Genomic and phenotypic analysis of rock phosphate …
The results showed that both strains are capable of solubilizing RP and TCP. Herbaspirillum sp. AP21 released phosphate from RP until day 12, with 0.055 mg L −1 ( Fig. 2 A). The pH decreased slightly in the medium from 7.68 to 6.90, and the bacterial population was between 6 × 10 7 CFU mL −1 and 4 × 10 7 CFU mL −1.
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Isolation and Evaluation of Rock Phosphate Solubilizing …
A fungus, Penicillium sp. PS-113, isolated from soil showed the high phosphate-solubilizing activity in potato dextrose broth-rock phosphate to produce free phosphates to the culture broth with ...
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(PDF) ROCK PHOSPHATE: ITS AVAILABILITY AND …
References (89) Abstract. A high grade quality rock phosphate is an essential requirement for manufacturing of phosphatic fertilizers. In India, 15.3 mt of indigenous deposits of high grade...
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(PDF) Phosphate Rocks: A Review of Sedimentary and
Phosphate rock is a non-renewable resource and an important component for phosphorous-based chemicals and the production of fertilizers (Gharabaghi et al., 2010;Mohammadkhani et al., 2011). >70 wt ...
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Characterization and Mechanisms of Biosolubilization of Rock Phosphate …
Rock phosphate (RP) is the main natural source of phosphorous and is used as raw material for the manufacturing of conventional phosphate fertilizers (Xiao et al. 2013).The rocks contain a high percentage of the insoluble apatite group of minerals, and the general formula is Ca 5 (PO 4) 3 (OH, F, Cl). The apatite is referred to as hydroxy, …
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Phosphate Rocks: A Review of Sedimentary and Igneous …
Abstract: 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 …
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Phosphorus Fertilizer: The Original and …
Earlier the original source of phosphorus (P) fertilizer was bones; as time passes, the supply of P fertilizer will get exhausted. Today, rock phosphate is the only raw material in the form of P fertilizers. …
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Biotechnological solubilization of rock phosphate on
Rock phosphate (RP) is an important natural material traditionally used for the production of phosphorus (P) fertilizers. Compared with chemical treatment, microbial solubilization of RP is an ...
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Solubilization of rock phosphate by rape | Plant and Soil
Abstract. Local rhizosphere acidification by rape as a reaction to P-starvation was visualized by means of an agar plate technique. By means of a modification of this technique local differences in cation-anion uptake and organic acid exudation along intact roots of rape were observed for plants grown on nutrient solution with or without added ...
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Phosphorus availability from rock phosphate: Combined
Request PDF | On Nov 1, 2016, M.A. Bustamante and others published Phosphorus availability from rock phosphate: Combined effect of green waste composting and sulfur addition | Find, read and cite ...
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Arbuscular mycorrhiza fungi applications and rock phosphate …
The effect of AMF and rock phosphate fertilizer treatments was significantly different on salicylic acid and phenolic compounds in the leaf (Table 2). Salicylic acid content in plant colonized with AMF was significantly different from control in 4 and 8 months after inoculation, but was not significantly different between Glomus intraradices ...
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[PDF] Rock phosphate-potassium and rock-solubilising …
Classical, soluble fertilisers create environmental and economic problems. As an alternative, we studied the direct applications of phosphate rock and potassium rock in conjunction with phosphate-solubilising bacteria and potassium-solubilising bacteria for cultivation of hot pepper Capsicum annuum L. Our findings show that integration of P …
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Factors determining rock phosphate solubilization by …
A high correlation was observed between final pH and soluble phosphate only for the rock phosphates inoculated with the highest concentration of solubilizing bacteria (r=−0.73 to −0.98). Forty two soil isolates (31 bacteria and 11 fungi) were studied for their ability to solubilize rock phosphate and calcium phosphate in culture medium. …
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Phosphate Rock
Description. The term phosphate rock (or phosphorite) is used to denote any rock with high phosphorus content. The largest and least expensive source of phosphorus is …
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Chemical and Physical Mechanisms of Fungal Bioweathering of Rock Phosphate
Rock phosphate. The rock phosphate used (Gardener's Direct, Hertford, UK) contained 13% P with an aqueous suspension having a pH of 6.6. The RP was milled in a 25 mm ceramic cylinder with 20 mm diameter ceramic balls at a frequency of 30 beats/s for 1 min in an MM2000 ball mill (Glen Creston Ltd., London, UK) and sieved to obtain …
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Rock Phosphate
Rock Phosphate: an organic source of phosphorus. Rock phosphate is found in all continents of the world (figure 1). It is used as a raw material in the manufacture of inorganic phosphorus fertilizers and can be used as organic phosphorus fertilizers when applied directly to the soil. ... References: 1. Hu et al (1996) The effect of direct ...
