Clay Addition to Sandy Soil Reduces Nutrient Leaching—Effect of Clay Concentration and Ped Size

Tahir, Shermeen; Marschner, Petra

doi:10.1080/00103624.2017.1395454

Cited by 48 publications

(31 citation statements)

References 17 publications

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“…The smaller the silica-alumina ratio and the silica-sesquioxide ratio, the higher the weathering degree of the soil [19]. Generally speaking, clay soil with a low silica-sesquioxide ratio has a stronger ability to adsorb and withhold phosphorus than sandy soil [60]. In this study, the silica-alumina ratio and silica-sesquioxide ratio of bulk soil sample A were 5.43 and 4.66, respectively, and those of bulk soil sample B were 5.59 and 4.80, respectively, indicating that the weathering intensity in the study area was weak, resulting in a lower ability of soil to adsorb phosphorus (Figure 5).…”

Section: Discussionmentioning

confidence: 99%

The Influence of Mechanical Composition and Mineral Composition of Calcareous Soil on Slope Farmland on Phosphorus Fixation

Han

Yin

2021

Applied Sciences

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Soil erosion on slope farmland causes the degradation of soil quality and eutrophication of water bodies due to the loss of phosphorus. In order to explore the influence of soil mechanical composition and mineral composition on phosphorus fixation, we selected calcareous soil on slope farmland in the Three Gorges Reservoir area as the research object and separated the samples on the basis of particle size. Next, we determined the content of different forms of phosphorus for each particle size, and then characterized and analyzed the mineral composition. The adsorption performance of each particle size was also studied. The results show that the calcareous soil on slope farmland has a high proportion of coarse fractions, and the carbonate minerals enriched in coarse fractions will fix a large amount of phosphorus and degrade soil quality. As slope farmland is prone to soil erosion, when the soil undergoes selective migration, the loss of fine fractions will increase the proportion of coarse fractions and aggravate soil quality degradation. Meanwhile, because of the large amount of phosphorus adsorbed by fine fractions, the available phosphorus is easily lost with fine fractions, leading to eutrophication of water bodies.

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Section: Discussionmentioning

confidence: 99%

The Influence of Mechanical Composition and Mineral Composition of Calcareous Soil on Slope Farmland on Phosphorus Fixation

Han

Yin

2021

Applied Sciences

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“…Soil whose particle fraction is dominated by sand has a high permeability, this will cause the leaching rate of nutrients in the soil to be very high [15]. As a result, the availability of the nutrient is low to very low.…”

Section: Characteristic Of Post-mining Landmentioning

confidence: 99%

Coastal Sediment as an Ameliorant in Post-Mining Land Management

Sulakhudin¹,

Suswati²

2021

Coastal Environments

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Coastal sediment is a sediment resulting from sedimentation of eroded materials from up land through river flows that are deposited around the coast. It usually contains a lot of alkaline cations, especially Na so that it is good enough to decrease soil acidity. The use of coastal sediment must be considered carefully because it has a high level of salinity, which can inhibit plant growth and even cause death. Coastal sediment as an ameliorant can replace the role of lime in increasing the pH and base saturation of soil. Applying coastal sediment to sandy or post-gold mining soils can reduce soil acidity, increase soil CEC and soil base saturation, as well as the availability of nutrients, especially nutrients, phosphorus, potassium, calcium and magnesium. Improvement of some of these soil properties will encourage increased growth and crop yields in post gold mining land.

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“…Due to the texture of these soils, organic matter (OM) is mineralised at a higher rate, leading to reduced fertility [2]. Fertilisation is less effective on these soils, as the nutrients added with mineral fertilisers have low colloid content and are easily leached [3]. On such soils irrigation and/or soil amelioration are prerequisites for safe cultivation, especially in the case of less drought-resistant crops like maize.…”

Section: Introductionmentioning

confidence: 99%

Fertility Impact of Separate and Combined Treatments with Biochar, Sewage Sludge Compost and Bacterial Inocula on Acidic Sandy Soil

et al. 2020

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The short-term effects of processed waste materials: sewage sludge compost (up to 0.5%), biochar made of paper sludge and grain husk (BC) (up to 2%) combined with plant growth-promoting rhizobacterial (PGPR) inoculum, on the fertility of acidic sandy soil at 65% of field capacity were tested in a pot experiment in separate and combined treatments. The soil pH, organic matter content, total and plant-available nutrients, substrate-induced respiration, arbuscular mycorrhizal fungal (AMF) root colonisation parameters and maize (Zea mays L.) biomass were investigated in experiments lasting two months. The positive priming (21% organic matter loss) induced by BC alone was not observed after combined application. The combination of compost and PGPR with 1.5% BC resulted in 35% higher P and K availability due to greater microbial activity compared to BC alone. Only compost applied alone at 0.5% gave a 2.7 times increase in maize biomass. The highest microbial activity and lowest AMF colonisation were found in combined treatments. In the short term the combined application of BC, compost and PGPR did not result in higher fertility on the investigated soil. Further research is needed with a wider range of combined treatments on acidic sandy soil for better understanding of the process.

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Clay Addition to Sandy Soil Reduces Nutrient Leaching—Effect of Clay Concentration and Ped Size

Cited by 48 publications

References 17 publications

The Influence of Mechanical Composition and Mineral Composition of Calcareous Soil on Slope Farmland on Phosphorus Fixation

The Influence of Mechanical Composition and Mineral Composition of Calcareous Soil on Slope Farmland on Phosphorus Fixation

Coastal Sediment as an Ameliorant in Post-Mining Land Management

Fertility Impact of Separate and Combined Treatments with Biochar, Sewage Sludge Compost and Bacterial Inocula on Acidic Sandy Soil

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