Conservation Practices in Tobacco Production Increase Large Aggregates and Associated Carbon and Nitrogen

Zou, Congming; Pearce, Robert C.; Grove, John H.; Coyne, Mark S.

doi:10.2136/sssaj2015.06.0235

Cited by 14 publications

(11 citation statements)

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“…After the interaction between crop rotation and application of organic fertilizer in this particle size, SOCS of aggregates showed significant differences with other treatments (P < 0.05). This indicates that fertilization type and crop rotation system can coordinately increase SOCS and the proportion of macro-aggregates, which is consistent with the previous research (Six et al 2000;Zou et al 2015;Zou et al 2016).…”

Section: Socs and Tsns In Whole Soil And Aggregatessupporting

confidence: 92%

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Rotation and Organic Fertilizers Stabilize Soil Water-Stable Aggregates and Their Associated Carbon and Nitrogen in Flue-Cured Tobacco Production

Chen

Kawaguchi

et al. 2019

J Soil Sci Plant Nutr

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Long-term mono-cropping and excessive chemical fertilizer application reduce water-stable soil aggregate stability and soil N and C stocks in tobacco production. This study tested the hypothesis that rotation and fertilizer type affected the proportion of water-stable aggregates and aggregate-associated soil organic carbon (SOC) and total soil nitrogen (TSN) concentrations. Two planting systems (tobacco mono-cropping and tobacco-maize rotation) with five fertilizer treatments (0 and 75 kg N ha −1 , 450 kg oil cake + 75 kg N ha −1 , 15,000 kg farmyard manure + 60 kg N ha −1 , and 3000 kg straw + 75 kg N ha −1) were established in 2007. After 10 years, rotation and fertilizer type significantly affected soil aggregates and associated SOC and TSN at different soil depths. Rotation significantly increased mean weight diameter (MWD) and geometric mean diameter (GMD); GMD increased with increasing soil depth. Rotation and organic fertilizer effectively increased the proportion of large macro-aggregates and MWD and GMD, while significantly reducing the proportion of micro-aggregates. The effect of fertilization type and rotation on the SOC content of large macro-aggregates was more obvious than that on TSN content, but there was no significant effect on SOC and TSN contents of aggregates < 250 μm. Rotation and organic fertilizer significantly increased SOC stock and total nitrogen of soil macro-aggregates (> 250 μm). However, this trend weakened with increasing soil depth and decreasing aggregate size. Rotation and organic fertilizers used in tobacco production stabilized the proportion of macro-aggregates in surface soil and maintained SOC and TSN better. Keywords Flue-cured tobacco. Rotation. Organic fertilizer. Water-stable aggregate. Yunnan Abbreviations SOC Soil organic carbon TSN Total soil nitrogen BD Bulk density MWD Mean weight diameter GMD Geometric mean diameter SOM Soil organic matter SOCS Soil organic carbon stock TSNS Total soil nitrogen stock * Congming Zou

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Section: Socs and Tsns In Whole Soil And Aggregatessupporting

confidence: 92%

“…In addition, long-term continuous tobacco cropping and chemical fertilizer Yanjie Chen and Ke Ren contributed equally to this work. use can greatly consume organic carbon and nitrogen, damage the soil structure, and reduce soil quality and productivity (Zou et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Rotation and Organic Fertilizers Stabilize Soil Water-Stable Aggregates and Their Associated Carbon and Nitrogen in Flue-Cured Tobacco Production

Chen

Kawaguchi

et al. 2019

J Soil Sci Plant Nutr

Self Cite

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“…Tobacco can adapt to a wide range of conditions but is very sensitive to the environment. The quality of tobacco is related to various factors, including the climate 4 , 5 , crop rotation patterns 6 , 7 , soil properties 8 , 9 , and soil microbes 10 , 11 . The natural environment is the ecological basis for the development of high-quality tobacco leaves.…”

