Responses of greenhouse gas emissions to different straw management methods with the same amount of carbon input in cotton field

Ma, Linjie; Kong, Fanxuan; Lv, Xiaobing; Zhi, Wang; Zhou, Zhiguo; Meng, Yali

doi:10.1016/j.still.2021.105126

Cited by 19 publications

(10 citation statements)

References 84 publications

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“…This suggests an optimal range of residue input beyond which N 2 O emissions increase at a diminishing rate. This observation aligns with studies highlighting the nonlinearity of N 2 O emissions in response to organic matter inputs [7,39,47].This finding is consistent with previous studies indicating a threshold effect of N 2 O emissions in response to nitrogen inputs [33,39]. Similar to residue levels, a quadratic increase in N 2 O emissions with increasing nitrogen rates from 0 to 12.5 mg kg −1 soil, followed by a non-linear decrease afterward (12.5 to 37.5 mg N kg − 1 soil) in control soil without residue, highlights the intricate relationship between nitrogen availability and N 2 O emissions.…”

Section: N 2 O Emissionsupporting

confidence: 91%

“…In addition, a quadratic increase in N 2 O with N rates occurred without crop residue [33][34][35][36], and CH 4 emissions increased, exhibiting a quadratic response with increasing N rates in rice paddy [37,38]. The CH 4 flux showed a significant and positive curvilinear quadratic relationship with water-extractable soil organic C content under straw management [39]. In a meta-analysis, Abalos et al [7] reported that the biochemical nature of crop residue governed the direction of N 2 O emissions from RR.…”

Section: Introductionmentioning

confidence: 92%

“…Headspace gases were sampled at regular intervals on fixed days (0, 1,3,7,11,18,25,32,39,46,56,66,76,86,96,106, and 116 days of incubation). The gas samples were drawn from the incubation jars using a syringe and immediately transferred to a 10 ml evacuated glass vial.…”

Section: Ghg Sampling and Measurementsmentioning

confidence: 99%

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Residue Management and Nutrient Stoichiometry Control Greenhouse Gas and Global Warming Potential Responses in Alfisols

Singh,

Lenka,

Lenka

et al. 2024

Sustainability

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Although crop residue returns are extensively practiced in agriculture, large uncertainties remain about greenhouse gas (GHG) emissions and global warming potential (GWP) responses to residue return (RR) rates under different residue placements and nutrient supplements. We conducted a laboratory mesocosm experiment in Alfisol in central India to investigate the responses of soil GHG emissions (CO2, N2O, and CH4) and the global warming potential to four wheat RR rates (R0: no residue; R5: 5 Mg/ha; R10: 10 Mg/ha; R15: 15 Mg/ha) and two placements (surface [Rsur] and incorporated [Rinc]) under three nutrient supplement levels (NSLs) (NS0: no nutrients, NS1: nutrients (N and P) added to balance the stoichiometry of C:N:P to achieve 30% humification in RR at 5 t/ha, NS2: 3 × NS1). The results demonstrated a significant (p < 0.05) interaction effect of RR × NSL × residue placement on N2O emission. However, CH4 and GWP responses to the RR rate were independent of NSL. N2O fluxes ranged from −2.3 µg N2O-N kg−1 soil (R5 NS0 Rsur) to 43.8 µg N2O-N kg−1 soil (R10 NS2 Rinc). A non-linear quadratic model yielded the best fit for N2O emissions with RR rate (R2 ranging from 0.55 to 0.99) in all NSLs and residue placements. Co-applying wheat residue at 10 and 15 Mg/ha at NS1 reduced CH4 and N2O emissions (cf. R0 at NS1). However, increasing NSLs in NS2 reduced the nutrient stoichiometry to < 12:1 (C:N) and < 50:1 (C:P), which increased N2O emissions in all RR rates (cf. R0) across all residue placements. Averaged across nutrient levels and residue placements, the order of the effects of RR rates on CH4 emissions (µg C kg−1 soil) was R10 (5.5) > R5 (3.8) > R15 (2.6) > R0 (1.6). Our results demonstrated a significant linear response of total GWP to RR rates R15 > R10 > R5 > R0, ranging from 201.4 to 1563.6 mg CO2 eq kg−1 soil. In conclusion, quadratic/linear responses of GHGs to RR rates underscore the need to optimize RR rates with nutrient supplements and residue placement to reduce GHG emissions and GWP while ensuring optimal soil health and crop productivity.

