Mathematical modeling of the dissolution of phosphate rock …
However, the predictions of Eq. (14) are not in good agreement of the experimental results for a leaching phosphate rock into sulfuric acid. The gap is substantial for the high reaction time (Fig. 6).The reason of this is that the formation of the solid (gypsum) can clog the pores and the pore diffusion model will be faulty.
Phosphate solubilizing microbes: sustainable approach for …
The role of rock phosphate solubilizing fungi and vesicular arbuscular mycorrhiza (VAM) in growth of wheat plants fertilized with rock phosphate. World J Microbiol Biotechnol. ... Swaby R, Sperber JI. Phosphate Dissolving Microorganisms in the Rhizosphere of Legume, Nutrition Of Legumes; Proc. Univ. Nottingham 5 Th Easter …
Synergistic and Antagonistic Effects of Poultry Manure and Phosphate …
Fertilization of grasslands with mineral phosphorus (P) fertilizer is a common practice in many regions of the world to maintain productivity, especially on soils with high P retention [1,2,3].In order to reduce the use of scarce phosphate rock (RP), alternative P fertilizers need to be found [4,5].In this context, poultry manure, an abundant organic …
Bacteria | Free Full-Text | Rock Phosphate Solubilizing …
The use of cheap and abundant resources such as rock phosphate (RP) can be an alternative strategy for P chemical fertilizers, but the solubilization of P of this source has been a challenge for agricultural researchers. ... Zhao, X.R.; Lin, Q.M. A review of phosphate-dissolving microorganisms. Soil Fertil. 2001, 3, 7–11. [Google Scholar ...
Factors determining rock phosphate solubilization by microorganisms
Forty two soil isolates (31 bacteria and 11 fungi) were studied for their ability to solubilize rock phosphate and calcium phosphate in culture medium. Eight bacteria and 8 fungi possessed solubilizing ability. Pseudomonas cepacia and Penicillium purpurogenum showed the highest activity. There was a correlation between final pH value and titratable …
Phosphate Rock | Mosaic Crop Nutrition
Directly applying unprocessed phosphate rock to soil may provide a valuable source of plant nutrients in specific conditions, but growers must consider several complicating factors and limitations. ... Labs estimate the effectiveness of phosphate rock for direct application by dissolving rock in a solution containing a dilute acid to simulate ...
Utilization of phosphate rock as a sole source of …
Utilization of phosphate rock as a sole source of phosphorus for uranium biomineralization mediated by Penicillium funiculosum Nan Hu,ac Ke Li,ac Yang Sui,b Dexin Ding, *ac Zhongran Dai,ac Dianxin Li,ac Nieying Wangac and Hui Zhangac In this work, uranium(VI) biomineralization by soluble ortho-phosphate from decomposition of thephosphate rock …
Isolation and screening of microorganisms dissolving low-grade rock
Several yeasts, fungi and bacteria isolated from the rhizosphere of leguminous crops and soils of rock phosphate deposit area were found to solubilize low-grade Mussorie rock phosphate. Of the several yeasts and fungi,Schawanniomyces occidentalis, Aspergillus awamori andPenicillium digitatum were better than others in rock phosphate …
The Solubilization of Rock Phosphate by Organic Acids
The basic principle of the biotechnological processing of natural phosphates is the production of organic acids, mainly citric, oxalic, and gluconic acid, that attack and …
Impact of rock materials and biofertilizations on P and K …
The present work evaluated the synergistic effects of soil fertilization with rock P and K materials and co-inoculation with P and K-dissolving bacteria [PDB (Bacillus megaterium var. phosphaticum) and KDB (Bacillus mucilaginosus and B. subtilis)] on the improvement of P and K uptake, P and K availability and growth of maize plant grown …
Cleaner extraction of white phosphorus from …
The phosphate-bearing phase in phosphate rock readily dissolves in molten CaCl 2. •. Pre-electrolysis improves the purity of the P 4 product and the current …
Solubilization of rock phosphate by phosphate solubilizing …
Natural phosphate-bearing material, such as rock phosphate (RP), represents a less costly plant fertilization option but is a limiting nutrient in the plant available form (de Medeiros et al. 2019).Therefore, in the manufacturing of conventional phosphorus (P) fertilizer, high-grade RPs are treated with sulfuric acid at an elevated …
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Phosphate dissolving fungi: Mechanism and application in alleviation …
The present investigation reveals the solubilization efficiency of tri-calcium phosphate (TCP), Udaipur rock phosphate (URP), aluminium phosphate (AP) and ferric phosphate (FP) by Aspergillus niger (ITCC 6719) and Trichoderma harzianum (ITCC 6721) as function of carbon concentrations. Increasing glucose concentration from 1 to 7% in …
Improved rock phosphate dissolution from organic …
To fill this objective, we screened the capacity of bacteria isolated from 3 soils to solubilize rock phosphate in vitro in presence of NH4+or NO3-. Then, we selected the most efficient bacterial strains to …
Phosphate-Solubilizing Microorganisms: Mechanism …
One such strategy is the application of phosphate-solubilizing microorganisms which can solubilize insoluble phosphates in soil by different mechanisms like secretion of …
Isolation and selection of highly effective phosphate …
It is a major limiting factor for plant growth due to its low availability for root uptake when it presents as rock phosphate. Therefore, it becomes quite common to use chemical fertilizers in ensuring phosphorous requirements to soil. ... Ostwal KP (1972) Influence of phosphate dissolving Bacilli on yield and phosphate uptake of wheat crop ...
