Dynamics and temperature sensitivity of soil organic carbon mineralization under medium-term conservation agriculture as affected by residue and nitrogen management options

Jat, Shankar Lal; Parihar, C.M.; Dey, Abir; Nayak, H.S.; Ghosh, Avijit; Parihar, Neeraj Nath; Goswami, A. K.; Singh, Awnindra K.

doi:10.1016/j.still.2019.02.005

Cited by 42 publications

(24 citation statements)

References 39 publications

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“…On the one hand, temperature directly affected the accumulation of SOC through microbial activity. At the same fertility level, the higher the temperature, the higher the crop biomass, the more litter and crop stubbles returned to the soil, and the SOC content would be more likely to increase (Roper et al 2021, Jat et al 2019. On the other hand, SOC decomposition was sensitive to the increase of temperature.…”

Section: Discussionmentioning

confidence: 99%

Distribution characteristics and prediction model of farmland soil organic carbon in eastern China

Liu

Xie

Wang

et al. 2022

Environ. Res. Commun.

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Soil organic carbon (SOC) plays a key role in soil improvement, carbon sequestration, and increasing crop yield. In this study, the distribution characteristics and the influence of hydrothermal conditions on farmland SOC content in eastern China were studied. The results showed that the spatial heterogeneity of SOC content in eastern China was obvious. In the area with the mean average temperature (MAT) below 10.42 ℃, the SOC content was negatively correlated with MAT and ≥10 °C accumulated temperature, but positively correlated with the ratio of precipitation to temperature (P/T). In the area with the MAT between 10.42 ℃ and 20.75 ℃, the SOC content was negatively correlated with mean average precipitation (MAP), MAT, P/T and ≥10 °C accumulated temperature. In the area with the MAT above 20.75 ℃, the SOC content was negatively correlated with MAT and ≥10 °C accumulated temperature, but positively correlated with MAP and P/T. In the area with the MAP below 400 mm, the SOC content was negatively correlated with P/T, but positively correlated with MAP, MAT and ≥10 °C accumulated temperature. In the area with the MAP between 400 mm and 800 mm, the SOC content was negatively correlated with P/T, but positively correlated with MAT and ≥10 °C accumulated temperature. In the area with the MAP more than 800 mm, the SOC content was negatively correlated with MAP, MAT, P/T and ≥10 °C accumulated temperature. Based on the above results, a model for predicting SOC content was established. This is of great significance for the rapid estimation of SOC content on a regional large scale.

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Section: Discussionmentioning

confidence: 99%

Distribution characteristics and prediction model of farmland soil organic carbon in eastern China

Liu

Xie

Wang

et al. 2022

Environ. Res. Commun.

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“…Likewise, the more carbon deficient soils are, the harder it is to rehabilitate. The reference soil is sandy loam in Indo-Gangetic Plain (Jat et al 2019a). Carbon Pool Index is estimated to account for this as:…”

Section: 𝐿𝑎𝑏𝑖𝑙𝑖𝑡𝑦 𝑜𝑓 𝑐𝑎𝑟𝑏𝑜𝑛 (𝐿𝑂𝐶) = 𝑉𝐿𝑆𝑂𝐶 + 𝐿𝑆𝑂𝐶 𝑁𝐿𝑆𝑂𝐶mentioning

confidence: 99%

“…On the other hand, prolonged soil non-disturbance under ZTWR guarantees moistened conditions that are congenial to developing a passive carbon pool (Jat et al 2019a;Parihar et al 2020). The labile SOC has enough time to convert to non-labile SOC pools, eventually upgrading both the labile and non-labile pools (Dey, 2016;Dey et al, 2018).…”

Section: Carbon Pool Index (Cpi)mentioning

confidence: 99%

Effect of no-tillage practices on Carbon Management Indices in a Sandy Loam Soil of India

Dinesh¹,

Sharma²,

Jat³

et al. 2023

Preprint

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After six years of continuous Conservation Agriculture practices, we investigated the impact of crop residue retention and green seeker N fertiliser supply on soil carbon indices. The lability of carbon appears to be more in zero tillage without residues (ZTWoR) plots than zero tillage with residues (ZTWR). More carbon pools were observed in 33%N+GS and 50%N+GS treatments, and the trend was 33%N+GS > 50%N+GS > 70%N+GS or RDN. CMI was higher in the 15 -30 cm layer than the 0 - 15 cm soil layer. CMI values were high in the residue-retained plots compared to non-residue retained plots. In ZTWR plots, CMI values ranged from 150.22 ± 7.37 and in ZTWoR plots, values ranged from 145.33 ± 1.09. From the study, Zero tillage with residue retention improves CMI values in the soil; hence it is recommended to improve the soil fertility and quality.

