Carbon and nitrogen mineralization patterns of two contrasting crop residues in a Mollisol: Effects of residue type and placement in soils

Li, Lujun; Han, Xiaofei; You, Meng-Yang; Yuan, Yaru; Xue-li, Ding; Qiao, Yunfeng

doi:10.1016/j.ejsobi.2012.11.002

Cited by 83 publications

(60 citation statements)

References 29 publications

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“…The high N content, lower C/N ratio and lignin/N in sunflower residue, when compared to triticale, could result in a lower limitation on decomposers during the early stage of decomposition intensified by rainfall in the day preceding this evaluation as has been described. According to Li et al (2013), crop residues with a high C/N ratio and, consequently, lower N availability favor soil N immobilization, resulting in lower rates of ECO 2 (Sainju et al, 2012). A higher CO 2 flux was observed in the presence of common vetch residue (C/N = 15.4) compared with black oats (C/N = 36.3) (Costa et al, 2008), and this difference was attributed to the fast decomposition of plant tissue with low C/N ratios, especially under no-till.…”

Section: Effect Of Crop Residues On Ecomentioning

confidence: 99%

Cover crop rotations in no-till system: short-term CO2 emissions and soybean yield

Rigon

Calonego

Rosolem

et al. 2018

Sci. agric. (Piracicaba, Braz.)

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In addition to improving sustainability in cropping systems, the use of a spring and winter crop rotation system may be a viable option for mitigating soil CO 2 emissions (ECO 2 ). This study aimed to determine short-term ECO 2 as affected by crop rotations and soil management over one soybean cycle in two no-till experiments, and to assess the soybean yields with the lowest ECO 2 . Two experiments were carried out in fall-winter as follows: i) triticale and sunflower were grown in Typic Rhodudalf (TR), and ii) ruzigrass, grain sorghum, and ruzigrass + grain sorghum were grown in Rhodic Hapludox (RH). In the spring, pearl millet, sunn hemp, and forage sorghum were grown in both experiments. In addition, in TR a fallow treatment was also applied in the spring. Soybean was grown every year in the summer, and ECO 2 were recorded during the growing period. The average ECO 2 was 0.58 and 0.84 g m 2 h −1 with accumulated ECO 2 of 5,268and 7,813 kg ha -1 C-CO 2 in TR and RH, respectively. Sunn hemp, when compared to pearl millet, resulted in lower ECO 2 by up to 12 % and an increase in soybean yield of 9% in TR. In RH, under the winter crop Ruzigrazz+Sorghum, ECO 2 were lower by 17%, although with the same soybean yield. Soil moisture and N content of crop residues are the main drivers of ECO 2 and soil clay content seems to play an important role in ECO 2 that is worthy of further studies. In conclusion, sunn hemp in crop rotation may be utilized to mitigate ECO 2 and improve soybean yield.

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Section: Effect Of Crop Residues On Ecomentioning

confidence: 99%

Cover crop rotations in no-till system: short-term CO2 emissions and soybean yield

Rigon

Calonego

Rosolem

et al. 2018

Sci. agric. (Piracicaba, Braz.)

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“…Priming effects are generally considered strong short-term changes in the turnover of soil organic matter (SOM) caused by the substrate added to the soil (Kuzyakov, 2002). Negative and/or neutral priming effects induced by crop residue addition (Dalenberg and Jager, 1989;Blagodatskaya and Kuzyakov, 2008) have not been reported as often as positive effects (Kuzyakov, 2002;Fontaine et al, 2004;Conde et al, 2005;Nottingham et al, 2009;Guenet et al, 2010;Kochsiek et al, 2013;Li et al, 2013;Chen et al, 2014). It is generally believed that the quality and quantity of organic substances affect the intensity of the priming effect (Dalenberg and Jager, 1989;Fontaine et al, 2004;Kuzyakov and Bol, 2006;Blagodatskaya and Kuzyakov, 2008;Blagodatskaya et al, 2009;Nottingham et al, 2009;Guenet et al, 2010;Li et al, 2013;Chen et al, 2014;Derrien et al, 2014;Mazzilli et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Crop residues represent a major source of soil organic carbon (SOC) input, while adding this kind of "fresh" organic matter to the soil may change the turnover of native SOC through priming effects (Kuzyakov, 2002;Fontaine et al, 2004;Conde et al, 2005;Guenet et al, 2010;Kochsiek et al, 2013;Li et al, 2013). Priming effects are generally considered strong short-term changes in the turnover of soil organic matter (SOM) caused by the substrate added to the soil (Kuzyakov, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…Some complex organic substances (e.g., plant residues) can induce a more pronounced priming effect than easily available substances (e.g., glucose and sucrose) (Fontaine et al, 2004;Chen et al, 2014;Mazzilli et al, 2014). Many studies on the priming effect induced by crop residues were carried out over a relatively short time (i.e., from a few hours to several days) with the decomposition of crop residues in their early stage (Conde et al, 2005;Blagodatskaya et al, 2009;Nottingham et al, 2009;Li et al, 2013;Chen et al, 2014). As the primed soil respiration is not just a short-term response, it can also persist for many weeks or several months after the complete decomposition of organic substrates (Fontaine et al, 2004(Fontaine et al, , 2011.…”

