Efficiency of phonolite as a potassium source for Paiaguás palisadegrass

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dc.creatorCarlos Augusto Campos da Cruz
dc.creatorValdeci Orioli
dc.creatorJoão Victor Silva Bernardes
dc.creatorMateus Martini Sargentim
dc.creatorGabriel Augusto Silva
dc.creatorAna Clara Dutra Kochenborger
dc.date2021
dc.date.accessioned2026-07-07T04:30:51Z
dc.descriptionPotassium 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.
dc.formatapplication/pdf
dc.identifier1517-6398
dc.identifierhttps://www.redalyc.org/articulo.oa?id=253068585039
dc.identifierhttps://www.redalyc.org/journal/2530/253068585039/
dc.identifierhttps://www.redalyc.org/journal/2530/253068585039/html/
dc.identifierhttps://www.redalyc.org/journal/2530/253068585039/253068585039.epub
dc.identifierhttps://www.redalyc.org/journal/2530/253068585039/movil
dc.identifier10.1590/1983-40632021v5167857
dc.identifier.urihttp://hdl.handle.net/123456789/463671
dc.languageen
dc.publisherUniversidade Federal de Goiás
dc.relationhttp://www.redalyc.org/revista.oa?id=2530
dc.rightsPesquisa Agropecuária Tropical
dc.sourcePesquisa Agropecuária Tropical (Brasil) Vol.51
dc.subjectAgrociencias
dc.titleEfficiency of phonolite as a potassium source for Paiaguás palisadegrass
dc.typeartículo científico

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Pesquisa Agropecuária Tropical - Universidade Federal de Goiás