Soil enzymes and microbial elemental stoichiometry as bio-indicators of soil quality in diverse cropping systems and nutrient management practices of Indian Vertisols

Ghosh, Avijit; Singh, Amar; Kumar, Ravendra; Manna, M. C.; Bhattacharyya, Ranjan; Rahman, Mohammad Mahmudur; Sharma, Poonam; Rajput, Poonam Singh; Misra, Sukanya

doi:10.1016/j.apsoil.2019.06.007

Cited by 77 publications

(33 citation statements)

References 42 publications

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“…Additionally, the highest phosphatase activity found after compost addition can be related to the highest SOM: several studies found a positive correlation between soil organic carbon and phosphatase activity [57,58]. A similar scenario was observed for β-glucosidase activity, in compost amended soils.…”

Section: Discussionsupporting

confidence: 58%

Compost and Sewage Sludge for the Improvement of Soil Chemical and Biological Quality of Mediterranean Agroecosystems

Picariello

Pucci²,

Carotenuto

et al. 2020

Sustainability

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Conventional fertilization practices in agroecosystems concern the supply of bioavailable nutrients, such as mineral fertilizers. A consolidated alternative to restoring the long-term fertility of agricultural soils is their amendment with organic fertilizers. Soil amendment with biowaste compost or sewage sludge represents a sustainable strategy to avoid the landfilling of organic matter derived from urban waste and sewage sludge. This study aims at validating the use of quality biowaste compost and sewage sludge from secondary sedimentation (alone or in combination with mineral fertilizers) in a Mediterranean agroecosystem and their effects on soil chemical and biological quality, with a view to verifying the maintenance of soil fertility and functionality. In particular, the dynamics of soil organic matter, pH, potentially toxic elements and microbial community functionality were assessed, in experimental mesocosms, during 6 months of incubation. The research showed that, while soil amendment with biowaste compost induces positive effects on soil organic matter and phosphorous concentrations, as well as on microbial community functionality, the amendment with the selected sewage sludge does not determine any benefit to the microbial community or any danger in relation to soil potentially toxic element concentrations and toxicity. The quantity of sewage sludge employed, chosen according to regional directives, was thus not enough to stimulate the edaphic microflora activity.

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Section: Discussionsupporting

confidence: 58%

Compost and Sewage Sludge for the Improvement of Soil Chemical and Biological Quality of Mediterranean Agroecosystems

Picariello

Pucci²,

Carotenuto

et al. 2020

Sustainability

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“…Activities of extracellular soil enzymes degrade SOM and produce polysaccharides, monosaccharides and other glue‐like substances that assist in binding free soil particles, microaggregates to form small macroaggregates (Ghosh, Bhattacharyya, Meena, et al., 2018; Ghosh et al., 2019). Binding of microaggregates results in declining their proportion but improves the proportion of small macroaggregates.…”

Section: Discussionmentioning

confidence: 99%

“…Yield stability and carbon sequestration of agricultural systems are indicators of eco‐friendly agricultural growth (Ghosh et al., 2004). These parameters are simultaneously controlled by soil physical processes such as aggregation (Bhattacharyya et al., 2012), chemical constituents such as SOC pools, lignin and cellulose (Ghosh et al., 2016) and biological components such as soil enzymes (Ghosh et al., 2019). Soil organic carbon (SOC) sequestration is governed by complex processes of CO 2 emissions, soil structure formation and the microbial activities (Lal, 2015).…”

Section: Introductionmentioning

confidence: 99%

Long‐term manure application for crop yield stability and carbon sequestration in subtropical region

