Agro economic performance of Bio-slurry on boro rice cultivation in some sites of Moulvibazar district

Shaheb, Rayhan; Nazrul, MI; Khan, Asm Mr

doi:10.3329/bjar.v42i2.32821

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Bio-slurry is an anaerobic processed natural material discharged as result from the biogas plant after generation of burnable methane gas for cooking, lighting, and running hardware [3]. It can also be widely used as fertilizer for crop production, containing higher nutrient than chemical fertilizer [4]. Untreated animal excreta like cow dung, poultry manure contain many diseases causing pathogenic microorganisms that might pose serious health problems to human being [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…The residue produced from biogas plant has been used as the alternative fertilizer, nearly 31,000 biogas plants have been installed by the year of 2013 [17]. The huge amount of bio-slurry produced from the biogas plant is not being disposed of properly in soli lands; hence, it causes environmental pollution and also spreads zoonotic pathogens [4]. However, most of the research works conducted on bio-slurry in Bangladesh is related to fertilizer- and energy-based not based on bacterial pathogens.…”

Section: Introductionmentioning

confidence: 99%

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Microbial load in bio-slurry from different biogas plants in Bangladesh

Islam¹,

Biswas²,

Sabuj³

et al. 2019

J Adv Vet Anim Res

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Objective:The study was aimed to isolate, identify, and characterize common indicator bacteria, including Escherichia coli, Salmonella spp., and Staphylococcus spp. in manure and bio-slurry samples of different livestock farms and biogas plants of Bangladesh.Materials and Methods:A total of 114 samples of manure and bio-slurry were collected from different livestock farms and biogas plants in Bangladesh. The total viable count (TVC), E. coli, Salmonella spp., and Staphylococcus spp. counts were determined by the spread plate technique method. Isolation and identification were performed by colony characteristics, staining, biochemical tests, and, finally, by using PCR. Antibiotic susceptibility test of the isolated bacteria was tested against commonly used antibiotics by using the disk diffusion method.Results:The mean TVC, E. coli, Salmonella spp., and Staphylococcus spp. counts were ranged from 8.19–10.75, 5.2–6.96, 5.81–6.87, 5.68–7.68 in manure samples and 7.26–8.65, 3.82–5.2, 4–5.54, 3.14–5.9 log cfu/gm in bio-slurry, respectively. In anaerobic digester after 30 days digestion, the presence of E. coli, Salmonella spp., and Staphylococcus spp. varied from 0–5.11, 0–4.84, and 0–5.59 log cfu/gm at 25°C, 27°C, 29°C, and 45°C temperature. Above-mentioned bacteria were absent in bio-slurry collected from anaerobic digester after 60 days digestion at environmental temperature. Bacterial counts were reduced significantly in both household slurry pits and experimental anaerobic digester. Antibiotic susceptibility results revealed that multidrug-resistant indicator bacteria were present in the bio-slurry samples.Conclusion:Our findings conclude that the microbial load after treatment of animal manure via anaerobic digestion (Biogas plant) was grossly reduced and the reduction of bacterial pathogen depends on the duration and temperature of digestion.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microbial load in bio-slurry from different biogas plants in Bangladesh

Islam¹,

Biswas²,

Sabuj³

et al. 2019

J Adv Vet Anim Res

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Differences in soil microbial communities and enzyme activity due to the application of bioslurry under cultivation

Mofokeng

Habig²,

Amoo

et al. 2020

South African Journal of Plant and Soil

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Optimal Application of Biogas Slurry in Paddy Fields under the Dual Constraints of Agronomy and Environment in the Yangtze River Delta Region

Shi,

Jiang,

Liu

et al. 2024

Agronomy

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The production of huge amounts of biogas slurry during livestock breeding has resulted in pressing environmental issues. Although paddy fields can be potential sinks for the disposal of biogas slurry, the impacts of biogas slurry on rice production, grain quality, and relevant environmental risks in the Yangtze Delta region remain unclear. Herein, we conducted a field trial from 2021 to 2023 which involved different gradients of biogas slurry utilization, including CK (no fertilizer), CN (100% chemical nitrogen (N) of 240 kg ha−1), NBS (biogas slurry replacing 50% chemical N), BS1 (replacing 100% chemical N), BS1.5 (replacing 150% chemical N), and BS2 (replacing 200% chemical N). The results showed that there were no significant differences in average rice yields between CN, NBS, BS1.5, and BS2 over the three-year study period, with an average yield of 8283 kg ha−1, and the average yields of BS1 and CK were 7815 kg ha−1 and 6236 kg ha−1, respectively. However, heavy utilization of biogas slurry (BS1.5 and BS2) not only significantly reduced the rice seed-setting rate, the 1000-grain weight, and the processing quality, but also significantly increased the protein, amylose, Cu, and Zn content in rice grains; additionally, higher N losses occurred via surface water and increased NH3 volatilization was observed, finally resulting in lower nitrogen-use efficiency. Meanwhile, moderate utilization of biogas slurry (NBS and BS1) led to better rice quality and nitrogen-use efficiency, lower potential food safety risk, and N loss. Further, compared to BS1, NBS showed higher yield, harvest index, processing quality, gel consistency, palatability scores, and nitrogen-use efficiency, but lower N losses were present. Overall, the NBS treatment balanced the agronomic benefits and environmental risks in the Yangtze River Delta region. In the future, more attention should be paid to food safety and environmental risks when using biogas slurry.

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Agro economic performance of Bio-slurry on boro rice cultivation in some sites of Moulvibazar district

Cited by 3 publications

References 5 publications

Microbial load in bio-slurry from different biogas plants in Bangladesh

Microbial load in bio-slurry from different biogas plants in Bangladesh

Differences in soil microbial communities and enzyme activity due to the application of bioslurry under cultivation

Optimal Application of Biogas Slurry in Paddy Fields under the Dual Constraints of Agronomy and Environment in the Yangtze River Delta Region

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