Dynamics of soil aggregate stability as induced by potassium in a soil-plant system

Aramrak, Surachet; Chittamart, Natthapol; Wisawapipat, Worachart; Rattanapichai, Wutthida; Phun-Iam, Mutchima; Aramrak, Attawan

doi:10.1080/00380768.2021.1939151

Cited by 3 publications

(4 citation statements)

References 24 publications

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“…Similarly, Aramrak et al. (2021) reported that aggregate stability significantly increased from 74% to 96% in kaolinitic soil within 24 h of the application of potassium. Therefore, the commonly used 50 g initial mass for PSD analysis may underestimate the clay %, especially in samples of medium to heavy textured tropical soils.…”

Section: Discussionmentioning

confidence: 84%

Effects of sample mass and suspension salinity on particle size distribution in predominantly medium to heavy textured soils using the hydrometer method

Wuddivira,

Bramble,

Ramlochan

et al. 2023

J. Plant Nutr. Soil Sci.

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BackgroundParticle size distribution (PSD) is a fundamental soil measurement that is crucial for agriculture, engineering, hydrological, and environmental applications as well as in basic research such as in developing water release curves in flow and transport modeling. The accurate determination of PSD, particularly clay content, is especially critical in ascertaining the magnitude and rates of many physical, chemical, and hydrological processes in soils. The accuracy of the hydrometer method for PSD, which relies on the settling velocity of soil particles in a soil suspension, could be affected by the density of the suspension, which in turn, depends on the initial sample mass, texture, and mineralogy of the soil.AimsWe hypothesized that (1) initial mass determines the concentration and the physical interaction of particles in a soil suspension and affects particle settlement, recovery, and the accuracy of the hydrometer method, and (2) the widely used initial air‐dry mass of 50 g underestimates the clay percentage of medium to heavy textured tropical soils. The objective of this study was to investigate the effect of mass and KCl on clay recovery in tropical soils with varying texture and mineralogy using the hydrometer method.MethodsThe experiment comprised seven soils, four soil masses (10, 20, 30, 50 g), and two KCl treatments in a 7 × 4 × 2 factorial design replicated three times.ResultsResults showed a general trend of increasing estimates of clay % as the soil mass decreased from 50 to 10 g and the KCl concentration increased from 0 to 0.0025 M. This implies that using an initial sample mass of 50 g in sedimentation methods, underestimates, and 10 g overestimates the clay % in predominantly medium to heavy textured tropical soils. Interestingly, there was a drastic change in texture for most of the soils as the sample mass decreased to 10 g.ConclusionsWe conclude that the initial air‐dry mass affects the clay recovery of medium to heavy textured humid tropical soils. Results suggest that the ideal initial mass for these soils lies between 20 and 30 g. Furthermore, the mechanistic pathway that drives the observed decrease in clay recovery as soil sample mass increase could be due to the flocculating tendency of KCl.

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Section: Discussionmentioning

confidence: 84%

Effects of sample mass and suspension salinity on particle size distribution in predominantly medium to heavy textured soils using the hydrometer method

Wuddivira,

Bramble,

Ramlochan

et al. 2023

J. Plant Nutr. Soil Sci.

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“…Regardless of pH, CaSO 4 is a good Ca 2+ additive when Ca 2+ is needed. CaCO 3 can also provide Ca 2+ , but CaSO 4 is 150-200 times more soluble than it (Aramrak et al 2021). The clay particles in soils were either coated or cemented by carbonate.…”

Section: Discussionmentioning

confidence: 99%

“…In other words, the presence of high-content carbonates and bivalent Ca 2+ cations can flocculate clay particles and these particles then act as larger particles (macro-aggregates) in soils, which are not easily disturbed, thus increasing soil structural stability (Safar and Whalen 2023). On the other hand, increasing monovalent K + in the soil solution increases the attractive energy between clay particles, i.e., it increases clay-to-clay bonds, where K + is a good flocculant (Aramrak et al 2021;Arienzo et al 2012). Increasing the interaction force between soil particles is an important factor influencing the enhancement of soil structural stability (Hu et al 2018;Liu et al 2023).…”

Section: Discussionmentioning

confidence: 99%

Amelioration with nano-sulfur suspensions mitigates calcium carbonate of calcareous sandy soil

EL-Madah,

Ibrahim,

Abd El-Halim

2024

Egypt.J. Soil Sci.

