· Different P fertilizer sources such as high-solubility (simple superphosphate, SSP), low-solubility (rock phosphate, RP) and complex superphosphate (CSP) are available for plant supplementation. The objective of this study was to investigate the short- and long-term redistribution of soil P after application of different P sources at
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· It is urgent to find ways to utilise the accumulated recalcitrant phosphorus (P) in soil, as natural rock phosphate reserves are at a verge of depletion. Phosphate-solubilising microorganisms (PSMs) can be a cost-effective and eco-friendly approach to address the problem. A pot culture experiment was carried out to evaluate the changes
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:Publish Year:2021Phosphorus Availability in Soil · occluded phosphate or Fe oxide-occluded phosphate, respectively, was added to a subsoil low in available phosphates. It is shown that both plant species were not able to acquire P from Al
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:Plant Available PhosphateOccluded Phosphates · In a future world, with an assumed absolute shortage of mineral P fertilizer, agricultural soils worldwide will be depleted by between 4–19 kg ha −1 yr −1, with
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· Quantifying soil P fractions is essential for understanding soil P cycling because these fractions are potential sources of bioavailable P. Here, we investigated whether soil P fractions (i.e., labile inorganic P [Pi], intermediately available Pi, organic P, occluded P, and apatite P) differed among three tropical forests at different stages of
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· Soil potential labile but not occluded phosphorus forms increase with forest succession Biology and Fertility of Soils, 52 (2016), pp. 41-51 CrossRef View in Scopus Google Scholar Zhang et al., 2016b L. Zhang,
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Rock phosphate, the primary raw material for fertilizer and phosphoric acid, occurs as high-grade ore (+30% P2 O 5 ), medium-grade ore (20%–30% P 2 O 5 ), and low-grade ore (15%–20% P 2 O 5 ). The very high-grade ore blends with medium-grade ore for direct sale. The high-grade ore is mined, crushed, and sold to various fertilizer plants.
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RESEARCH ARTICLE Effects of phosphate-solubilizing bacteria application on soil phosphorus availability in coal mining subsidence area in Shanxi Xiao-Kai Shi a,b, Juan-Juan Maa and Li-Jun Liu b aCollege of Water Conservancy Science and Engineering, Taiyuan University of Technology, Taiyuan, China; bShanxi Academy of Environmental
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· Rock Phosphate (RP), derived from natural apatite mined from Eppawala (ERP), is identified as a possible substitute for Triple Super Phosphate (TSP). However, its application is limited due to low
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· While methodologies for fertility indices and labile P are well established, methods for quantifying less labile P, such as the occluded and resistant or residual P, are less well established. We reexamined existing methods for these pools, and suggested new procedures to improve their precision and timeliness.
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· Artificially prepared Al oxide‐occluded phosphate or Fe oxide‐occluded phosphate, respectively, was added to a subsoil low in available phosphates. It is shown that both plant species were not able to acquire P from Al oxide‐occluded phosphate. Also, maize was incapable of using Fe oxide‐occluded phosphate.
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· Phosphate rocks are a vital resource for world food supply and security. They are the primary raw material for phosphoric acid and fertilizers used in agriculture, and are increasingly considered to be a potential source of rare earth elements. Phosphate rocks occur either as sedimentary deposits or igneous ores associated with alkaline
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· Rock phosphate (RP) can be also used as a substitute to mineral P fertilizers as it is natural, cheap and easily available source of P. It is basically a tri-calcium phosphate, which contains 15–20% P, but its release is very slow in
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:Soil SciencePublish Year:2021Phosphorus Availability in SoilOccluded P · Manure + phosphate rock significantly (p = 0.0001) increased soil organic carbon by 74% and 32%, respectively, compared to the sole manure and sole
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· Rock phosphate is a non-renewable resource and a basic raw material of all the water soluble aluminum (Al) P, Ca-P, occluded P, water-soluble K, exchangeable K, and nonexchangeable K over
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· Rock phosphate (RP) can be also used as a substitute to mineral P fertilizers as it is natural, cheap and easily available source of P. It is basically a tri-calcium phosphate, which contains 15–20% P, but its release is very slow in alkaline soils. In addition, RP is).
