Treatment plots were sampled after 13 cropping seasons of P applications as Minjingu phosphate rock (PR) or as triple super phosphate (TSP) (50 kg P ha⁻¹ season⁻¹), as well as a P ...
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ferric-, tricalcium-, and hard Minjingu rock phosphate, (2) Indole Acetic Acid (IAA) production, (3) Siderophore production, (4) Ammonia gas production, (5) Hydrogen cyanide (HCN) gas production, and (6) Activity against phytopathogenic fungi. The second objective was to examine the influence of organic carbon sources and fertilizer-
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Minjingu phosphate rock combined with either manure or Tithonia diversifolia led to a significant increase (over ) in the phosphorous levels. Sole application of Minjingu phosphate rock increased soil iron levels while magnesium, copper, and zinc levels decreased significantly. Other than the control, all treatments …
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The objective of this study was therefore to (i) compare effect of two P sources, Triple superphosphate (TSP) and Minjingu phosphate rock (MPR) when …
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Combining Tithonia diversifolia and minjingu phosphate rock for improvement of P availability and maize grain yields on a chromic acrisol in Morogoro, Tanzania. Nutr. Cycl. Agroecosyst. 76: 249-260. Crossref : Ikerra TWD, Mnkeni PNS, Singh R (1994). Effects of added compost and farmyard manure on phosphorus release from Mijingu phosphate …
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rock phosphate, was able to solubilize 80.39 mg P/kg of Minjingu rock phosphate. The most efficient bacterial isolate was Stenotrophomonas maltophilia which solubilised 27.45 mg P/kg of Panda Hill rock phospahte and 24.75 mg P /kg of Minjingu rock phosphate.
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A good alternative to inorganic P sources is Minjingu phosphate rock (MPR). Research has proved that its use is cost-effective (Qureshi et al., 2014 ).
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Minjingu currently exports the Beneficiated Rock Phosphate to South Africa, Zambia, Kenya, Uganda, and Rwanda. The mine recently added a Granulizer Plant that adds value by converting the Beneficiated Rock Phosphate into a ready to use Fertilizer. The Plant …
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A promising phosphate rock is Minjingu PR (MPR, Tanzania), a sedimentary/biogenic deposit which contains about 13% total P and 3% neutral ammonium citrate (NAC) soluble P. On-farm trials in P-deficient soils in western Kenya demonstrate MPR to be as effective as triple superphosphate (TSP, 20% P) at equal P rates. ...
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A field experiment established in 2007 studied the effects of Minjingu phosphate rock (MPR) and triple superphosphate (TSP) on maize, common beans and …
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Minjingu phosphate rock (MPR) (12.8 % total P (128 g kg −1), 3.0 % neutral ammonium citrate soluble P (30 g kg −1), and 26.9 % Ca (269 g kg −1) from northern Tanzania, and triple superphosphate (TSP) (20 % P) (200 g kg −1) were the sources of P used in this study.MPR was applied as finely ground powder (> 90 % passing through a 100-mesh …
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Minjingu phosphate rock (MPR) is an ideal P fertilizer material for the highly weathered acidic soils (Buresh et al. 1997) which are widespread in western Kenya. MPR requires no further modification, apart from fine grinding. The suitability of Minjingu PR as P source for crops in P-deficient soils has been demonstrated by various authors.
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20 Citations Metrics Abstract Locally occurring Minjinju phosphate rock (MPR) in direct application as P source for maize production was compared with water …
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A study was conducted to assess the effects of limestone, Minjingu Phosphate Rock (MPR) and green manures (GMs) on maize yield, soil properties and nutrient uptake. 13 treatments were tested ...
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The potential effects of P application, with a single direct application of Minjingu phosphate rock (MPR) at 20, 40 and 60 kg P ha1 as MPR were applied, and contributed to a 260 % increase above ...
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The Minjingu phosphate rock deposit is a layered phosphate deposit comprising of remaining organic matter and dead animals sedimented in a paleo-rift valley environment (Schlüter 1997). …
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The phosphate rock (PR) deposit at Minjingu in northern Tanzania consists of two forms, locally called hard Minjingu phosphate rock, MPR (4.8 × 106 Mg with 10.6% P) and soft MPR (3.3 × 106 Mg ...
