Results 281 to 290 of about 1,392,926 (349)

Screening for rock phosphate solubilizing Actinomycetes from Moroccan phosphate mines

Applied Soil Ecology, 2008
Three Moroccan phosphate mines, an original biotope rich in insoluble rock phosphate (RP), were explored for the presence of RP solubilizing Actinobacteria. Three hundred actinomycete isolates originating from these mines were tested for their ability to grow on a synthetic minimum medium (SMM) containing insoluble RP as unique phosphate source.
Hamdali, H., Bouizgarne, B., Hafidi, M., Lebrihi, A., M.J., Virolle, Ouhdouch, Y.   +5 more
openaire   +2 more sources

Inoculation with Elite Strains of Phosphate-Solubilizing Bacteria Enhances the Effectiveness of Fertilization with Rock Phosphates

Geomicrobiology Journal, 2020
Eight bacterial strains expressing high-levels of rock phosphate solubilization were isolated from Tunisian agricultural soils. 16S rDNA sequencing assigned these strains to four genera, Pseudomonas, Bacillus, Serratia, and Burkholderia. Both qualitative
Ameni Ben Zineb, D. Trabelsi, Imen Ayachi, F. Barhoumi, R. Aroca, R. Mhamdi   +5 more
semanticscholar   +1 more source

Phosphate rocks and phosphate rock/sulphur granules as fertilisers for hill country pasture

New Zealand Journal of Experimental Agriculture, 1986
Abstract Reactive phosphate rocks (PR) from North Carolina and Peru (Sechura), applied either as granules or after co-granulation with elemental sulphur (PR/S), were evaluated as phosphate fertilisers on a north-facing slope of a hill country pasture. Single superphosphate was used as the standard fertiliser. The fertilisers were applied annually for 3
S.S.S. Rajan, A.G. Gillingham
openaire   +1 more source

Phosphate Rocks and Nuclear Proliferation

Science & Global Security, 2017
Phosphate rocks are predominantly mined for fertilizer production. However, they also contain considerable amounts of accompanying natural uranium that can exceed concentrations found at commercial...
Nils Haneklaus, Anastasiya Bayok, Vitaly Fedchenko   +2 more
openaire   +1 more source

Existing form and distribution of fluorine and phosphorus in phosphate rock acid-insoluble residue

Environmental science and pollution research international, 2021
Rui Li, Weilong He, Jiangfei Duan, Sheng-Xi Feng, Ziyu Zhu, Yu Zhang   +5 more
semanticscholar   +1 more source

A Fed-Batch Strategy Integrated with Mechanical Activation Improves the Solubilization of Phosphate Rock by Aspergillus niger

ACS Sustainable Chemistry and Engineering, 2018
Solubilization of phosphate rock (PR) by microorganisms is an environmentally sustainable alternative to chemical processing for production of phosphate fertilizers.
R. Klaic, F. Plotegher, C. Ribeiro, T. Zangirolami, C. Farinas   +4 more
semanticscholar   +1 more source

Isolation, Selection and Characterization of Root-Associated Rock Phosphate Solubilizing Bacteria in Moroccan Wheat (Triticum aestivum L.)

, 2020
Phosphorus (P) is the most important macronutrient next to nitrogen for the growth and development of plants. But often unavailable for plants because of its high reactivity with many soil constituents.
Abderrazak Rfaki, O. Zennouhi, F. Z. Aliyat, L. Nassiri, J. Ibijbijen   +4 more
semanticscholar   +1 more source

Uranium in phosphate rock

Open-File Report, 1975
Al Introduction 1 Guano and guano-derived deposits 1 Igneous apatite deposits 2 Marine phosphorite 2 Secondary deposits 3 Page Other deposits A4 Lake beds 4 Offshore deposits 4 Phosphate resources 5 Selected references ...
openaire   +1 more source

Rock Phosphates in Agriculture

Experimental Agriculture, 1991
SUMMARYThe 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 not ...
openaire   +1 more source

Leaching effect on phosphate rock

Journal of Radioanalytical and Nuclear Chemistry Letters, 1996
The uranium content in ground phosphate rock was leached out with alkaline solution, however, a poor yield was obtained. XRD, TGA and α-spectrometric analyses in the solid fraction showed that francolite is the main mineral in which uranium is present in different oxidation states (+4 and +6).
E. T. Romero-Guzmán, E. Ordoñez-Regil, V. H. Lara Corona   +2 more
openaire   +1 more source