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“…C for 10years in S-W PLL and R-W PLL 5.7 and 6.7 Mg ha −1 of initial total SOC were lost from the surface soil layer under the above treatments, respectively (Table 4). The mechanical disturbances in these plots might have promoted breaking of C-rich macro-aggregates, and accumulation of C-poor micro-aggregates [65], thus resulting in oxidation of intra-aggregate SOC owing to the absence of physical protection [66,67]. In these CT plots, the moderate residue load could have been completely decomposed and used by the native microbes for the respiration process.…”

Section: Soil Carbon Changes In Relation To Carbon Inputmentioning

confidence: 99%

“…The treatment R-C-O PLL resulted in sequestration of 2.9 Mg SOC ha −1 over the period of 10 years (Table 4), whereas all other treatments had a loss of SOC during this period. In this treatment, addition of crop residue C over the years often exceeded the capability of native microbes to decompose, degrade and/or assimilate SOM to meet their cell nourishment or respiration needs [66,67]. This continuous supply of fresh organic matter encouraged formation of C-rich macro-aggregates and also entrapment as intra-aggregate SOC.…”

Section: Soil Carbon Changes In Relation To Carbon Inputmentioning

confidence: 99%

Measuring and Monitoring the Impact of Precision Land Levelling and Arable Cropping Systems on Aggregate Associated Carbon Fractions and Soil Carbon Stock in Sub-tropical Ecosystems

Naresh

Kumar

Tomar

et al. 2020

IRJPAC

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The Long term experiment (2009-10 to-2018-19) was conducted to study the effects of precision land levelled (PLL) versus traditional land levelled (TLL) systems on aggregate-associated soil organic carbon (SOC) in a farmers participatory fields under sub-tropical ecosystems (Western Uttar Pradesh) of Indian conditions. The significance of this study mainly focus to determine the suitability of various labile carbon fractions as indicators of soil quality and the stability of aggregates plays a vital role in preserving and long term storing of soil organic carbon by implementing Precision Land Levelling under various arable cropping system. The treatment comprised of sixteen alternative arable cropping systems strategies viz. R-WPLL, R-WTLL, S-WPLL, S-WTLL, R-P-MbPLL, R-P-MbTLL, R-P-OPLL, R-P-OTLL, R-C-OPLL, R-C-OTLL, O-W-MbPLL, O-W-MbTLL, M-W-MbPLL, M-W-MbTLL, M-P-MbPLL, and M-P-MbTLL etc were taken with recommended dose of fertilizers and various observations were recorded. The results indicated that the M-P-MbPLL produced 79.5 kgha-1day-1 productivity and used only 110 cm irrigation water which was 48.1 per cent less than irrigation water used for R-WPLL. The land use efficiency under R-P-MbPLL, R-P-OPLL, R-P-MbPLL, R-C-OPLL and M-P-MbPLL were recorded as 86.2, 85.1, 84.8, 84.6 and 83.9%. However, energy value in terms total input energy and energy productivity were 39.9 and 218.5 GJ ha-1 over existing R-W system (32.9 & 105.7 GJ ha-1). The quantity of water used in the R-C-O, M-W-Mb, M-P-Mb, and O-W-Mb were 46.1, 44.9, 40.1 and 36.3 per cent less than quantity of water used for R-W system. Aggregate-associated SOC contents in 0-15 cm depth were recorded highest SOC at 15-30 cm depth in PLL systems as 9.4% for both M-P-MbPLL and M-W-MbPLL. Highest PON change in arable cropping system (30.9 & 40.1%) was found in O-W-Mb with precision land levelling (T11) plots followed by R-P-O with precision land levelling (T7) plots (26.1 & 35.8%) as compared to R-W and S-W system. The values of LFOC in surface soil were 194.7, 187.9, 176.2, 170.9, 168.5, 150.6, 132.8 and 123.8 mgkg−1 in R-P-O, R-C-O, M-W-Mb, O-W-Mb, M-P-Mb, R-P-Mb, R-W and S-W with precision land levelling treatments. Higher SOC sequestration was observed with precision land leveling along with alternative arable cropping systems with O-W-MbPLL, R-C-OPLL, R-P-OPLL, O-W-MbPLL and M-P-MbPLL respectively. Therefore, PLL systems had greater soil surface aggregation and carbon storage, land levelling did not affect SOC patterns across aggregates, but changed the distribution of aggregate size, reflecting that land levelling mainly influenced soil fertility by altering soil structure.

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Dynamics and temperature sensitivity of soil organic carbon mineralization under medium-term conservation agriculture as affected by residue and nitrogen management options

Cited by 42 publications

References 39 publications

Distribution characteristics and prediction model of farmland soil organic carbon in eastern China

Distribution characteristics and prediction model of farmland soil organic carbon in eastern China

Effect of no-tillage practices on Carbon Management Indices in a Sandy Loam Soil of India

Measuring and Monitoring the Impact of Precision Land Levelling and Arable Cropping Systems on Aggregate Associated Carbon Fractions and Soil Carbon Stock in Sub-tropical Ecosystems

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