Improved efficiency of Sedum lineare (Crassulaceae) in
Request PDF | Improved efficiency of Sedum lineare (Crassulaceae) in remediation of arsenic-contaminated soil by phosphate-dissolving strain P-1 in association with phosphate rock | The selection ...
Phosphate-dissolving bacteria in the rhizosphere of some …
Rhizospheres ofTrifolium alexandrinum andPhaseolus aureus appear to provide more suitable environment for phosphate-dissolving organisms than those ofCrotalaria juncea andSesbania aculeata. SummaryTwelve phosphate-solubilising organisms were isolated from the rhizosphere of four cultivated legumes growing in four soil regions of India. …
A STUDY OF SOIL BACTERIA DISSOLVING CERTAIN MINERAL PHOSPHATE
None of the isolates showed dissolving ability on agar media containing gafsa rock phosphate, variscite, strengite or taranakite. However, when an analytical method was used, 82% of the isolates tested proved able to release phosphate from gafsa rock phosphate, though to a much lesser extent than from dicalcium phosphate.
Activity of phosphate-dissolving bacteria in Egyptian soils
The effectiveness of Phosphobacterin on soil of the Kustanian region in relation to their method of cultivation. Agrobiologiya 4, 604–614. Soils and Fert. 23, 38. Raghu, K. and MacRae, I. C., Occurrence of phosphate dissolving microorganisms in the rhizosphere of rice plants and in submerged soils. J.
ENHANCEMENT OF ROCK PHOSPHATE APPLICABILTY …
enhancement of applicability of rock phosphate by addition of compost and inoculation with phosphate dissolving bacteria and its effect on quality and productivity of canola plant. The experiment included 3 factors as follows: (1) three rates of rock phosphate i.e. 0 (RP 0), 250 kg ha-1 (RP 1) and 500 kg ha-1 (RP 2
SOLUBILIZATION OF PHOSPHATE ROCK BY ORGANIC …
Effect of organic acids on phosphate rock solubilization. Figure 1 shows the solubilization efficiency for three phosphate sources on nine organics acids, two inorganic acids and …
Improved efficiency of Sedum lineare (Crassulaceae) in
The effects of inoculation of Acinetobacter sp. phosphate solubilizing bacteria P-1 a … Improved efficiency of Sedum lineare (Crassulaceae) in remediation of arsenic-contaminated soil by phosphate-dissolving strain P-1 in association with phosphate rock
Electron microscopy of some rock phosphate dissolving …
Bacteria Pseudomonas striata, Bacillus polymyxa, B. megaterium and B. pulvifaciens, and fungi Aspergillus awamori, A. niger and Penicillium digitatum dissolve tricalcium phosphate and, much less, Mussorie and Udaipur rock phosphate. The solubilizing power of fungi was higher than that of bacteria, t …
Phosphate-solubilizing bacteria: Their agroecological …
The phosphorus dissolving and growth promoting properties of PSB are summarized. ... Isolation of phosphate solubilizing bacteria from maize rhizosphere and their potential for rock phosphate solubilization-mineralization and plant growth promotion. Geomicrobiol J., 34 (1) (2017), pp. 81-95, 10.1080/01490451.2016.1146373.
Factors influencing dissolution of phosphate …
Factors influencing dissolution of phosphate rock and oxidation of elemental sulphur in some New Zealand soils. New Zealand Journal of Agricultural Research, 1987, Vol.3D: …
Life | Free Full-Text | Isolation of Phosphate-Solubilizing
As phosphorus (P) bioavailability is limited in arable lands, chemical fertilizers are being used by farmers to increase crop production. Phosphate-solubilizing microorganisms (PSMs) increase the bioavailability of sparingly soluble inorganic and organic soil phosphorus. Therefore, the current study was an effort to evaluate the …
Phosphate-Solubilizing Bacteria: Advances in Their …
Siderophores are small molecules with low molecular weights, and under low iron stress, phosphate-dissolving bacteria produce siderophores that chelate Fe 3+, Al 3+ and Ca 2+ in the soil, ... The Relationship Between Rock Phosphate Solubilization and pH and Organic Acid Production of Microorganisms. J. Microbiol. 2003; 23:5–7. [Google …
(PDF) The role of fungi phosphate and organic matter dissolving …
The experment included the study and meki comparision for sample of many species of fungi genes into melting the phosphate rock in the soil and it is action in the growth of the wheat plant by ...