using the equation:…”

mentioning

confidence: 99%

Enhancing micronutrient uptake and yield of wheat through bacterial PGPR consortia

Rana

Saharan

Nain

et al. 2012

Soil Science and Plant Nutrition

131

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A pot experiment was undertaken under net house conditions, with three rhizobacterial strains AW1 (Bacillus sp.), AW5 (Providencia sp.) and AW7 (Brevundimonas sp.), applied along with 2/3 recommended dose of nitrogen (N) and full dose of phosphorus (P) and potassium (K) fertilizers (N 90 P 60 K 60 ). An enhancement of 14-34% in plant biometric parameters and 28-60% in micronutrient content was recorded in treatments receiving the combination of AW1 þ AW5 strains, as compared to full dose of fertilizer application. The treatment involving inoculation with AW5 þ AW7 recorded highest values of % P and N, with a two-fold enhancement in phosphorus and 66.7% increase in N content, over full dose application of P and K fertilizers. A significant correlation was recorded between plant biomass, panicle weight, grain weight, N, P and iron (Fe) with acetylene reduction activity, indicating the significance of N fixation in overall crop productivity. Our study illustrates the multiple benefits of plant growth promoting rhizobacteria (PGPR) inoculation in integrated nutrient management and biofortification strategies for wheat crop.

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“…The procedure given by Casida et al, (1964) was used for estimation of dehydrogenase activity. Microbial biomass carbon in soil samples was estimated by the method described by Nunan et al, (1998).…”

Section: Methodsmentioning

confidence: 99%

Effect of Tillage, Crop Residues and Nitrogen Management Practices on Growth Performance and Soil Microbial Parameters in Wheat

Ronanki¹,

Behera²

2018

Int.J.Curr.Microbiol.App.Sci

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Ultraviolet absorbance (280nm) of compounds released from soil during chloroform fumigation as an estimate of the microbial biomass

Cited by 129 publications

References 21 publications

Effects of biochar addition on CO2 and CH4 emissions from a cultivated sandy loam soil during freeze-thaw cycles

Effects of biochar addition on CO2 and CH4 emissions from a cultivated sandy loam soil during freeze-thaw cycles

Enhancing micronutrient uptake and yield of wheat through bacterial PGPR consortia

Effect of Tillage, Crop Residues and Nitrogen Management Practices on Growth Performance and Soil Microbial Parameters in Wheat

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