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The Solubilization of Rock Phosphate by Organic Acids
Bases of the production of phosphoric fertilizers are classical methods involving acid dissolution of rock phosphates. The development of new methods applicable both to high-quality and low-quality phosphates is important for solving technological and ecological problems and to increase the economical effectiveness of phosphorus fertilizer …
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Improving the short-term efficiency of rock phosphate
The use of reactive rock phosphate (RP) in acidic soils as a phosphate (P) source for pastures and crops presents attractive economic advantages with respect to soluble phosphate. However, some studies have demonstrated that the short-term (1-year) efficiency of RP, compared with that of water-soluble P, is relatively poor. This fact …
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Rock Phosphate and Phosphorus Solubilizing Bacteria Effect …
A field experiment was carried out at The Agronomy Research Farm, The University of Agriculture Peshawar, during rabi season 2020–2021 to evaluate levels of rock phosphate (100, 200, 300, 400 and 500 kg ha−1) and two consortium of phosphorus solubilizing bacteria including PSBc1 (Pantoea sp., Klebriella sp., Brevibacterium sp., …
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Phosphate rock price forecast 2015-2024 | Statista
The price of phosphate rock, which is used in the production of phosphate fertilizers, stood at 266 U.S. ... Detailed references; $199 USD / Month * Professional Account. Full access.
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Phosphate rock: origin, importance, environmental …
Abstract. Phosphate rock (PR) is an important mineral resource with numerous uses and applications in agriculture and the environment. PR is used in the …
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Rock phosphate improves nutrient uptake and oil …
Phosphate (P) is the second key nutrient required by plants and its bioavailability is associated with plant growth (Fonseca et al., 2020).In soil, P is present in both inorganic and organic forms, but due to its capability to form complexes with other soil constituents, only minor amounts can be taken up by plants (Singh and Reddy …
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Phosphate mineral | Description, Uses, & Facts | Britannica
Phosphate mineral, any of a group of naturally occurring inorganic salts of phosphoric acid. Phosphates can be grouped as: primary phosphates that have crystallized from a liquid; secondary phosphates formed by the alteration of primary phosphates; and rock phosphates formed from phosphorous-bearing organic material.
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The long-term residual value of rock phosphate and
In three, long-term field experiments on different lateritic soils in south-western Australia, the effectiveness of superphosphate and rock phosphate fertilizers applied 10 years (one experiment) or 4 years previously was measured relative to the effectiveness of freshly-applied superphosphate (relative effectiveness or RE) using several different plant …
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Winter wheat response to rock phosphate and the role of …
Rock phosphate acidulation flask experiments. 0.5 g rock phosphate was added to several conical flasks along with 20 mL of 1M sulfuric acid. After 49 days the mixture was neutralized to pH 7 and diluted to 100 mL with Milli-Q water. ... References. Lipman, J., G. and H. McLean, C., Vegetation experiments on the availability of treated ...
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Minerals | Free Full-Text | Phosphate Rocks: A Review …
References. Filippelli, G.M. Phosphate Rock Formation and Marine Phosphorus Geochemistry: The Deep Time Perspective. Chemosphere 2011, 84, …
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Phosphorite | SpringerLink
1 Citations. Part of the book series: Encyclopedia of Earth Sciences Series ( (EESS)) Download reference work entry PDF. Phosphorite (often referred to as phosphate rock) …
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Rock Phosphate in Agriculture: Fertilizer Uses, …
Rock phosphate is a vital fertilizer used in agriculture. It is used to make phosphates, a key ingredient in fertilizers, and helps crops grow. Rock phosphate comes from deposits of phosphatic rock and is …
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Solubilization of rock phosphate by rape | Plant and Soil
Rape and sunflower were compared with respect to their rock phosphate mobilizing capacities, cationanion balance and uptake of Ca and NO3 at P-starvation. Rape was able to mobilize P from rock phosphate, whereas sunflower was not.When grown on a complete nutrient solution with NO3 as the only nitrogen source, both species took up …
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Rock phosphate | Feedipedia
Rock phosphate contains about 75% tricalcium phosphate. It should not be used unless it is guaranteed to contain less than 0.5% fluorine. Rock phosphates from some areas (e.g., Curacao) are low in fluorine, whereas those from other areas must be defluorinated before they can be used. Defluorination of rock phosphate is an industrial process ...
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