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USE of nano-sulfur (NS) as a suspension to mitigate calcium carbonate (CaCO 3 ) of calcareous sandy soil is a new strategy and has not yet been tested. In a pot experiment, this study evaluated four NS suspensions containing 15, 30, 60, and 90 kg NS ha −1 , plus the control (distilled water only, 0 NS). Pots were incubated under laboratory conditions for two months. Then, total, active, and active/total CaCO 3 , as well as the CaCO 3 -related properties were estimated. The suspension containing 90 kg NS ha −1 was superior, while that containing 30 kg NS ha −1 was optimum. However, from an economic perspective, the suspension containing 15 kg NS ha −1 was preferred. With the optimum suspension, active, total, and active/total CaCO 3 reduced by about 24%, 40%, and 22% compared to the control, respectively. Furthermore, the CaCO 3 -related properties, such as pH decreased by 0.48 unit and sodium adsorption ( Na-adsorption ) ratio by 18%, while soluble Ca 2+ , K + , SO 4 2− , water stable aggregate index, and macro-to micro-pores ratio increased by about 100%, 44%, 19%, 33%, and 60% compared to the control, respectively. In general, the optimal active CaCO 3 for better soil properties improvement is less than 10%. The NS suspension has a high corrective power on CaCO 3 and its related properties in the short term (60 days). However, regular application is recommended to continue pH reduction and neutralize CaCO 3 . Therefore, NS suspension may be an effective option when an immediate reaction from the amendment is needed, especially at critical stages of growth.

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“…Moreover, most researches only compared the aggregate stability under different fertilization managements at a certain time [11,12]. Few studies quantitatively considered the effects of different fertilization regimes and rice growth stages on soil aggregates and its carbon (C) dynamics in rhizosphere and bulk soil [13].…”

Section: Introductionmentioning

confidence: 99%

The Combined Application of Mineral Fertilizer and Organic Amendments Improved the Stability of Soil Water-Stable Aggregates and C and N Accumulation

Chen

et al. 2022

Agronomy

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Soil aggregate stability is one of the important physical properties affecting rice (Oryza sativa L.) production and soil sustainability. This study was undertaken to evaluate the influence of different medium-term fertilization regimes on soil aggregate stability and aggregate-associated carbon (C) and nitrogen (N) in rhizosphere and bulk soil. This experiment consisted of three treatments, including mineral fertilizer alone (NPK), mineral fertilizer plus rice straw (NPK + RS), and controlled-release blended fertilizer plus cattle manure (CRF + CM). Although higher fertilizer costs were in the CRF + CM treatments, one-time application could save labor costs compared to the conventional split application of chemical fertilizers. The results showed that, compared to the NPK alone, the combined application of NPK with organic amendments improved the proportion of >0.25 mm macroaggregate, soil organic carbon (SOC), total nitrogen (TN) concentrations, and mean weight diameter (MWD) in both rhizosphere and bulk soil during the whole rice growing season. In rhizosphere, the proportion of macroaggregate was significantly positively (p < 0.01) correlated with root biomass while it had no significant correlation with SOC in the proportion of all sizes of aggregates. By contrast, bulk soil had a significantly (p < 0.01) positive relationship between the proportion of >2 mm class and organic C associated with smaller particle-sized aggregates (0.25–2 mm and <0.25 mm). In addition, the organic C associated with 0.25–2 mm showed the largest contribution of the total SOC content in all treatments during the rice growing stage. Overall, the results suggested that the medium-term application of mineral fertilizer with organic amendments was beneficial to improve soil aggregate stability and C and N accumulation.

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Dynamics of soil aggregate stability as induced by potassium in a soil-plant system

Cited by 3 publications

References 24 publications

Effects of sample mass and suspension salinity on particle size distribution in predominantly medium to heavy textured soils using the hydrometer method

Effects of sample mass and suspension salinity on particle size distribution in predominantly medium to heavy textured soils using the hydrometer method

Amelioration with nano-sulfur suspensions mitigates calcium carbonate of calcareous sandy soil

The Combined Application of Mineral Fertilizer and Organic Amendments Improved the Stability of Soil Water-Stable Aggregates and C and N Accumulation

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