Le sol, réservoir de principes nutritifs pour la plante

Baeyens, J.

doi:10.1007/978-3-7091-8197-3_5

“…With the maximum fertilizing intensity which has been reported to be 1525 kg P205 per ha in 1973/74 in the region of Wiirzburg [12] one arrives at 87.8, 60.5, 2.9, and 891 ~Ci/ha for Unat, 2Z6Ra, Thnat or 4°K, respectively. It must be considered, however, that radium may be bound to the soil matrix to a relatively high extent over many years, as it is known for the other alkaline earth ions [2]. This would result in an accumulation of radium from phosphate fertilizers in the soil due to the annual fertilizing.…”

Section: Contribution Of Radionuelides Contained In Phosphate Fertilimentioning

confidence: 99%

Population dose from natural radionuclides in phosphate fertilizers

Pfister

¹

,

Philipp

²

,

Pauly

³

1976

Radiat Environ Biophys

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The natural radionuclide content of mineral phosphate fertilizers has been determined gammaspectrometrically. The investigations comprised ca. 70% of the mineral phosphate fertilizers authorized and used in the Federal Republic of Germany (FRG). At maximum, we found specific activities of 62 nCi Unat/kg, 23 nCi 226Ra/kg, 1.6 nCi Thnat/kg and 262 nCi 40K/kg. The mean values, weighted by the percentual agricultural consumption of the main phosphate fertilizer groups in 1973/74 and related to the phosphate content, amounted to 58, 40, 2, and 584 nCi/kg P2O5 for Unat, 226Ra, Thnat, and 40K respectively. This resulted in an annual distribution due to phosphate fertilizing of about 3.9 muCi Unat, 2.7 muCi 226Ra, 0.1 muCi Thnat, and 39.9 muCi 40K per ha of arable or pasture land in 1973/74 on the average. From these values the air dose rates over agricultural areas have been estimated under extreme conservative assumptions resulting in an additional external exposure of members of the population of 0.02 mrd/a on the average and 0.4 mrd/a in the region of highest phosphate fertilizing intensity. If it is assumed that radium contained in phosphate fertilizers were completely accumulated in the soils during the last 80 years, this value would be raised to 0.3 mrd/a on the average. The occupational external radiation exposure due to natural radionuclides contained in phosphate fertilizers was estimated to be 0.1 mrd/a on the average and 2.3 mrd/a at maximum for persons working in agriculture. These estimates show that natural radionuclides in phosphate fertilizers contribute but very little to the mean terrestrial radiation exposure of the population which is 50 to 55 mrd/a in Germany. Only for the small group of persons working in fertilizer production plants or storehouses a significant increase of the external radiation exposure has to be expected which could reach a doubling of the mean natural exposure value.

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“…Another research complex is geochemical research on the relationship of chemical fertilizers -improving the performance of soil with particular regard to the toxicity of additives, in particular those containing radioactive elements [19][20][21][22][23][24]. A lot of publications address the problem of the relation of fauna, and soil flora and its mineral composition [25][26][27][28] as well as the influence of mineral factors on the development of individual plant elements [4,5,29]. There are also publications on the use of organic waste for fertilization glkeb [30][31][32][33], the role of soil sun exposure in stabilizing its beneficial properties [34,35] and the use of the so-called.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2019

OAJESS

0

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Improving soil quality results in increased yields and benefits for farmers. Research has been carried out on the use of selected mineral waste collected in heaps to improve the quality of poor soils. The natural soil supplements obtained in this way will not only improve their quality and increase polonies but will also allow the liquidation of some of the heaps. This will contribute to the reclamation of the landscape and the environment. Material and Methods of ResearchFigure 1: Wall of the excavation No. 2 of Józefek dolomite quarry. There are described rocks in the overburden.

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“…Another research complex is geochemical research on the relationship of chemical fertilizers -improving the performance of soil with particular regard to the toxicity of additives, in particular those containing radioactive elements [19][20][21][22][23][24]. A lot of publications address the problem of the relation of fauna, and soil flora and its mineral composition [25][26][27][28] as well as the influence of mineral factors on the development of individual plant elements [4,5,29]. There are also publications on the use of organic waste for fertilization glkeb [30][31][32][33], the role of soil sun exposure in stabilizing its beneficial properties [34,35] and the use of the so-called.…”

Section: Introductionmentioning

confidence: 99%

Mineral Supplements of Soils

Pawlikowski

2019

OAJESS

1

0

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Improving soil quality results in increased yields and benefits for farmers. Research has been carried out on the use of selected mineral waste collected in heaps to improve the quality of poor soils. The natural soil supplements obtained in this way will not only improve their quality and increase polonies but will also allow the liquidation of some of the heaps. This will contribute to the reclamation of the landscape and the environment. Material and Methods of ResearchFigure 1: Wall of the excavation No. 2 of Józefek dolomite quarry. There are described rocks in the overburden.

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Le sol, réservoir de principes nutritifs pour la plante

Cited by 3 publications

References 161 publications

Population dose from natural radionuclides in phosphate fertilizers

Population dose from natural radionuclides in phosphate fertilizers

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Mineral Supplements of Soils

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