Microbial biomass turnover and enzyme activities following the application of farmyard manure to field soils with and without previous long-term applications

Goyal, Sneh; Mishra, M.M.; Dhankar, S. S.; Kapoor, K. K.; Batra, Renu

doi:10.1007/bf00336290

Cited by 110 publications

(43 citation statements)

References 19 publications

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“…Although Perucci (1992) did not discuss his results in that perspective, it appears from his data that soil microbial biomass increased linearly with the amount of municipal refuse compost are applied, whereas the response of FDA-hydrolysis and phosphatase activity tended to level off at higher rates. A similar phenomenon was also reported by Goyal et al (1993) when amending the soil with farmyard manure at rates of 15 to 90 Mg ha -1 . Given the large amounts of C added to the soil in our study and in previous studies, it appears that the metabolic capacity of soil enzyme was likely saturated or even hindered by excess available C. In our case, however, the large C to N ratio of DPS likely induced a net N immobilization during the initial phase of decomposition (Fierro et al 1997(Fierro et al , 1999b, which likely interfered with microbial growth and activity as the rate of DPS amendment increased.…”

Section: Impact Of De-inking Paper Sludge On Enzyme Activitysupporting

confidence: 84%

Active carbon pools and enzyme activities in soils amended with de-inking paper sludge

Chantigny¹,

Angers²,

Beauchamp³

2000

Can. J. Soil. Sci.

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. 2000. Active carbon pools and enzyme activities in soils amended with de-inking paper sludge. Can. J. Soil Sci. 80: 99-105. Application of paper mill wastes generally improves soil organic matter content, biological activity and physical properties. However, the impact of large application rates (>50 Mg ha -1 ) on soil microflora and their activity has not been assessed. A field study was undertaken on a well-drained clay loam and a poorly drained silty clay loam amended with de-inking paper sludge (DPS) at rates of 0 (control), 50 or 100 Mg ha -1 . K 2 SO 4 -extractable C (C ext ), soil water content (SWC), microbial biomass C (MBC) and different enzyme activity rates were periodically measured in soil during 1075 d following DPS incorporation. Compared with control soils, C ext content increased by 100 to 200%, and soil water content increased by 35% following incorporation of DPS at 100 Mg ha -1 . Those differences decreased in time as DPS decomposed. Soil MBC increased proportionally with the rate of DPS amendment and was about twice the amount in soils amended with 100 Mg ha -1 compared with the control. Microbial quotient (ratio of MBC to total soil organic C) was greater in DPS-amended than in control soils until day 370, reflecting the input of labile C from DPS. Compared with the control, fluorescein diacetate hydrolysis and alkaline phosphatase activity rates increased by 40 to 100% when adding 50 Mg DPS ha -1 . However, the rates were similar for 50 and 100 Mg DPS ha -1 . We concluded that DPS promoted microbial growth and activity in the soil by improving C and water availability. However, levelling off of enzyme activity at a DPS loading rate above 50 Mg ha -1 could reflect changes in soil microbial community, or some kinetic interference or nutrient deficiency induced by excessive C input. . L'utilisation de résidus de papier peut amélior-er la teneur en matière organique, l'activité biologique et les propriétés physiques du sol. Toutefois, l'impact de doses élevées (> 50 Mg ha -1 ) sur la microflore du sol et ses activités n'a pas été étudiée. Une étude de champ s'est déroulée sur un loam argileux bien drainé et un loam limono-argileux mal drainé amendés avec 0 (témoin) 50 ou 100 Mg ha -1 de résidus de désencrage du papier (RDP). Le C extractible au K 2 SO 4 (C ext ), la teneur en eau, le C de la biomasse microbienne (CBM) et différentes activités enzymatiques ont été suivies pendant 1075 jours suivant l'incorporation des RDP. Les teneurs en C ext ont augmenté de 100 à 200 %, alors que la teneur en eau a augmenté de 35 % suite à l'ajout de 100 Mg ha -1 de RDP. Ces augmentations ont graduellement disparues à mesure que les RDP se sont décomposés. Le CBM a augmenté de façon proportionnelle à la dose de RDP et était deux fois plus élevé dans le sol amendé avec 100 Mg ha -1 que dans le sol témoin. Le quotient microbien (rapport CBM sur C organique total) a été plus élevé dans les sols avec RDP que dans les sols témoins jusqu'au jour 370, ce qui reflète l'apport de C disponible provenant des RDP. Les...

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Section: Impact Of De-inking Paper Sludge On Enzyme Activitysupporting

confidence: 84%

Active carbon pools and enzyme activities in soils amended with de-inking paper sludge

Chantigny¹,

Angers²,

Beauchamp³

2000

Can. J. Soil. Sci.

