Azolla pinnata, Aspergillus terreus and Eisenia fetida for enhancing agronomic value of paddy straw

Arora, Manveen; Kaur, Arvinder

doi:10.1038/s41598-018-37880-1

Cited by 20 publications

(20 citation statements)

References 58 publications

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“…Consequently, the pH of final vermicompost tended toward neutral range. In the present study, lowering of pH during vermicomposting process assisted to conserve nitrogen in final vermicompost (Sharma and Garg, 2017;Arora and Kaur, 2019). The electrical conductivity (EC) increased significantly (ANOVA; F=4,725, p<0.001) from 1.27 to 2.79 mS cm-1 in initial substrate and final vermicompost, respectively.…”

Section: 1changes In Physico-chemical Propertiesmentioning

confidence: 57%

“…The moisture level was maintained by spraying water during this period. Pre-decomposition was performed to attain thermal stability and the removal of volatile toxic substances (Srivastava et al, 2015;Arora and Kaur, 2019;Sharma and Garg, 2019). Also, it helps in making the substrate material palatable to the earthworms and breaking oily and fatty substances in the feed material prior to the earthworm inoculation (Sharma and Garg, 2019).…”

Section: Experimental Setup Vermicomposting Of Municipal Solid Wastementioning

confidence: 99%

“…Earlier studies on vermi-stabilization of different organic wastes focused on changes in physico-chemical properties Hussain et al, 2016;Arora and Kaur, 2019), enzyme dynamics (Yadav et al, 2015;Villar et al, 2016;Sudkolai and Nourbakhsh, 2017) and evaluation of vermicompost as soil organic amendments ( Lakhdar et al, 2012;Weber et al, 2014;Srivastava et al, 2018). To date very limited studies are present which include both traditional and advance techniques to evaluate stability and maturity of organic waste through vermicomposting.…”

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confidence: 99%

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Analysis and advanced characterization of municipal solid waste vermicompost maturity for a green environment

Srivastava

Goel

Thakur

et al. 2020

Journal of Environmental Management

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Rapid demographic expansion along with increasing urbanization has aggravated the problem of solid waste management. Therefore, scientists are seeking waste management methods that are eco-friendly, cost effective and produce immediate results. In the developing world, municipal solid waste (MSW) contains mostly organic substances, therefore vermicomposting could be a better and cost-effective option for waste management. In this study, vermicomposting of organic portion of MSW with cow dung (additive) was performed using Eisenia fetida. The results showed significant (p<0.001) decline in pH (13.17%), TOC (21.70%), C: N (62.53%) and C: P (57.66%) ratios, whilst total N (108.9%), P (84.89%) and K (21.85%) content increased (p<0.001) in matured vermicompost. Different enzymatic activities declined during termination phase of vermicomposting experiments with maximum decrease of 41.72 (p=0.002) and 39.56% (p=0.001) in protease and β-glucosidase, respectively. FT-IR, TGA, DSC and SEM studies suggested that final vermicompost was more stabilized as compared to initial waste mixture, characterized by reduced levels of aliphatic materials, carbohydrates and increase in aromatic groups possibly due to biosynthesis of humic substances. Both, the conventional (physicochemical and enzyme activity) and advanced techniques depict maturity and stability of the ready vermicompost. However, FT-IR, TGA, DSC and SEM were proved to be more promising, fast and reliable techniques over conventional analyses.

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Section: 1changes In Physico-chemical Propertiesmentioning

confidence: 57%

Section: Experimental Setup Vermicomposting Of Municipal Solid Wastementioning

confidence: 99%

mentioning

confidence: 99%

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Analysis and advanced characterization of municipal solid waste vermicompost maturity for a green environment

Srivastava

Goel

Thakur

et al. 2020

Journal of Environmental Management

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“…Earthworms kept in media Nelumbo leaves for 30 days showed increased body weight and produced relatively more cocoons [7]. Recycling of aquatic weeds can solve disposal issues [8]), and enhances their agronomic value with the building up of earthworms (biomass, hatchlings, and cocoons) [9]. Traditionally, cow manure is regarded as an important resource for sustainable rural agriculture [10,11] and a primary substrate for vermicomposting [12,13].…”