Section: Introductionmentioning

confidence: 99%

“…However, in different studies adding mineral N to soil amended with organic substances has led to a positive effect on the decomposition of native SOC (Conde et al, 2005;Kochsiek et al, 2013;Li et al, 2013;Dimassi et al, 2014), as well as to a negative effect (Khan et al, 2007;Blagodatskaya et al, 2009;Guenet et al, 2010;Fontaine et al, 2011;Chen et al, 2014), or a neutral effect on native SOC decomposition (Sall et al, 2007;Kochsiek et al, 2013;Chen et al, 2014). In order to explain the different effects of N addition on the decomposition of SOM, two controversial hypotheses were proposed: either N deficiency increases SOC decomposition or sufficient N supply stimulates microbial growth and SOC decomposition (Conde et al, 2005;Khan et al, 2007;Blagodatskaya et al, 2009;Guenet et al, 2010;Fontaine et al, 2011;Kochsiek et al, 2013;Li et al, 2013;Chen et al, 2014;Dimassi et al, 2014). Addition of crop residues, especially those having a higher C: N ratio, can induce N immobilization, with the absence of inorganic N inhibiting SOC decomposition.…”

Section: Introductionmentioning

confidence: 99%

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Priming effect of maize residue and urea N on soil organic matter changes with time

Qiu

Ouyang

et al. 2016

Applied Soil Ecology

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A B S T R A C TTo investigate the effects of urea nitrogen (N) and crop residues on soil organic carbon (SOC) decomposition, a batch of incubation experiments was carried out for 250 days by incorporating 15 Nlabeled urea and 13 C-labeled maize residue into soil. Adding maize residue alone or adding maize residue together with urea N had a significant priming effect on SOC. Furthermore, the direction of the priming effect changed over the incubation. This effect could be characterized by three stages. The first stage occurred just after maize residue addition when the substrate for microorganisms switched from native SOC to easily available maize C (lasting $7 days). The second stage showed a positive effect on the decomposition of native SOC (lasting $28-58 days). The third stage showed a negative effect on the decomposition of native SOC. In contrast, adding N alone caused a positive effect over the first 65 days of incubation, followed by a slight negative priming effect. The overall effect of maize residue C and urea N addition on the decomposition of native SOC was dependent on the balance between the inhibitory and stimulatory effects. At the end of the incubation, adding maize residue alone had little effect on the decomposition of native SOC; urea N addition alone increased SOC decomposition by 9.1%, while adding N to soil amended with maize residue decreased SOC decomposition by 9.5%. The amount of residueinhibited SOC decomposition per unit maize C mineralized was 0.21 AE 0.06 in the Maize + N treatment. Application of urea N significantly increased the mineralization rate of maize residue after 20 days of incubation. The increased N availability, microbial biomass and dissolved organic carbon (DOC) induced by the addition of N were responsible for the higher mineralization rate of maize residue. This indicates that the priming effect induced by maize residues could persist for a long time and involved not only one mechanism but a succession of processes. The response of the priming effect to the addition of maize residue and urea N differed depending on the microbial biomass, substrate C and N availability and the stage of decomposition. Adding N to soil amended with maize residue led to a more efficient use of maize residue at the slow mineralization stage.

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Integrating nitrogen and water‐soluble carbohydrates dynamics in maize: A comparison of hybrids from different decades

et al. 2020

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During a century of maize (Zea mays L.) breeding, yield genetic gain was largely determined by increased reproductive resilience under stress and establishment of sink size (number of grains per unit area). Considering grains as competing sinks for C and N assimilates, understanding changes in the C and N economy can provide insights to define selection criteria towards a sustained yield improvement. A cognitive framework to define such criteria may consist in connecting the water‐soluble carbohydrates (WSC) and N dynamics in stem and leaves with the reproductive sink strength during post‐flowering. The objectives of this study were to advance such framework by (a) quantifying grain N demand and remobilization capacity in two hybrids as affected by N availability, and (b) formalizing how the interplay between N and WSC remobilization influence grain growth. Single cross hybrids 3394 and P1197 (released in 1991 and 2014) were evaluated to represent keystone phases of germplasm development (conventional and molecular breeding eras). P1197 outyielded 3394 consistently under high N supply, and its better N utilization efficiency was reflected through a lower grain N concentration. Under high N, the ability to maintain a greater leaf area during late grain‐filling for P1197 resulted in a reduced leaf N remobilization. Although yield was not limited by C supply, 3394 exposed greater remobilization of WSC during late grain‐filling. This study contributes to advance the development of a relevant C to N framework to further analyze drivers of genetic yield gain and assist in selection strategies in maize.

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Carbon and nitrogen mineralization patterns of two contrasting crop residues in a Mollisol: Effects of residue type and placement in soils

Cited by 83 publications

References 29 publications

Cover crop rotations in no-till system: short-term CO2 emissions and soybean yield

Cover crop rotations in no-till system: short-term CO2 emissions and soybean yield

Priming effect of maize residue and urea N on soil organic matter changes with time

Integrating nitrogen and water‐soluble carbohydrates dynamics in maize: A comparison of hybrids from different decades

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