Efficiency of phonolite as a potassium source for Paiaguás palisadegrass
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| Format: | Artículo científico |
| Sprache: | en |
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Universidade Federal de Goiás
2021
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| _version_ | 1876490010732003328 |
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| author | Carlos Augusto Campos da Cruz |
| author_facet | Carlos Augusto Campos da Cruz |
| contents | Efficiency of phonolite as a potassium source for Paiaguás palisadegrass Carlos Augusto Campos da Cruz Valdeci Orioli João Victor Silva Bernardes Mateus Martini Sargentim Gabriel Augusto Silva Ana Clara Dutra Kochenborger Agrociencias ) R ex A Rich Webster potassium silicate Potassium chloride (KCl) is the most widely used potassium source to meet crops requirements. However, Brazil’s dependence on imports to meet the national demand demonstrates the need to assess the efficiency of other sources of this nutrient. The present study aimed to assess the agronomic efficiency of phonolite in natura and its mixture with a water-soluble source (KCl), for Paiaguás palisadegrass. The experiment was conducted in a greenhouse, with a sandy clay loam typic Hapludox. A completely randomized block design was used, in a 3 x 5 factorial scheme, consisting of three K sources (KCl, phonolite and a 30 % of KCl + 70 % of phonolite blend) and five doses of the nutrient (0, 50, 100, 150 and 200 mg kg-1), with four replications. The phonolite doses promoted a linear increase in the dry weight production, albeit inferior to KCl for all the cuttings, whereas the KCl (30 %) and phonolite (70 %) blend showed a better fertilization efficiency than phonolite alone, which exhibited an intermediate effect. The agronomic efficiency was 29 % for the phonolite alone and 63 % for the blend, and the critical K levels in the soil and shoots were, respectively, 1.4 mmolc dm-3 and 8.7 g kg-1. 2021 artículo científico 1517-6398 https://www.redalyc.org/articulo.oa?id=253068585039 https://www.redalyc.org/journal/2530/253068585039/ https://www.redalyc.org/journal/2530/253068585039/html/ https://www.redalyc.org/journal/2530/253068585039/253068585039.epub https://www.redalyc.org/journal/2530/253068585039/movil 10.1590/1983-40632021v5167857 en http://www.redalyc.org/revista.oa?id=2530 Pesquisa Agropecuária Tropical application/pdf Universidade Federal de Goiás Pesquisa Agropecuária Tropical (Brasil) Vol.51 |
| format | Artículo científico |
| id | redalyc_253068585039 |
| institution | Redalyc |
| language | en |
| publishDate | 2021 |
| publisher | Universidade Federal de Goiás |
| spellingShingle | Efficiency of phonolite as a potassium source for Paiaguás palisadegrass Carlos Augusto Campos da Cruz Agrociencias ) R ex A Rich Webster potassium silicate Efficiency of phonolite as a potassium source for Paiaguás palisadegrass Carlos Augusto Campos da Cruz Valdeci Orioli João Victor Silva Bernardes Mateus Martini Sargentim Gabriel Augusto Silva Ana Clara Dutra Kochenborger Agrociencias ) R ex A Rich Webster potassium silicate Potassium chloride (KCl) is the most widely used potassium source to meet crops requirements. However, Brazil’s dependence on imports to meet the national demand demonstrates the need to assess the efficiency of other sources of this nutrient. The present study aimed to assess the agronomic efficiency of phonolite in natura and its mixture with a water-soluble source (KCl), for Paiaguás palisadegrass. The experiment was conducted in a greenhouse, with a sandy clay loam typic Hapludox. A completely randomized block design was used, in a 3 x 5 factorial scheme, consisting of three K sources (KCl, phonolite and a 30 % of KCl + 70 % of phonolite blend) and five doses of the nutrient (0, 50, 100, 150 and 200 mg kg-1), with four replications. The phonolite doses promoted a linear increase in the dry weight production, albeit inferior to KCl for all the cuttings, whereas the KCl (30 %) and phonolite (70 %) blend showed a better fertilization efficiency than phonolite alone, which exhibited an intermediate effect. The agronomic efficiency was 29 % for the phonolite alone and 63 % for the blend, and the critical K levels in the soil and shoots were, respectively, 1.4 mmolc dm-3 and 8.7 g kg-1. 2021 artículo científico 1517-6398 https://www.redalyc.org/articulo.oa?id=253068585039 https://www.redalyc.org/journal/2530/253068585039/ https://www.redalyc.org/journal/2530/253068585039/html/ https://www.redalyc.org/journal/2530/253068585039/253068585039.epub https://www.redalyc.org/journal/2530/253068585039/movil 10.1590/1983-40632021v5167857 en http://www.redalyc.org/revista.oa?id=2530 Pesquisa Agropecuária Tropical application/pdf Universidade Federal de Goiás Pesquisa Agropecuária Tropical (Brasil) Vol.51 |
| title | Efficiency of phonolite as a potassium source for Paiaguás palisadegrass |
| topic | Agrociencias ) R ex A Rich Webster potassium silicate |
| url | https://www.redalyc.org/articulo.oa?id=253068585039 https://www.redalyc.org/journal/2530/253068585039/ https://www.redalyc.org/journal/2530/253068585039/html/ https://www.redalyc.org/journal/2530/253068585039/253068585039.epub https://www.redalyc.org/journal/2530/253068585039/movil |