Section: Introductionmentioning

confidence: 99%

Unveiling the Efficiency of Psychrophillic Aporrectodea caliginosa in Deciphering the Nutrients from Dalweed and Cow Manure with Bio-Optimization of Coprolites

et al. 2021

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There is an immense demand for vermicomposting employing psychrophilic vermiculture (Aporrectodea caliginosa) for management of wastes under the Himalayan ecosystem. Dalweed (weeds from the world-famous urban Dal Lake) and cow manure (CM) are cheaply and abundantly available bio resources in Kashmir valley. Dalweed (DW), disposed of in the heart of the city, ascribes unpleasant effects on tourism and the natural ecosystem. Initial substrate mixtures of DW and CM with different ratios (CM100, DW100, CM80:DW20, CM60:DW40, CM40:DW60 and CM20:DW80) and castings harvested were analyzed for the following parameters: pH, TOC, TN, NO3- P, K, Fe, Zn, C:N, C:P, and C:S ratio. The results of a 56day study revealed in consistency and disparity towards the bio-optimization of coprolites depending upon the type of waste residue and mixture ratio used. Treatments with medium to low dalweed residues (CM60:DW40 followed by CM80:DW20) were found to be optimum and significantly primed chemical properties of castings using A. caligenosa. C:N, C:P, and C:S ratios showed a non-linear response with maximum decrease in C:N ratio by 35%, C:P ratio by 38% in CM100, and C:S ratio by 67% in DW100. Humification ratio, humification index, and percent humic acids were changed across all the treatments with the highest respective values of 21.33 ± 1.05, 11.33 ± 0.76, and 47.83 ± 0.76 for CM60:DW40. Results also showed that the earthworm population and biomass significantly increased with the highest respective increments of 57.53% and 74.88% in CM60:DW40 over initial values. Moreover, the highest number of cocoons (95.67 ± 1.17) were recorded within CM60:DW40 and the lowest in the control (43.33 ± 1.53). Dehydrogenase and fluorescein diacetate activities were inconsistent with the highest in CM40:DW60 (64.64%) and CM20:DW80 (63.54%) respectively over the initial substrates, while highest urease activity (74.40%) was observed from CM100. The results highlight the role of A. caliginosa in sustainable transformation of CM and DW with insightful, beneficial, and priming impacts on castings for its agronomic value.

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“…Vermicomposting is also able to achieve a finer and more homogeneous final product compared with classical composting (Hanc and Dreslova, 2016). Arora and Kaur (2019) presented that conversion of agriculture wastes (mass ratio of straw:cow-dung:azolla = 147:49:4) was faster by vermicomposting than that by aerobic composting. In the study of composting of green wastes, the vermicompost had a higher electric conductivity (EC) value and total nitrogen compared with the products in aerobic composting (Gong et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Effects of different lipid contents on growth of earthworms and the products during vermicomposting

Yin

Song

et al. 2019

Waste Manag Res

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In China, the production of kitchen waste was more than 97 million tons per year in 2016. The high lipid content of kitchen waste makes it hard to degrade. Vermicomposting is a kind of low-cost biotechnology through the combination of earthworms and microbes, which could be considered in converting kitchen waste to valuable products. However, the effect of the lipid in kitchen waste on earthworms and composting is not known yet. The objective of this study was to analyze the effects of lipid on vermicomposting and to derive the most suitable lipid content in vermicomposting. In our study, kitchen waste with four different lipid contents was prepared: 0% (A), 5% (B), 10% (C) and 15% (D). The earthworm growth and chemical characters of substrates were measured at the interim (14 days) and the end (28 days) of vermicomposting. Our results showed that the high content of lipid had negative effects on growth of earthworms and products in vermicomposting. The kitchen waste with lower lipid content could be better composted by earthworms. The average body weight of the earthworm increased by 9% in treatment A. Total nitrogen, available phosphorus, available potassium and nitrate nitrogen of treatment A with 0% (measured value: 5%) lipid content were significantly higher than those in other treatments. Meanwhile, treatment A had the lowest carbon/nitrogen ratio which might be due to hindrances in the breathing and activities of earthworms. The high content of lipid makes growth of aerobic bacteria such as nitrifying bacteria difficult.

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Azolla pinnata, Aspergillus terreus and Eisenia fetida for enhancing agronomic value of paddy straw

Cited by 20 publications

References 58 publications

Analysis and advanced characterization of municipal solid waste vermicompost maturity for a green environment

Analysis and advanced characterization of municipal solid waste vermicompost maturity for a green environment

Unveiling the Efficiency of Psychrophillic Aporrectodea caliginosa in Deciphering the Nutrients from Dalweed and Cow Manure with Bio-Optimization of Coprolites

Effects of different lipid contents on growth of earthworms and the products during vermicomposting

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