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“…Such higher amount observed within a short span of 24 days is, however, typical in soils of tropical and subtropical regions, where the organic matter turnover rates have been reported to be higher (Goyal et al 1993;Rudrappa et al 2005;Mandal et al 2007). A higher proportion in NPK+FYM (14.5%) and fallow (16.0%) treatments (Table 5) vis-à-vis others indicated a higher activity of microorganisms in soils under these two treatments.…”

Section: Mineralizable C and Soil Respirationmentioning

confidence: 63%

Soil organic carbon pools and productivity relationships for a 34 year old rice–wheat–jute agroecosystem under different fertilizer treatments

et al. 2007

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Soil organic carbon (SOC) pools are important in maintaining soil productivity and influencing the CO 2 loading into the atmosphere. An attempt is made here to investigate into the dynamics of pools of SOC viz., total organic carbon (C tot ), oxidisable organic carbon (C oc ) and its four different fractions such as very labile (C frac 1 ), labile (C frac 2 ), less labile (C frac 3 ) and non-labile (C frac 4 ), microbial biomass carbon (C mic ), mineralizable carbon (C min ), and particulate organic carbon (C p ) in relation to crop productivity using a 34 year old rice (Oryza sativa L)-wheat (Triticum aestivum L)-jute (Corchorus olitorius L) cropping system with different management strategies (no fertilization, only N, NP, NPK and NPK+ FYM) in the hot humid, subtropics of India. A fallow treatment was also included to compare the impact of cultivation vis-à-vis no cultivation. Cultivation over the years caused a net decrease, while balanced fertilization with NPK maintained the SOC pools at par with the fallow. Only 22% of the C applied as FYM was stabilized into SOC, while the rest got lost. Of the analysed pools, C frac 1 , C mic , C p and C min were influenced most by the treatments imposed. Most of the labile pools were significantly correlated with each other and with the yield and sustainable yield index (SYI) of the studied system. Of them, C frac1 , C min , C mic and C p explained higher per cent variability in the SYI and yield of the crops. Results suggest that because of low cost and ease of estimation and also for upkeeping environmental conditions, C frac1 may be used as a good indicator for assessment of soil as to its crop productivity.

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“…DHA significantly increased during the development of mycorrhizal soil at different time intervals (fig 4). DHA can correlate with changes in the microbial biomass due to long-term soil amendment [Goyal et al, 1993]. The importance of soil microorganisms in the present study has been evaluated taking into account viable counts and activity of soil microorganisms (DHA).…”

Section: Enzymatic Results and Viable Plate Countsmentioning

confidence: 99%

Mycorrhizosphere development and management: The role of nutrients, micro-organisms and bio-chemical activities

Dubey¹,

Fulekar²

2011

ABJNA

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The selection of pollutant tolerant plant, rhizosphere process and their proper management and establishment is crucial for successful phytoremediation experiment. To carry out rhizospheric bioremediation studies under the influence of mycorrhiza for the better survival of the plants, a cost effective method for the mass production of mycorrhizal inoculum is prerequisite. In the present research study, soil based mycorrhizal inoculum has been developed using Sorghum as a host plant in green house for a period of 75 days using pot culture technique. The physicochemical characteristics, mycorrhizal status, Acid phosphatase activity (ACP), alkaline phosphatase activity (ALP), dehydrogenase activity (DHA) along with the number and diversity of bacteria, fungi and actinomycetes were assessed at a frequency of 15 days in the rhizospheric soil samples. Development of mycorrhizae was characterized by AM spore count and colonized root length percentage (%CRL) in Sorghum. Our data showed that soil nitrogen (N), organic carbon (C), organic phosphorus (Po), C/N and N/P ratio significantly increased with an increase in spore count and AM colonization. ACP, ALP and microbial activity (as represented by viable counts and DHA) were also found to be increasing during the process of mycorrhiza development. Thus developing mycorrhizae induce a series of changes in nutrient availability, microbial composition and enzymatic activities in the soil that may determine the outcome of a phytoremediation attempt. Developed mycorrhizal inoculum in the present study can contribute in establishing an effective mycorrhizosphere that can provide the environment for enhanced degradation of pollutants present in the soil.

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Microbial biomass turnover and enzyme activities following the application of farmyard manure to field soils with and without previous long-term applications

Cited by 110 publications

References 19 publications

Active carbon pools and enzyme activities in soils amended with de-inking paper sludge

Active carbon pools and enzyme activities in soils amended with de-inking paper sludge

Soil organic carbon pools and productivity relationships for a 34 year old rice–wheat–jute agroecosystem under different fertilizer treatments

Mycorrhizosphere development and management: The role of nutrients, micro-organisms and bio-chemical activities

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