Wankhede

Dakhli

Manna

et al. 2021

Soil Use and Management

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Yield stability and carbon sequestration of agricultural systems are impacted by nutrient management strategies. Major objectives of this study were to understand the effects of long-term (43 years) manure application on a) environmental parameters such as soil organic carbon (SOC) sequestration, enzyme activities in surface and subsurface layers, and b) yield, and yield stability under a soybean-wheat cropping system in a Vertisol. For this, 100% recommended dose of nitrogen (N), N and phosphorus (NP), N, P and potassium (NPK), NPK + farmyard manure (NPKM) was compared with an unfertilized control (UC) and a fallow land. After 43 years, NPKM and NPK plots had ∼63 and 30% higher total SOC stock than UC, and 45 and 17% higher total SOC stock than fallow plots, respectively in the 0-30 cm layer. Acid hydrolysable C was ~ 42 and 57% higher for NPKM plots in those layers respectively than fallow land. The proportion of macroaggregates was less than 30% in both soil layers of cultivated plots. NPKM had 44 and 28% greater humic and fulvic acidassociated C than fallow land in top layer. Enzyme activities improved in NPKM by ~ 60 and 61% as compared with fallow land. A steady decline in soybean productivity over the years might be due to residue effect. However, wheat yield increased steadily with manuring. Higher SOC accumulation (p < .001), greater enzyme activities (p < .05), improved structure (p < .05) could enhance wheat yield under NPKM. Thus, manure application could lead to yield stability and enhance SOC sequestration in subtropical region simultaneously.

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“…These microbes release a palette of enzymes such as invertase, phosphatase, sulphatase and β‐glucosidase, which are the fundamental attributes of productive soil and largely contribute to soil fertility, thereby enhancing plant health and crop productivity (Ghosh et al . 2020). Soil microbial enzymatic activity is strongly influenced by soil characteristics and agriculture practices.…”

Section: Introductionmentioning

confidence: 99%

Bacillus subtilisCP4, isolated from native soil in combination with arbuscular mycorrhizal fungi promotes biofortification, yield and metabolite production in wheat under field conditions

Yadav

Ror

Rathore

et al. 2020

J. Appl. Microbiol.

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Aims The aim of this study was to identify the best combination of plant growth promoting bacteria (PGPB) and arbuscular mycorrhizal fungi (AMF) for biofortification and enhancing yield in wheat as well as improve soil health under field conditions. Another aim was to get insights into metabolite dynamics in plants treated with PGPB and AMF. Methods and Results Different combinations of PGPB and AMF that gave good results in greenhouse study were used in a field study. The combined application of Bacillus subtilis CP4 (native PGPB) and AMF gave the best results with a significant increase in biomass, macronutrient and micronutrient content in wheat grains and improvement in yield‐related parameters relative to the untreated control. PGPB and AMF treatment increased antioxidant enzymes and compounds and decreased the level of an oxidation marker. Metabolite profiling performed using Gas Chromatography–Mass Spectrometry (GC‐MS) showed significant upregulation of specific organic acids, amino acids, sugars and sugar alcohols in plants treated with CP4 and AMF. The altered pathways due to CP4 and AMF inoculation mainly belong to carbohydrate and amino acid metabolism. A positive correlation was observed between some organic acids, sugars and amino acids with wheat growth and yield parameters. The activities of soil enzymes increased significantly with the best results shown by native PGPB and AMF combination. Conclusions A native bacterial isolate Bacillus subtilis CP4 in combination with AMF showed exceptional ability for biofortification and yield enhancement under field conditions. The upregulation of a number of metabolites showed correlation plant growth promotion and nutrients. Significance and Impact of the Study The combined application of native B. subtilis CP4 and AMF could offer a more sustainable approach for the development of a biofertilizer to enhance wheat nutrient content and production and soil health thereby advancing agriculture.

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Soil enzymes and microbial elemental stoichiometry as bio-indicators of soil quality in diverse cropping systems and nutrient management practices of Indian Vertisols

Cited by 77 publications

References 42 publications

Compost and Sewage Sludge for the Improvement of Soil Chemical and Biological Quality of Mediterranean Agroecosystems

Compost and Sewage Sludge for the Improvement of Soil Chemical and Biological Quality of Mediterranean Agroecosystems

Long‐term manure application for crop yield stability and carbon sequestration in subtropical region

Bacillus subtilisCP4, isolated from native soil in combination with arbuscular mycorrhizal fungi promotes biofortification, yield and metabolite production in wheat under field conditions

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