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occluded phosphate or Fe oxide-occluded phosphate, respectively, was added to a subsoil low in available phosphates. It is shown that both plant species were not able to
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· The effect of phosphate-solubilizing bacteria (PSB) application on phosphorus (P) availability in reclaimed soil in coal mining subsidence region was investigated. Seven treatments were carried out including control, chicken manure (CM), PSB, PSB + tricalcium phosphate (TCP), CM + TCP, PSB + ground phosphate rock
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· Sedimentary phosphate rocks are characteristically rich in organic matter, and contain sulfides and a high concentration of trace elements, including cadmium (Cd), which is harmful to the human body. The mining of phosphate rock and phosphogypsum at Qingping has expanded the release of Cd into groundwater and farmland soil. To prevent
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· Also, maize was incapable of using Fe oxide-occluded phosphate. In contrast, white lupin took up significant amounts of P from Fe oxide-occluded phosphate. Conclusion: It is concluded that the strategy to form cluster roots together with their reducing power may allow white lupin to destabilize Fe oxides that occlude phosphates and to
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· The soil type is a well-drained clay loam red soil developed from slate and shale parent rock. Soil potential labile but not occluded phosphorus forms increase with forest succession Biol. Fert. Soils, 52 (1) (2016), pp. 41
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· Abstract. Most phosphorus (P) in soils is unavailable for direct biological uptake, as it is locked within primary or secondary mineral particles, adsorbed to mineral surfaces, or immobilized inside of organic material. Deciphering the composition of different P forms in soil is critical for understanding P bioavailability and its underlying dynamics.
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· Electrodynamic cleaning techniques for removing and recycling soluble impurities (phosphorus, fluorine, Sr, Pb, Cr, Cu, and Mn) in nitric acid leaching residues of phosphate rock (NG) were investigated. The PO 4 3− concentration of
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· Al oxide-occluded phosphate and Fe oxide-occluded phosphate were applied and compared to a soluble phosphate form, namely Ca(H 2 PO 4) 2. Whereas the addition of Ca(H 2 PO 4 ) 2 significantly increased the dry mass of maize and white lupin, Al oxide-occluded phosphate showed no effect (Fig. 1 ).
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In acidic solution, CaP-N released calcium and phosphate ions thanks to the preferential β-tricalcium phosphate phase dissolution. Enamel remineralization was induced by CaP-N comparably to CaP-S, while CaP-N exhibited a superior dentinal tubule occlusion than CaP-S, forming mineral plugs and depositing new nanoparticles onto demineralized
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· Artificially prepared Al oxide-occluded phosphate or Fe oxide-occluded phosphate, respectively, was added to a subsoil low in available phosphates. It is shown that both plant species were not able to acquire P from Al oxide-occluded phosphate.
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:Occluded PhosphatesPlant Available PhosphateThe prevalence of soil acidity is associated with phosphorus (P) insufficiency and aluminum saturation. We conducted a two-seasons experiment to evaluate soil phosphorus availability and exchangeable
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· Better root development for trees and grass. Improving the flavor of vegetable and fruit crops. Deterring soil pests. Rock phosphate fertilizer is slow-release and an ideal way to keep soil calcium levels from getting too low during the growing season so your plants can continue to flourish. This organic fertilizer also works in tandem with
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:Publish Year:2021Soil · However, it is generally assumed that occluded phosphate is not plant-available. Results: In a pot experiment, two plant species, namely maize ( Zea mays L.)
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The use of a calcium phosphate precipitation method occluded dentin tubules with apatitic mineral and, thus, showed good potential for the treatment of dentin hypersensitivity. The aim of this study was to elucidate the occluding behavior of the precipitate in the oral environment. Dentin disks trea
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