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Phosphate rock (PR) is an important mineral resource with numerous uses and applications in agriculture and the environment. PR is used in the manufacture of detergents, animal feed, and phosphate (PO 4 3–) fertilizers.Leaching or runoff losses from PR products like PO 4 3– fertilizers, animal feeds, and detergents could cause …
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A promising phosphate rock is Minjingu PR (MPR, Tanzania), a sedimentary/biogenic deposit which contains about 13% total P and 3% neutral ammonium citrate (NAC) soluble P. On-farm trials in P ...
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A 2-year field experiment was conducted to evaluate the effects of Tithonia diversifolia green manure combined with either Minjingu phosphate rock (MPR) or triple super phosphate (TSP) on soil chemical properties that influence P availability, P pools and maize grain yields, on a Chromic Acrisol in Morogoro, Tanzania. Leafy biomass of …
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Abstract. The phosphate rock (PR) deposit at Minjingu in northern Tanzania consists of two forms, locally called hard Minjingu phosphate rock, MPR (4.8 × 10 6 Mg with …
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Minjingu phosphate rock combined with either manure or Tithonia diversifolia led to a significant increase (over ) in the phosphorous levels. Sole application of Minjingu phosphate rock increased soil iron levels while magnesium, copper, and zinc levels decreased significantly. Other than the control, all treatments …
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Following initial screening, 22 fungi and 39 bacteria from Tanzania's Minjingu and Panda Hill phosphate rock deposits were assessed for their ability to solubilise water-insoluble phosphate rocks.
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A promising phosphate rock is Minjingu PR (MPR, Tanzania), a sedimentary/biogenic deposit which contains about 13% total P and 3% neutral ammonium citrate (NAC) soluble P. On-farm trials in P-deficient soils in western Kenya demonstrate MPR to be as
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A laboratory study was conducted to investigate the effect of pyrite rock on the solubility of Minjingu and Panda phosphate rocks. The rocks were grouiuJ to 100 mesh (0.045 min! after which each phosphate rock was mixed with pyrite at P:S ratios of 1 :4, 1 :3, 1 :2, 1:1, 2:1, and 3: 1. The mixtures were moistened and incubated at 250 C.
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Minjingu phosphate rock increased by 18%, while Minjingu phosphate rock alone gave an increase of 12% ( Table 2 ). The low grain yields (ranging between 0.1 to 0.65 Mg ha
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A thorough investigation of the uranium concentration in phosphate mines: a case study of Minjingu phosphate mine, Arusha, United Republic of Tanzania ... and dose rates due to natural radionuclides in rocks from selected mining areas and quarries in Eastern Uganda. 60 rock samples collected from six mines and quarries were analyzed using a NaI ...
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Phosphate rock samples from Minjingu and Panda Hill were taken from the phosphate rock itself while soil samples were collected from soils in direct contact with the phosphate rock deposit as ...
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of phosphate rock (PR); one located at Minjingu area along lake Manyara with a proven 10 million tons deposit of rock phosphates and the other at Panda hill in Mbeya. However, inadequate knowledge and poor plant responses especially during the first year of application have resulted into low adoption of
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A 2-year field experiment was conducted to evaluate the effects of Tithonia diversifolia green manure combined with either Minjingu phosphate rock (MPR) or triple super phosphate (TSP) on soil ...
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Minjingu phosphate rock (Minj-inguPR)hashighPconcentration(25–30 %P 2O 5)and is highlyreactiveinsoilswithpH5.5(Okaleboetal. 2007). According to Kalala and Semoka (2010), in
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Minjingu phosphate rock combined with either manure or Tithonia diversifolia led to a significant increase (over ) in the phosphorous levels. Sole …
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We tested the effects of triple superphosphate (TSP) and Minjingu phosphate rock (MPR), when applied at phosphorus (P) rates of 50 or 250 kg P ha −1 in a factorial combination with urea or ...
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As a Panda Hill were taken from the phosphate rock consequence, direct use of phosphate rocks in itself while soil samples were collected from soils in Tanzania is limited to soils of a lower pH (<5.5) where rock phosphates such as the soft Minjingu direct contact with the phosphate rock deposit as rock become highly reactive (Okalebo et al. 2009).
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The uranium concentration reported for Tanzania can largely be attributed to the common use of Minjingu phosphate rock as a raw material in fertilizer production (Makweba and Holm 1993;Banzi et al ...
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