Effect of Long Term Manuring on Carbon Sequestration Potential and Dynamics of Soil Organic Carbon Labile Pool Under Tropical Rice-Rice Agro-ecosystem

Mandal, Mitali; Kamp, Prajnyamayee; Singh, Muneshwar

doi:10.1080/00103624.2020.1718690

Cited by 32 publications

(19 citation statements)

References 32 publications

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“…In the present study, the results showed that soil MBC content in rhizosphere and non‐rhizosphere soils were increased with combined application of rice straw or organic manure with mineral fertilizer treatments, compared without fertilizer input treatment. The reason maybe that soil available nutrient content were increased with application of organic material (crop residue and organic manure) treatments, which provided C substrate and nutrient for the growth and reproduction of soil microbe, and then soil microbial growth rate and microbial biomass were increased [25], these results were agree with previous studies [23,25]. Meanwhile, soil MBC content with combined application of rice straw or organic manure with mineral fertilizer treatments were higher than that of mineral fertilizer alone treatment, the reason maybe that decomposition of rice straw or organic manure, soil C:N ratio and slow‐acting nutrient content were increased under long‐term application of rice straw or organic manure condition, which provided nutrient for soil microbe growth and multiplying [26].…”

Section: Discussionsupporting

confidence: 91%

“…And the amount of root exudates were also affected by taken different fertilization practice, root biomass and root exudates were increased under combined application of rice straw or organic manure with mineral fertilizer condition [9]. These results were supported by many reports from other long‐term field experiment [23,27]. Meanwhile, in the present study, the results showed that soil MBC content and basal respiration of soil microbe in rhizosphere soil were significantly higher ( p < .05) than that of non‐rhizosphere soil with different fertilizer treatments, the reason maybe that rice root growth, activities, root exudates, and soil enzyme activities were increased in rhizosphere soil, therefore, the soil MBC content and soil microbial respiration in rhizosphere soil were also increased.…”

Section: Discussionsupporting

confidence: 79%

Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

“…Although the soil MBC content account for only a small proportion of SOC in agricultural soil, it is a sensitive indicator of soil quality and nutrient cycling [23]. It is widely accepted that organic matter (organic manure or crop residue) addition to soil long-term has been demonstrated to increase soil MBC content [23,24]. In the present study, the results showed that soil MBC content in rhizosphere and non-rhizosphere soils were increased with combined application of rice straw or organic manure with mineral fertilizer treatments, compared without fertilizer input treatment.…”

Section: Discussionmentioning

confidence: 99%

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Microbial carbon source utilization in rice rhizosphere and non‐rhizosphere soils in a 34‐year fertilized paddy field

Tang

Wen

et al. 2020

J Basic Microbiol

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Carbon (C) is playing an important role in regulating soil nutrient cycling, maintaining soil fertility and crop yield, but there is still need to further study on how C source utilization characteristic respond to soil physical and chemical properties change with different fertilizer treatments under a double‐cropping rice (Oryza sativa L.) field in southern China. Therefore, the effects of 34‐year long‐term fertilizer regime on C source utilization characteristic in rice rhizosphere and non‐rhizosphere soils under a double‐cropping rice field in southern China were studied by using 18O–H2O method in the present paper. The field experiments were included four fertilizer treatments: mineral fertilizer alone (MF), rice straw and mineral fertilizer (RF), 30% organic manure and 70% mineral fertilizer (OM), and without fertilizer input as control (CK). The results showed that microbial biomass C content, basal respiration of soil microorganism and microbial growth rate in rice rhizosphere and non‐rhizosphere soils with OM and RF treatments were significantly higher (p < .05) than that of CK treatment. The microbial C utilization efficiency (CUE) in rhizosphere soil with MF and CK treatments were significantly higher (p < .05) than that of OM treatment, but there was no significantly difference (p > .05) in microbial CUE in non‐rhizosphere soil between MF, RF, OM, and CK treatments. In the different parts of soil, the microbial biomass C content and basal respiration of soil microorganism in rhizosphere soil were higher than that of non‐rhizosphere soil, but the microbial growth rate and microbial CUE in non‐rhizosphere soil were higher than that of rhizosphere soil. Compared with CK and MF treatments, the metabolic capacity of soil microorganism to exogenic C source with RF and OM treatments were significantly higher (p < .05) than that of MF and CK treatments. The largest type of exogenic C source used by soil microorganism was carboxylic acids, followed by amino acid and carbohydrate, and complex compounds was the smallest. In the different parts of soil, the metabolic capacity of soil microorganism to the types of exogenic C source in non‐rhizosphere soil was higher than that of rhizosphere soil. The redundancy analysis results indicated that there had obvious difference in utilization characteristic of soil microorganism to exogenic C source among different fertilizer treatments. In conclusion, this results indicated that characteristic of soil C source utilization were significantly changed under different long‐term fertilizer condition.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 79%

Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Microbial carbon source utilization in rice rhizosphere and non‐rhizosphere soils in a 34‐year fertilized paddy field

Tang

Wen

et al. 2020

J Basic Microbiol

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Long‐term impact of organic and inorganic fertilizers on soil organic carbon dynamics in a rice‐ wheat system

et al. 2022

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Deep soil carbon (C) plays an important role in the global carbon cycle because it is more recalcitrant and remains in the soil for a longer period. Yet, very few studies have reported the impact of long-term fertilization on soil organic carbon (SOC) dynamics in deep soil in a rice-wheat system (RWS). Hence, the objectives of this study were to evaluate the long-term fertilization impact on carbon sequestration and C pools in RWS in the Indo-Gangetic Plain (IGP) of India. Application of 90 kg N, 20 kg P and 25 kg K ha À1 through mineral fertilizers (NPK) + green gram incorporation (GR) + 30 kg N ha À1 through farmyard manure (FYM) sequestered more C (25.86 Mg ha À1 ) in the 0-105 cm soil depth compared with mineral fertilizer alone (1.25 Mg ha À1 ). The C-sequestration rate ranged between 0.61 to 1.23 Mg C ha À1 yr À1 under treatments having organic fertilizer and mineral fertilizer, whereas it varied from 0.06 to 0.39 Mg C ha À1 yr À1 in the treatments receiving mineral fertilizer only. Total C and critical C input were 197 Mg kg À1 and 1.94 Mg C ha À1 yr À1 , respectively under NPK + GR + FYM treatment. Integrated application of mineral fertilizers and organics in treatments NPK + FYM, NPK + SPM (sulphitation press mud), NPK + GR, NPK + GR + FYM and NPK + CR (crop residue) resulted in higher sustainable yield index of RWS compared to mineral fertilizer alone. We conclude that application of organic material along with mineral fertilizers is essential to mitigate the atmospheric C load through C-sequestration in deep soils and to attain sustainable RWS productivity in the IGP.

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Long-Term Fertilizer Experiments: Strategies for Efficient Carbon Sequestration

Parihar,

Meena,

Singh

et al. 2024

Greenhouse Gas Regulating Microorganisms in Soil Ecosystems

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Effect of Long Term Manuring on Carbon Sequestration Potential and Dynamics of Soil Organic Carbon Labile Pool Under Tropical Rice-Rice Agro-ecosystem

Cited by 32 publications

References 32 publications

Microbial carbon source utilization in rice rhizosphere and non‐rhizosphere soils in a 34‐year fertilized paddy field

Microbial carbon source utilization in rice rhizosphere and non‐rhizosphere soils in a 34‐year fertilized paddy field

Long‐term impact of organic and inorganic fertilizers on soil organic carbon dynamics in a rice‐ wheat system

Long-Term Fertilizer Experiments: Strategies for Efficient Carbon Sequestration

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