Timing and conditions modify the effect of structure liming on clay soil

Blomquist, Jens; Berglund, Kerstin

doi:10.23986/afsci.103422

Cited by 3 publications

(4 citation statements)

References 25 publications

(33 reference statements)

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“…4b). This is in line with studies by Blomquist and Berglund (2021) demon strating the importance of timing and soil conditions at structure liming. Using eight variables, all seven trial sites that showed a significant effect of structure liming were correctly classified as suitable for structure liming.…”

Section: The Effect Of Structure Liming Can Be Predictedsupporting

confidence: 91%

Soil characteristics and tillage can predict the effect of ‘structure lime’ on soil aggregate stability

2022

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Context. In Sweden, mixtures of 80-85% ground limestone and 15-20% slaked lime (hereafter, 'structure lime') are used in subsidised environmental schemes to improve aggregate stability and mitigate phosphorus losses on clay soils. Aims. This study investigated different rates of structure lime application and soil variables on aggregate stability on clay soils, and whether soil properties can predict aggregate stability following structure liming. Methods. Increasing application rates of 0-16 t ha −1 of structure lime (SL0, SL4, SL8 and SL16) were tested in 30 field trials in Sweden. Soil aggregates (2-5 mm) were collected 1 year after liming and subjected to two rainfall events in a rain simulator. Key results. Leachate turbidity after the second simulated rainfall event decreased significantly (13% and 20%, respectively, in SL8 and SL16) compared with SL0, indicating improved aggregate stability. There was a near-significant interaction (P = 0.056) between treatment and trial. Grouping by initial pH ðH 2 OÞ (range 6.2-8.3), clay content (10-61%), soil organic matter content (SOM, 2.2-7.1) and clay mineralogy (SmV index, 0.2-3.8) revealed different effects on turbidity. Discriminant analysis of soil characteristics and four tillage variables correctly classified the outcome for 27 of the 30 trial sites. Conclusions. Results show that structure liming can improve aggregate stability 1 year after liming, and can thereby prevent particulate P losses from soils with high clay and SOM content, low SmV index and low initial pH. The discriminant analysis also showed the importance of tillage for the outcome of structure liming. Implications. Clay soil characteristics such as SOM and pH significantly affected aggregrate stability after structure liming.

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Section: The Effect Of Structure Liming Can Be Predictedsupporting

confidence: 91%

Soil characteristics and tillage can predict the effect of ‘structure lime’ on soil aggregate stability

2022

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“…Structure lime in treatment SL proved to be slightly more effective in producing a finer tilth than the ground limestone in treatment GL, as the fraction of coarse aggregates (>5 mm) in SL was significantly lower than in the unlimed control and also than in treatment GL. These results are in line with observed effects of structure lime in previous studies under Swedish conditions (Blomquist 2021). In the present study, seedbed soils were examined in the second crop rotation, in the period 2018-2021, 5-7 years after liming.…”

Section: Discussionsupporting

confidence: 93%

Long-term effects of liming on crop yield, plant diseases, soil structure and risk of phosphorus leaching

Olsson Nyström,

Blomquist,

Persson

et al. 2023

AFSci

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This study examined the long-term effects of applying structure lime (mixture of ~80% CaCO3 and 20% Ca(OH)2) and ground limestone (CaCO3) on soil aggregate stability and risk of phosphorus (P) losses 5–7 years after liming, incidence of soil-borne diseases and yield in winter wheat (Tritium aestivum), oilseed rape (Brassica napus) and sugar beet (Beta vulgaris). Lime was applied in 13 field trials in Sweden 2013–2015 and soil characteristics and crop yield were monitored until 2021. Seedbed (0–4 cm depth) aggregate (2–5 mm size) stability was improved to the same extent with both lime treatments compared to the untreated control, sampled 5–7 years after liming. Analyses and estimations of different P fractions (total P, PO4-P, and particulate P) in leachate following simulated rainfall events on undisturbed topsoil cores sampled 6–8 years after liming revealed lower total P and particulate P concentrations in both lime treatments compared to the untreated control. Two sugar beet trial sites with soil pH ≤7.2 before liming showed an increase in sugar yield for structure lime and ground limestone as an effect of increased concentration of soil potassium (K-AL) and/or lower Aphanomyces root rot potential compared to the untreated control. The yield of winter wheat was not affected by the application of either type of lime at sites with pH >7.2 but the yield of oilseed rape decreased after the application of structure lime.

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“…In that study, the effect on soil aggregate stability after application of quicklime was instant (within two days) and persisted for a monitoring period of three months in three soils with medium clay content (27−40%). Blomquist and Berglund (2021) found that the timing and conditions at application of structure lime affect the outcome, with an early application time (mid-August) giving better results on soil aggregate stability one year after treatment than the normally recommended application time (mid-September). However, three years after treatment in that study there were no differences between the two application dates, and unfavourable soil moisture (too wet) and rain soon after application of the structure lime reduced the effect on soil structure (Blomquist and Berglund 2021).…”

Section: Yieldmentioning

confidence: 98%

“…In the studies by Blomquist et al (2018), Blomquist and Berglund (2021) and Blomquist et al (2022), soil aggregate stability was used as a proxy for the effect of structure liming in Swedish arable soils, particularly in the form of mitigation of P losses from clay soils. Blomquist et al (2022) identified four soil characteristics that determine the effect of structure liming on soil aggregate stability, namely clay content, initial soil pH, soil organic matter (SOM) content and soil mineral index (SmV).…”

Section: Yieldmentioning

confidence: 99%

Mitigating phosphorus leaching from a clay loam through structure liming

Norberg

Aronsson

2022

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

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Phosphorus (P) losses from clay soils can be mitigated by introducing measures for improving soil structure. These include structure liming, where a mixture of CaO or Ca(OH) 2 and CaCO 3 is added to the soil. In a field experiment with separately tile-drained plots on a clay loam in Sweden, we examined the effects of structure liming on leaching of total-P, phosphate P (PO 4 -P) and total nitrogen (N) during three years after initial application. The treatments included two application rates (8 and 16 t ha −1 ) of a common product in comparison with a control (no lime). Effects of structure liming emerged during the second and third year after application, with 45 and 38% lower total-P leaching than in the unlimed control. A significant effect of the application rate was found in the third year. Nitrogen leaching and crop yield were not affected. As expected, soil pH raised following structure lime addition. Measurements of aggregate stability did not confirm the reduction in P leaching, indicating that it is important to measure P concentrations in drainage water directly when assessing the effect of structure liming.

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Timing and conditions modify the effect of structure liming on clay soil

Cited by 3 publications

References 25 publications

Soil characteristics and tillage can predict the effect of ‘structure lime’ on soil aggregate stability

Soil characteristics and tillage can predict the effect of ‘structure lime’ on soil aggregate stability

Long-term effects of liming on crop yield, plant diseases, soil structure and risk of phosphorus leaching

Mitigating phosphorus leaching from a clay loam through structure liming

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