Agronomic effectiveness of partially acidulated rock phosphate and fused calcium-magnesium phosphate compared with superphosphate

1992 ◽  
Vol 32 (2) ◽  
pp. 169-183 ◽  
Author(s):  
M. D. A. Bolland ◽  
R. N. Glencross ◽  
R. J. Gilkes ◽  
Vijay Kumar
Keyword(s):  
Rock Phosphate ◽  
Magnesium Phosphate ◽  
Agronomic Effectiveness ◽  
Calcium Magnesium ◽  
Partially Acidulated Rock Phosphate

scholarly journals In-Vivo Degradation Behavior and Osseointegration of 3D Powder-Printed Calcium Magnesium Phosphate Cement Scaffolds

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 946
Author(s):  
Katharina Kowalewicz ◽  
Elke Vorndran ◽  
Franziska Feichtner ◽  
Anja-Christina Waselau ◽  
Manuel Brueckner ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Bone Substitutes ◽  
Magnesium Phosphate ◽  
Degradation Behavior ◽  
Micro Computed Tomography ◽  
Calcium Magnesium ◽  
Interest In Research ◽  
In Vivo Degradation ◽  
Volume Decrease

Calcium magnesium phosphate cements (CMPCs) are promising bone substitutes and experience great interest in research. Therefore, in-vivo degradation behavior, osseointegration and biocompatibility of three-dimensional (3D) powder-printed CMPC scaffolds were investigated in the present study. The materials Mg225 (Ca0.75Mg2.25(PO4)2) and Mg225d (Mg225 treated with diammonium hydrogen phosphate (DAHP)) were implanted as cylindrical scaffolds (h = 5 mm, Ø = 3.8 mm) in both lateral femoral condyles in rabbits and compared with tricalcium phosphate (TCP). Treatment with DAHP results in the precipitation of struvite, thus reducing pore size and overall porosity and increasing pressure stability. Over 6 weeks, the scaffolds were evaluated clinically, radiologically, with Micro-Computed Tomography (µCT) and histological examinations. All scaffolds showed excellent biocompatibility. X-ray and in-vivo µCT examinations showed a volume decrease and increasing osseointegration over time. Structure loss and volume decrease were most evident in Mg225. Histologically, all scaffolds degraded centripetally and were completely traversed by new bone, in which the remaining scaffold material was embedded. While after 6 weeks, Mg225d and TCP were still visible as a network, only individual particles of Mg225 were present. Based on these results, Mg225 and Mg225d appear to be promising bone substitutes for various loading situations that should be investigated further.

Agronomic effectiveness of rock phosphate combined with nitrogen sources in spot application: A pot experiment

2017 ◽  
Vol 180 (5) ◽  
pp. 585-593 ◽  
Author(s):  
Rafael V. Valadares ◽  
Reinaldo B. Cantarutti ◽  
Edson M. Mattiello ◽  
Rogério F. Vieira
Keyword(s):  
Rock Phosphate ◽  
Nitrogen Sources ◽  
Pot Experiment ◽  
Agronomic Effectiveness

Mitigation of Cd accumulation in rice with water management and calcium-magnesium phosphate fertilizer in field environment

2020 ◽  
Vol 42 (11) ◽  
pp. 3877-3886
Author(s):  
Wenxuan Luo ◽  
Shaona Yang ◽  
Mohammad Aman Khan ◽  
Jiawei Ma ◽  
Weijie Xu ◽  
...  
Keyword(s):  
Water Management ◽  
Phosphate Fertilizer ◽  
Magnesium Phosphate ◽  
Cd Accumulation ◽  
Field Environment ◽  
Calcium Magnesium
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