The glauconitic levels of the Salamanca Formation, Chubut: Its agronomic effectiveness as a potassium fertilizer alternative
The Maastrichtian-Early Palaeocene Salamanca Formation and equivalent marine sequences show several glaucony levels, which could be used as a source of potassium and could partially replace current fertilizer requirements met from import. First agronomic assays are shown comparing the efficiency of...
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2010
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v66_n3_p391_Castro http://hdl.handle.net/20.500.12110/paper_00044822_v66_n3_p391_Castro |
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paper:paper_00044822_v66_n3_p391_Castro2023-06-08T14:26:25Z The glauconitic levels of the Salamanca Formation, Chubut: Its agronomic effectiveness as a potassium fertilizer alternative Castro, Liliana Norma Scasso, Roberto Adrian Tourn, Selvia Mabel Glauconitic sandstones Potassium alternative sources Potassium fertilizer Salamanca Formation agronomy bioassay feldspar fertilizer application glauconite irrigation leaching potassium sandstone soil remediation Argentina Chubut The Maastrichtian-Early Palaeocene Salamanca Formation and equivalent marine sequences show several glaucony levels, which could be used as a source of potassium and could partially replace current fertilizer requirements met from import. First agronomic assays are shown comparing the efficiency of greensands (GL) with a traditional potassium fertilizer (KCl). Prospection and sampling took place in the heads of Rio Chico to east of Lago Colhué Huapi, Chubut, where glauconitic levels thickness reach to 20m. This research was separated in phases: phase 1, prospection, sampling, and sedimentological and chemical routine analyses, phase 2a, concentration and ore treatment assays, and phase 2b, agronomic assays. This last phase, was done in culture chamber, with 125 μm and 250 μm fractions (2,85 and 2,82 % K 2 O respectively) and KCl. Varying the dose, seven treatments were completed. In successive harvests (four in total) was observed that GL1 and GL2 (125), did not present a significantly differential behavior with the control. Both treatments of GL 250 μm showed major accumulated biomass, overcoming the control in 44 and 60 % respectively. As conclusion, better results were obtained by 250 μm overcoming even to the KCl fertilization. Probably the major participation of K feldspars in the 125 μm and fast leaching of K in this fraction during successive irrigations of soil would originate the minor observed yield. The great areal extension of the Salamanca Formation and the continuity of the glauconitic levels encourage continuing the evaluation as fertilizer or amendment. Fil:Castro, L.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Scasso, R.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tourn, S.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v66_n3_p391_Castro http://hdl.handle.net/20.500.12110/paper_00044822_v66_n3_p391_Castro |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Glauconitic sandstones Potassium alternative sources Potassium fertilizer Salamanca Formation agronomy bioassay feldspar fertilizer application glauconite irrigation leaching potassium sandstone soil remediation Argentina Chubut |
| spellingShingle |
Glauconitic sandstones Potassium alternative sources Potassium fertilizer Salamanca Formation agronomy bioassay feldspar fertilizer application glauconite irrigation leaching potassium sandstone soil remediation Argentina Chubut Castro, Liliana Norma Scasso, Roberto Adrian Tourn, Selvia Mabel The glauconitic levels of the Salamanca Formation, Chubut: Its agronomic effectiveness as a potassium fertilizer alternative |
| topic_facet |
Glauconitic sandstones Potassium alternative sources Potassium fertilizer Salamanca Formation agronomy bioassay feldspar fertilizer application glauconite irrigation leaching potassium sandstone soil remediation Argentina Chubut |
| description |
The Maastrichtian-Early Palaeocene Salamanca Formation and equivalent marine sequences show several glaucony levels, which could be used as a source of potassium and could partially replace current fertilizer requirements met from import. First agronomic assays are shown comparing the efficiency of greensands (GL) with a traditional potassium fertilizer (KCl). Prospection and sampling took place in the heads of Rio Chico to east of Lago Colhué Huapi, Chubut, where glauconitic levels thickness reach to 20m. This research was separated in phases: phase 1, prospection, sampling, and sedimentological and chemical routine analyses, phase 2a, concentration and ore treatment assays, and phase 2b, agronomic assays. This last phase, was done in culture chamber, with 125 μm and 250 μm fractions (2,85 and 2,82 % K 2 O respectively) and KCl. Varying the dose, seven treatments were completed. In successive harvests (four in total) was observed that GL1 and GL2 (125), did not present a significantly differential behavior with the control. Both treatments of GL 250 μm showed major accumulated biomass, overcoming the control in 44 and 60 % respectively. As conclusion, better results were obtained by 250 μm overcoming even to the KCl fertilization. Probably the major participation of K feldspars in the 125 μm and fast leaching of K in this fraction during successive irrigations of soil would originate the minor observed yield. The great areal extension of the Salamanca Formation and the continuity of the glauconitic levels encourage continuing the evaluation as fertilizer or amendment. |
| author |
Castro, Liliana Norma Scasso, Roberto Adrian Tourn, Selvia Mabel |
| author_facet |
Castro, Liliana Norma Scasso, Roberto Adrian Tourn, Selvia Mabel |
| author_sort |
Castro, Liliana Norma |
| title |
The glauconitic levels of the Salamanca Formation, Chubut: Its agronomic effectiveness as a potassium fertilizer alternative |
| title_short |
The glauconitic levels of the Salamanca Formation, Chubut: Its agronomic effectiveness as a potassium fertilizer alternative |
| title_full |
The glauconitic levels of the Salamanca Formation, Chubut: Its agronomic effectiveness as a potassium fertilizer alternative |
| title_fullStr |
The glauconitic levels of the Salamanca Formation, Chubut: Its agronomic effectiveness as a potassium fertilizer alternative |
| title_full_unstemmed |
The glauconitic levels of the Salamanca Formation, Chubut: Its agronomic effectiveness as a potassium fertilizer alternative |
| title_sort |
glauconitic levels of the salamanca formation, chubut: its agronomic effectiveness as a potassium fertilizer alternative |
| publishDate |
2010 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v66_n3_p391_Castro http://hdl.handle.net/20.500.12110/paper_00044822_v66_n3_p391_Castro |
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