Short-term responses of soil organic carbon and carbon pool management index to different annual straw return rates in a rice–wheat cropping system

Zhou, Liqun; Hu, Naijuan; Zhang, Zhengwen; Xu, Jianglai; Tao, Baorui; Meng, Yali

doi:10.1016/j.catena.2015.08.008

Cited by 200 publications

(104 citation statements)

References 48 publications

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“…The increases in and correlations between enzyme activity and organic carbon indicators suggest a balanced improvement of soil biological activity, as observed by Yevdokimov et al [93] and Saikia et al [94]. These increases are detected from the first cropping season and are maintained throughout the three cropping seasons of study, even in TOC, despite this being an indicator less susceptible, in the short or medium term, to management changes [26,27].…”

Section: Discussionsupporting

confidence: 62%

“…Although total organic carbon is the most widely used indicator to assess soil quality, soil productivity and agricultural sustainability [24,25], it is generally accepted that the change in its content is not very sensitive in the short and medium term [26,27], so labile fractions-which often include particulate organic carbon (POC), light fraction (LF), and water-soluble organic carbon (WSOC) [28]-have been used as short-term indicators after changing soil management practices [29][30][31][32][33][34]. POC, LF and WSOC are three fractions considered active in the nutrient cycles, readily available for microbial breakdown and closely associated with nutrient supply to crops [35,36].…”

Section: Introductionmentioning

confidence: 99%

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Short-Term Effects of Changing Soil Management Practices on Soil Quality Indicators and Crop Yields in Greenhouses

Salinas

Meca²,

Torres

2020

Agronomy

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The short-term responses of soil quality indicators are important for assessing the effects of new management practices and addressing threats to crop yields in greenhouses. The aim of this study was to assess, during three consecutive cropping seasons, the effect of a sustainable management package (CRTMP)—which includes the on-site reuse of greenhouse crop residues and tillage—in comparison with conventional management, based on fertigation only (CMP), on certain biochemical soil quality indicators and crop yields. CRTMP significantly increased (p < 0.05) the values of total organic carbon (TOC), particulate organic carbon (POC), light fraction (LF), water soluble organic carbon (WSOC), and dehydrogenase (DH) and β-glucosidase (GL) activities at a depth of 0–15 cm, as well as the mean concentration of nitrates in the soil solution. In addition, a significant Pearson’s correlation (p < 0.01) found between the indicators suggested a balanced improvement of soil biological activity and nutritional soil state. Nonetheless, the significant (p < 0.05) increases in the mean concentration of chlorides in the soil solution and electrical conductivity (p < 0.05) increased the risk of salinization, which may have affected the concentration of nitrates in the petiole sap and total production in CRTMP, which were significantly lower than in CMP. Nevertheless, the proportion of premium product was significantly higher in CRTMP, while the proportion of non-commercial production decreased.

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Section: Discussionsupporting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Short-Term Effects of Changing Soil Management Practices on Soil Quality Indicators and Crop Yields in Greenhouses

Salinas

Meca²,

Torres

2020

Agronomy

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“…Several studies have shown that in double-rice or rice-wheat cropping systems, straw-return influences soil properties and crop yields [15,16]. However, the effects of different straw-return methods on soil biochemical characteristics and crop yields, and which straw-return method is the most suitable in the maize-rice cropping system are not clear.…”

Section: Introductionmentioning

confidence: 99%

Effects of Straw-Return Method for the Maize–Rice Rotation System on Soil Properties and Crop Yields

Han

Zhou

et al. 2020

Agronomy

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Exploring suitable maize straw-return measures is essential for the new double-cropping system of maize (Zea mays L.)–rice (Oryza sativa L.) rotation in the middle reaches of Yangtze River in China, which can increase crop yield by improving soil quality. In this study, four straw-return measures were evaluated by investigating the soil bulk density (BD), organic matter (OM), microbial community, and nutrients from 2016 to 2018. The four straw-return treatments were as follows: (1) no straw-return (CK), (2) only rice straw incorporated into the field (M0Ri), (3) both maize and rice straw incorporated to field (MiRi), and (4) maize straw mulched and rice straw incorporated into the field (MmRi). Compared to CK, two-season crop straw-return treatments changed soil microbial community composition, and increased soil total organic carbon (TOC) and dissolved organic carbon (DOC), microbial biomass carbon (MBC), mineralized nitrogen (Nmin), available phosphorus (P) and exchangeable potassium (K) in the 0–20 cm soil layer by 3.6%, 63.4%, 38.8%, 12.4%, 39.7%, and 21.6%, respectively, averaged across MmRi and MiRi treatments. In addition, MmRi and MiRi increased annual yield by 9.1% and 15.2% in 2017 and 11.7% and 12.9% compared to CK in 2018, respectively. MmRi exhibited superiority in the soil microbial community, enzyme activities, DOC, MBC, Nmin, available P, and exchangeable K in contrast to MiRi. We concluded that MmRi is the best measure to implement for straw-return in maize–rice rotation systems.

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“…Despite the no significant difference in total C and N contents between crop rotations, changes in labile carbon forms could be detected early compared to the TOC Chen et al, 2009;Zhu et al, 2015). In this study, all the C and N pools analyzed were positively correlated each other (Table 2).…”

Section: Soil Sampling and Analysesmentioning

confidence: 53%

Role of Crop Rotations in the Dynamic of Soil Organic Matter Pools

Moreira¹,

Chiba²,

Maria³

et al. 2018

JAS

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Soil organic matter is considered a key attribute for a sustainable agricultural production and is influenced by the quantity and quality of the crop residue deposited on the soil surface. Therefore, different crop rotations could change the soil organic matter pools. The objectives of this study were to evaluate the soil carbon pools obtained by chemical and physical fractionation methods and the humification index under different crop rotations in a no-till system. We test the following hypothesis: a) the distribution of C and N among the soil organic matter fractions depends on plant species rotation schemes and; b) labile fractions are more sensitive to the input of crop residues and therefore, more suitable for evaluating the impact of different crop rotations in the soil organic matter quality. We evaluated four crop sequences (corn/corn/corn; corn/wheat/corn; soybean/wheat/corn and soybean/corn/corn) in a no-till system. A five-year reforested area was used as reference. We determined the total C and N contents, the mineral-associated C and N, the light fraction of C and N, the labile carbon extracted with KMnO 4 and the soil organic matter humification index. We found narrow differences between the crop rotation systems in the total C and N levels, the mineral-associated C and N fractions and the labile C extracted with KMnO 4 . The diversification of the agricultural system with soybean in crop rotation favored the accumulation of light fraction C and N in the soil that were more efficient to provide information about the changes in the soil organic matter quality.

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Short-term responses of soil organic carbon and carbon pool management index to different annual straw return rates in a rice–wheat cropping system

Cited by 200 publications

References 48 publications

Short-Term Effects of Changing Soil Management Practices on Soil Quality Indicators and Crop Yields in Greenhouses

Short-Term Effects of Changing Soil Management Practices on Soil Quality Indicators and Crop Yields in Greenhouses

Effects of Straw-Return Method for the Maize–Rice Rotation System on Soil Properties and Crop Yields

Role of Crop Rotations in the Dynamic of Soil Organic Matter Pools

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