Section: Introductionmentioning

confidence: 99%

Climatic factors determine the yield and quality of Honghe flue-cured tobacco

Tang

Chen

et al. 2020

Sci Rep

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Flue-cured tobacco (Nicotiana tabacum L.) is a major cash crop in Yunnan, China, and the yield, chemical components, and their proportions decide the quality of tobacco leaves. To understand the effects of environmental factors (soil and climatic factors) on the yield and quality of flue-cured tobacco and determine the main regulating factors, we selected three flue-cured tobacco cultivars [K326, Yunyan87 (Yun87), and Honghuadajinyuan (Hongda)] grown in the Honghe Tobacco Zone. Indices related to yield and economic traits, chemical component properties, soil physical and chemical properties, and climatic factors at different planting sites, were evaluated. We used variance analysis, correlation analysis, and redundancy analysis (RDA) in this study. The results showed that the yield and chemical component properties of flue-cured tobacco, except for the number of left leaves and plant total sugar (PTS) content, were significantly correlated with climatic factors. Particularly, the yield increased in drier and sunnier weather. In terms of the carbon supply capacity, PTS, petroleum ether (PPE), and starch contents (PS) were higher under high-altitude and high-latitude climatic conditions, whereas for the nitrogen supply capacity, plant nitrogen (PTN) and nicotine (PN) contents improved under low-altitude and low-latitude climatic conditions. PTS, reducing sugar (PRS), potassium (PTK), chlorine (PCL), and PPE contents were negatively related to soil clay content, soil pH, and soil organic matter, whereas PRS and PTK contents were positively correlated with alkali-hydrolyzed nitrogen (AN). According to RDA, the soil clay, AN, available phosphorus (AP), and soil chlorine content (SCL) strongly affected the quality of flue-cured tobacco. The quality of the K326 and Yun87 cultivars was mostly influenced by moisture, whereas the quality of the Hongda cultivar was mostly affected by temperature. In conclusion, compared with soil properties, climatic factors more significantly affect the yield and quality of Honghe flue-cured tobacco leaves.

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“…The aggregate size distributions were calculated from the mass collected from the four aggregate size classes (>2,000, 250–2,000, 53–250 and < 53 μm) using the wet sieving method described by Zou, Pearce, Grove, and Coyne (). For each soil sample, two replicate wet iterations of sieving were carried out and the average values were used in the analyses.…”

Section: Methodsmentioning

confidence: 99%

Sustainable effects of gypsum from desulphurization of flue gas on the reclamation of sodic soil after 17 years

Zhao

Wang

et al. 2019

European J Soil Science

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Reclamation of saline–sodic soils with gypsum from the desulphurization of flue gas (FGD) is a recently developed technique. However, limited information is available on the long‐term effects of FGD gypsum in agricultural fields. This study evaluated the effects of FGD gypsum on soil physical and chemical properties and heavy metal concentrations after 17 years. Established in 2001, the study site on the Tumochuan Plain of Inner Mongolia, China, has a sandy loam soil. The experimental field was divided into three classes characterized by small, medium and large exchangeable sodium percentage (ESP) values before the experiment. Based on the initial soil ESP values (6.1–20, 20–30 and 30–78.4%, respectively), FGD gypsum was applied once at rates of 20.9, 30.6 and 59.3 t ha−1 to the small‐, medium‐ and large‐ESP classes, respectively. Compared with the control plots, the treated plots showed decreases in soil pH of 9.8 and 7.5% and decreases in ESP of 52.7 and 46.6% at the 20–40‐cm and 40–60‐cm depths, respectively. The treated plots showed remarkable decreases in electrical conductivity at the 20–60‐cm depth in the small‐ESP class, but moderate increases at the 0–20‐cm depth in the medium‐ and large‐ESP classes. The dissolved salt composition changed, with substantially larger Ca2+ and SO42− but smaller CO32− + HCO3− concentrations in the treated plots than in the control plots. The treated plots showed increases in the macroaggregate fractions (>250 μm) and decreases in the silt–clay fractions (<53 μm). There were no significant differences in the heavy metal (Cd, Hg, As, Pb, Cr, Cu, Zn and Ni) concentrations among the plots; thus, the use of FGD gypsum in agricultural fields is safe. The beneficial effects of FGD gypsum on the reclamation of sodic soils remained and were concentrated deeper in the soil after 17 years. Highlights Limited information is available on the lasting effects of FGD gypsum in agricultural fields. The long‐term effects of FGD gypsum on soil physicochemical properties are reported for the first time. The beneficial effects of FGD gypsum on soil reclamation extended to the 20–60‐cm soil layers. The use of FGD gypsum in agricultural fields was safe, and the effects lasted many years.

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Conservation Practices in Tobacco Production Increase Large Aggregates and Associated Carbon and Nitrogen

Cited by 14 publications

References 50 publications

Rotation and Organic Fertilizers Stabilize Soil Water-Stable Aggregates and Their Associated Carbon and Nitrogen in Flue-Cured Tobacco Production

Rotation and Organic Fertilizers Stabilize Soil Water-Stable Aggregates and Their Associated Carbon and Nitrogen in Flue-Cured Tobacco Production

Climatic factors determine the yield and quality of Honghe flue-cured tobacco

Sustainable effects of gypsum from desulphurization of flue gas on the reclamation of sodic soil after 17 years

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