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Section: N 2 O Emissionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 92%

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Residue Management and Nutrient Stoichiometry Control Greenhouse Gas and Global Warming Potential Responses in Alfisols

Singh,

Lenka,

Lenka

et al. 2024

Sustainability

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“…Recently, field studies looking at CO 2 emissions on BC treated fields are emerging, showing the potential use of this technology in different areas. [68][69][70][71] Another key point that should be carefully considered is the realistic availability of biomass for BC production, as it will have to compete with biomass conversion and combustion for energy production. The estimated capture potential of using BC ranges from 0.6-11.9 GtCO 2 per year depending on biomass availability.…”

Section: Energy and Environmental Sciencementioning

confidence: 99%

Direct air capture: process technology, techno-economic and socio-political challenges

Erans

Sanz-Pérez

Hanak

et al. 2022

Energy Environ. Sci.

330

169

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“…Conventional tillage on these lands has led to soil degradation through soil erosion and fertility loss, thereby reducing crop yield. Improved soil management practices are, therefore, required to conserve soil resources and increase crop yields to feed the increasing global population [2]. In order to preserve the soil integrity, soil management techniques used in the agriculture sector should be oriented towards resource conservation [3].…”

Section: Introductionmentioning

confidence: 99%

Changes in Soil Properties and Crop Yield under Sustainable Conservation Tillage Systems in Spring Wheat Agroecosystems

Yuan

Sadiq

Rahim³

et al. 2023

Land

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The cultivated soils in several semi-arid areas have very low organic matter due to climatic constraints that limit primary crop yield. Conservation tillage systems, outlined here as no tillage, no tillage with straw return and straw incorporation into the field, have been accepted as capable systems that preserve soil’s resources and sustain soil productivity. However, in semi-arid climates, there is presently no knowledge about the influence of different conservation tillage techniques on soil’s physical, chemical and biological properties at different soil depths in spring wheat fields and only little information about spring wheat yield in these management systems. Therefore, the present study was carried out with the objective of examining the impact of conservation tillage systems on soil properties (physical, chemical and biological) and spring wheat yield. The three conservation tillage treatments consisted of no tillage system (NT), wheat stubble return with no tillage (NTS) and straw incorporation with conventional tillage (CTS), as well as one conventional tillage (CT) control treatment, which were evaluated under randomized complete block design with three replications. The three conservation tillage treatments were compared with the conventional tillage control. Conservation tillage significantly increased the bulk density, gravimetric water content, water storage, hydraulic conductivity and soil aggregates and decreased the pore space and soil temperature compared to CT; however, no significant difference was found in the case of field capacity. Soil chemical properties in the 0–40 cm soil layer increased with conservation tillage compared to CT. Conservation tillage also notably increased the soil microbial counts, urease, alkaline phosphatase, invertase, cellulase and catalase activities relative to CT. Microbial biomasses (carbon and nitrogen) and wheat yield significantly elevated under conservation tillage compared to CT. Therefore, conservation tillage could significantly improve soil properties and maintain wheat yield for the research zone.

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Responses of greenhouse gas emissions to different straw management methods with the same amount of carbon input in cotton field

Cited by 19 publications

References 84 publications

Residue Management and Nutrient Stoichiometry Control Greenhouse Gas and Global Warming Potential Responses in Alfisols

Residue Management and Nutrient Stoichiometry Control Greenhouse Gas and Global Warming Potential Responses in Alfisols

Direct air capture: process technology, techno-economic and socio-political challenges

Changes in Soil Properties and Crop Yield under Sustainable Conservation Tillage Systems in Spring Wheat Agroecosystems

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