Soil microbial activity and community composition as influenced by application of pig biogas slurry in paddy field in southeast China

Chen, Zhaoming; Wang, Qiang; Ma, Junwei; Chapman, Stephen J.; Zou, Ping; Ye, Jing; Yu, Qihao; Sun, Wanchun; Lin, Hui; Jiang, Lina

doi:10.1007/s10333-019-00761-y

Cited by 19 publications

(13 citation statements)

References 55 publications

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“…A previous study reported that soil microbial communities were affected by BS application. 8 This might also have had an influence on rice and soil δ 15 N values in this study. High δ 15 N correlation coefficients found between rice and straw reflected the longevity and availability of BS-treated soil N nutrients that were similarly transferred into the rice and straw.…”

Section: ■ Discussionmentioning

confidence: 81%

“…Fertilizer treatments are detailed in Table 1, and designed according to previous studies. 8 Two fertilizers (urea and biogas slurry) were compared with a control (no treatment). Urea (N content of 46 g kg −1 ) was applied to the experimental soil at 270 kg ha −1 of total N. Biogas slurry (N content of 2.3−4.9 g kg −1 ) had five different N application rates, consisting of (1) 135 kg ha −1 (0.5N BS1), (2) 270 kg ha −1 (1N BS2), (3) 405 kg ha −1 (1.5N BS3), (4) 540 kg ha −1 (2N BS4), and (5) 1080 kg ha −1 (4N BS5) of total N. Each fertilizer application was split into three portions and sequentially applied during the transplanting (0 day), tilling (7 days), and booting (25 days) stages at rates of 50, 20, and 30% of the total N input, respectively.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…7 Biogas slurry (BS) is increasing in popularity as a fertilizer as it repurposes waste from sustainable biogas extractors, providing a beneficial nutrient resource suitable for organic agricultural systems. 8 The application of BS could significantly promote the growth of plants and increase soil fertility as it provides alkalihydrolyzable nutrients 9 and also enhances the protein content and mineral elements in rice. 10 Although BS fertilizer utilization is increasing in popularity, as yet, there are no studies that show the isotopic BS response in crops such as rice.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Biogas manure (biogas slurry and biogas dregs) is rapidly growing in popularity as an organic fertilizer resource from the large amount of livestock waste fermented in China, , and the annual production is around 0.4 billion tones . Biogas slurry (BS) is increasing in popularity as a fertilizer as it repurposes waste from sustainable biogas extractors, providing a beneficial nutrient resource suitable for organic agricultural systems . The application of BS could significantly promote the growth of plants and increase soil fertility as it provides alkali-hydrolyzable nutrients and also enhances the protein content and mineral elements in rice .…”

Section: Introductionmentioning

confidence: 99%

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Stable Isotope Effects of Biogas Slurry Applied as an Organic Fertilizer to Rice, Straw, and Soil

Wang

Shao

et al. 2021

J. Agric. Food Chem.

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Biogas slurry (BS) is now increasingly used for organic rice production in China. However, the isotopic response and fractionation of different BS application rates to characterize organic rice cultivation have not yet been investigated. In this study, different fertilizer treatments were applied to rice paddy soil including urea, BS with five different application rates and a control with no fertilizer added. Multiproxy analyses (% C, % N, δ13C, δ15N, δ2H, and δ18O) of rice, rice straw, and soil were undertaken using elemental analyzer–isotope ratio mass spectrometry. Rice, straw, and soil showed only minor isotopic and elemental variations across all fertilizer treatments except for δ15N. δ15N values of rice and straw became more positive (+6.1 to +11.2‰ and +6.1 to +12.2‰, respectively) with increasing BS application rates and became more negative with urea fertilization (+2.8 and +3.0‰, respectively). The soil had more positive δ15N values after BS application but showed no significant change with different application rates. No obvious δ15N isotopic differences were found between the control soil and soils fertilized with urea. 15N fractionation was observed between rice, straw, and soil (Δrice‑soil −2.0 to +4.3‰, Δstraw‑soil −1.9 to +5.3‰) and their isotopic values were strongly correlated to each other (r > 0.94, p < 0.01). Results showed that % C, % N, δ13C, δ2H, and δ18O in rice displayed only minor variations for different fertilizers. However, δ15N values increased in response to BS application, confirming that BS leaves an enriched 15N isotopic marker in soil, straw, and rice, indicating its organically cultivated status. Results from this study will enhance the stable isotope δ15N databank for assessing organic practices using different fertilizer sources.

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Section: ■ Discussionmentioning

confidence: 81%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Stable Isotope Effects of Biogas Slurry Applied as an Organic Fertilizer to Rice, Straw, and Soil

Wang

Shao

et al. 2021

J. Agric. Food Chem.

Self Cite

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show abstract

“…However, it is more often widely used as fertilizer in crop production [ 10 , 11 ]. With abundance in nitrogen (N), phosphorus (P), organic matter, trace elements and a variety of hydrolases, digestate is considered as a high-quality fertilizer to increase crop yield and improve soil quality [ 12 , 13 ]. Tang found that after applying digestate, rice grain yield was 7.48 t ha −1 , which was 8.9% higher than that resulting from conventional fertilization [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Digestate and Straw Combined Application on Maintaining Rice Production and Paddy Environment

Liu

et al. 2021

IJERPH

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Few studies have focused on the combined application of digestate and straw and its feasibility in rice production. Therefore, we conducted a two-year field experiment, including six treatments: without nutrients and straw (Control), digestate (D), digestate + fertilizer (DF), digestate + straw (DS), digestate + fertilizer + straw (DFS) and conventional fertilizer + straw (CS), to clarify the responses of rice growth and paddy soil nutrients to different straw and fertilizer combinations. Our results showed that digestate and straw combined application (i.e., treatment DFS) increased rice yield by 2.71 t ha−1 compared with the Control, and digestate combined with straw addition could distribute more nitrogen (N) to rice grains. Our results also showed that the straw decomposition rate at 0 cm depth under DS was 5% to 102% higher than that under CS. Activities of catalase, urease, sucrase and phosphatase at maturity under DS were all higher than that under both Control and CS. In addition, soil organic matter (SOM) and total nitrogen (TN) under DS and DFS were 20~26% and 11~12% higher than that under B and DF respectively, suggesting straw addition could benefit paddy soil quality. Moreover, coupling straw and digestate would contribute to decrease the N content in soil surface water. Overall, our results demonstrated that digestate and straw combined application could maintain rice production and have potential positive paddy environmental effects.

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Heavy Metal Concentrations and Basal Respiration in Contaminated Substrates used in the Cuban Urban Agriculture

Alfaro¹,

Martín²,

Ugarte³

et al. 2021

Water Air Soil Pollut

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Soil microbial activity and community composition as influenced by application of pig biogas slurry in paddy field in southeast China

Cited by 19 publications

References 55 publications

Stable Isotope Effects of Biogas Slurry Applied as an Organic Fertilizer to Rice, Straw, and Soil

Stable Isotope Effects of Biogas Slurry Applied as an Organic Fertilizer to Rice, Straw, and Soil

Effect of Digestate and Straw Combined Application on Maintaining Rice Production and Paddy Environment

Heavy Metal Concentrations and Basal Respiration in Contaminated Substrates used in the Cuban Urban Agriculture

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