rock phosphate references

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 ...

Single Superphosphate (SSP)

Finely ground phosphate rock (90% <100-mesh) is mixed with sulfuric acid. With rock of 34% P 2 O 5 content, about 0.58 kg of sulfuric acid ( basis) is required per kilogram of rock. ... References. 1. Houghtaling, J., and V. J. Margiotti, Jr. 1994. "'Advanced Ammonia Phosphate Scrubbing With Minimum Water Discharge," IFA …

Solubilization of rock phosphates byRhizobium …

The ability ofRhizobium andBradyrhizobium strains to solubilize phosphate from hydroxyapatite was determined in a medium containing NH4Cl or KNO3. The presence of NH4 + in the medium resulted in higher solubilization of phosphate as compared to the presence of KNO3, with the exception ofR. leguminosarium bv. viceae strain TAL 1236 …

Efficiency of rock phosphate with PSB

E ciency of rock phosphate with PSB M. K. Abbasi et al. Title Page Abstract Introduction Conclusions References Tables Figures J I J I Back Close Full Screen / Esc Printer-friendly Version Interactive Discussion | more ecological but nevertheless e cient P sources, such as use of indigenous rock phosphates (RPs) in our agriculture inputs system.

Defluorinated rock phosphate as a source of phosphorus …

Defluorination of rock phosphate by heat treatment is an important method of producing phosphates suitable for animal feed. A variety of such products have been evaluated as phosphorus sources for ruminants, e.g. Beeson et al. (1945) recorded that a material produced at a low temperature (600°C) was unsatisfactory for steers, but …

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 ...

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 …

(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 ...

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 …

(PDF) Economic Impact of Value Addition to Sri Lankan Rock Phosphate

References (13) Abstract. ... Rock phosphate has been value-added into Hydroxyapatite bio ceramic chemically, their properties were analyzed under several characterization techniques, their ...

Combined applications of manure, rock phosphate and …

The result showed that the application of manure, rock phosphate, and zeolite significantly increased the soil pH and CEC in the soils as well as increased nutrient uptake, 100 seed weight and soybean yield. The 5 t/ha manure, 5 t/ha rock phosphate, and 5 t/ha zeolite (P8) gave the highest the soil pH, CEC, nutrient uptake (N, P, K), 100 …

Apatite | Properties, Occurrence, Uses

Phosphate Rock; Apatite FAQ; References; Chemical composition of apatite. Apatite is a mineral with a relatively complex chemical composition, which can vary depending on the specific type of apatite. The basic formula for apatite is Ca5(PO4)3X, where X can be any one of several ions, including OH-, F-, Cl-, or a combination of …

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, …

[PDF] Effect of single super phosphate and rock phosphate …

A pot experiment was conducted in department of Soil Science and Agricultural Chemistry of College of Agriculture, Central Agricultural University, Imphal (Manipur) during kharif season of 2016, to study the effect of Single Super Phosphate (SSP) and Rock Phosphate (RP) on nutrient uptake of paddy (CAU-R1). Results revealed that phosphorus uptake …

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 …

Structure and thermal behaviors of Moroccan phosphate rock …

A sample of rock phosphate (NP) extracted from the Khouribga region (Morocco) was pretreated to remove soluble impurities associated with the mineral, as reported elsewhere [16]. To obtain various ...

Smoothing the Phosphorus Resource Stress under …

Phosphorus (P) is the key in maintaining food security and ecosystem functions. Population growth and economic development have increased the demand for …

[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 …

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 …

Status of phosphate rock in Zambia; resources and use

This article discusses the geology of the phosphate deposits identified so far, gives a brief description of the production process of partially acidulated phosphate rock (PAPR), and the agronomic results obtained from field trials on finger millet and maize in the high-rainfall area of Zambia. The results from the development work on PAPR show ...

Rock Phosphates in Agriculture | Experimental Agriculture

Summary. The principles that control effectiveness of rock phosphates as fertilizer are now fairly well understood so that the potential effect of a material can be predicted with some confidence from laboratory analysis of the raw material. Soil characteristics, especially acidity, and calcium and phosphate status, are important: if these are ...

The use of 32P isotopic dilution techniques to evaluate the

Isotopic (32 P) dilution approaches have been used to evaluate the extent at which inoculated phosphate-solubilizing bacteria (PSB) and arbuscular mycorrhizal (AM) fungi improve plant use of soil P sources of low bioavailability, either endogenous or added as rock phosphate (RP).This paper firstly examines the conceptual background, the …

Improving rock phosphate availability through feeding, …

DOI: 10.1016/J.BIORTECH.2006.10.015 Corpus ID: 39159386; Improving rock phosphate availability through feeding, mixing and processing with composting manure. @article{Odongo2007ImprovingRP, title={Improving rock phosphate availability through feeding, mixing and processing with composting manure.}, author={Nicholas …

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 …

Phosphate Rock: Origin, Importance, Environmental …

Citations (40) References (125) Abstract. Phosphate rock (PR) is an important mineral resource with numerous uses and applications in agriculture and the …

Rock Phosphate Fertilizer: Apply To Your Garden Now for …

Rock phosphate fertilizer is a type of organic fertilizer that is derived from natural deposits of phosphorus-rich minerals. Phosphorus is one of the three primary macronutrients that plants need in large quantities, along with nitrogen and potassium. It plays a crucial role in photosynthesis, energy transfer, and cell division.

Rock Phosphate: A Slow-Release Phosphorus Powerhouse …

How to Use Rock Phosphate. Incorporating rock phosphate into your gardening regimen is simple: For New Plantings: Mix rock phosphate directly into the soil at planting time, using about 5 pounds per 100 square feet, to encourage strong root development from the start.; For Established Gardens: Broadcast rock phosphate over …