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| Registros recuperados : 137 | |
| 14. |  | PRIMAVESI, O.; PRIMAVESI, A. C. P. A.; NOVAES, N. J. Micronutrientes, cobalto e vanadio na producao de materia seca em guandu, em latossolo vermelho-escuro, fase cerrado. In: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 24., 1993, Goiania, GO. Cerrados: fronteira agricola no seculo XXI: resumos. Goiania: Sociedade Brasileira de Ciencia do Solo, 1993. v.2. p. 179.| Biblioteca(s): Embrapa Cerrados. |
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| 19. | | PRIMAVESI, O.; PRIMAVESI, A. C.; NOVAES, N. J. Espécies vegetais para produção de cobertura morta de solo, em plantio no outono, sem irrigação, na região de São Carlos, SP. II - periodo 1994. IN: CONGRESSO BRASILEIRO DE CIÊNÇIA DO SOLO, 25., 1995, Viçosa, MG. Resumos expandidos. Viçosa: UFV, 1995. v.4, p. 2002-2004.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 20. | | PRIMAVESI, O.; PRIMAVESI, A. C.; NOVAES, N. J. Espécies vegetais para produção de cobertura morta de solo, em plantio no outono, sem irrigação, na região de São Carlos, SP. São Carlos, SP: EMBRAPA-CPPSE, 1996. 11 p. (EMBRAPA-CPPSE. Comunicado técnico, 16).| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| Registros recuperados : 137 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
23/12/2014 |
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Data da última atualização: |
23/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SANTIN, D.; BENEDETTI, E. L.; BARROS, N. F. de; ALMEIDA, I. C. de; LEAL, G. P.; FONTES, L.; NEVES, J. C. L.; WENDLING, I.; REISSMANN, C. B. |
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Afiliação: |
Delmar Santin, Pós doutorando UFSC; Eliziane Luiza Benedetti, IFSC; Nairam Félix de Barros, UFV; Igor Carvalho de Almeida, UFV; Greice Pereira Leal, ESALQ/USP; Lucas Fontes, UFV; Júlio César Lima Neves, UFV; IVAR WENDLING, CNPF; Carlos Bruno Reissmann, UFPR. |
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Título: |
Effect of potassium fertilization on yield and nutrition of yerba mate (Ilex paraguariensis). |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 38, p. 1469-1477, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Yerba mate (Ilex paraguariensis) is a tree species native to the subtropical regions of South America, and is found in Brazil predominantly in the southern region. Despite the historical importance in this region, so far, studies on crop nutrition to improve yields are scarce. Thus, this study evaluated the effect of potassium rates on K soil availability, and the yield and nutritional status of yerba mate. The experiment was conducted in São Mateus do Sul, State of Paraná, on a Humox soil, where K2O rates of 0, 20, 40, 80, 160, and 320 kg ha-1 were tested on 7-year-old plantations. The experiment was harvested 24 months after installation by removing approximately 95 % of the canopy that had sprouted from the previous harvest. The soil was evaluated for K availability in the layers 0-10, 0-20, 10-20, and 20-40 cm. The plant parts leaf fresh matter (LM), twigs (TW), thick branches (BR) and commercial yerba mate (COYM), i.e., LM+TW, were analyzed. In addition, the relationship between fresh matter/dry matter (FM/DM) and K concentration in LM, AG and BR were evaluated. The fertilization increased K availability in all evaluated soil layers, indicating good mobility of the nutrient even at low rates. Yerba mate responded positively to increasing K2O rates with higher yields of all harvested components. The crop proved K-demanding, with a maximum COYM yield of 28.5 t ha-1, when 72 mg dm-3 K was available in the 0-20 cm layer. Yerba mate in the plant production stage requires soil K availability at medium to high level; in clayey soil with low K availability, a rate of 300 kg ha-1 K2O should be applied at 24 month intervals to obtain high yields. A leaf K concentration of 16.0 g ha-1 is suitable for yerba mate in the growth stage. MenosYerba mate (Ilex paraguariensis) is a tree species native to the subtropical regions of South America, and is found in Brazil predominantly in the southern region. Despite the historical importance in this region, so far, studies on crop nutrition to improve yields are scarce. Thus, this study evaluated the effect of potassium rates on K soil availability, and the yield and nutritional status of yerba mate. The experiment was conducted in São Mateus do Sul, State of Paraná, on a Humox soil, where K2O rates of 0, 20, 40, 80, 160, and 320 kg ha-1 were tested on 7-year-old plantations. The experiment was harvested 24 months after installation by removing approximately 95 % of the canopy that had sprouted from the previous harvest. The soil was evaluated for K availability in the layers 0-10, 0-20, 10-20, and 20-40 cm. The plant parts leaf fresh matter (LM), twigs (TW), thick branches (BR) and commercial yerba mate (COYM), i.e., LM+TW, were analyzed. In addition, the relationship between fresh matter/dry matter (FM/DM) and K concentration in LM, AG and BR were evaluated. The fertilization increased K availability in all evaluated soil layers, indicating good mobility of the nutrient even at low rates. Yerba mate responded positively to increasing K2O rates with higher yields of all harvested components. The crop proved K-demanding, with a maximum COYM yield of 28.5 t ha-1, when 72 mg dm-3 K was available in the 0-20 cm layer. Yerba mate in the plant production stage requires soi... Mostrar Tudo |
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Palavras-Chave: |
Erva-mate; Espécie arbórea. |
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Thesagro: |
Espécie Nativa; Fertilidade do Solo; Ilex Paraguariensis; Potássio. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114355/1/2014-API-Wendling-EffectPotassium.pdf
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Marc: |
LEADER 02599naa a2200289 a 4500
001 2003635
005 2014-12-23
008 2014 bl uuuu u00u1 u #d
100 1 $aSANTIN, D.
245 $aEffect of potassium fertilization on yield and nutrition of yerba mate (Ilex paraguariensis).$h[electronic resource]
260 $c2014
520 $aYerba mate (Ilex paraguariensis) is a tree species native to the subtropical regions of South America, and is found in Brazil predominantly in the southern region. Despite the historical importance in this region, so far, studies on crop nutrition to improve yields are scarce. Thus, this study evaluated the effect of potassium rates on K soil availability, and the yield and nutritional status of yerba mate. The experiment was conducted in São Mateus do Sul, State of Paraná, on a Humox soil, where K2O rates of 0, 20, 40, 80, 160, and 320 kg ha-1 were tested on 7-year-old plantations. The experiment was harvested 24 months after installation by removing approximately 95 % of the canopy that had sprouted from the previous harvest. The soil was evaluated for K availability in the layers 0-10, 0-20, 10-20, and 20-40 cm. The plant parts leaf fresh matter (LM), twigs (TW), thick branches (BR) and commercial yerba mate (COYM), i.e., LM+TW, were analyzed. In addition, the relationship between fresh matter/dry matter (FM/DM) and K concentration in LM, AG and BR were evaluated. The fertilization increased K availability in all evaluated soil layers, indicating good mobility of the nutrient even at low rates. Yerba mate responded positively to increasing K2O rates with higher yields of all harvested components. The crop proved K-demanding, with a maximum COYM yield of 28.5 t ha-1, when 72 mg dm-3 K was available in the 0-20 cm layer. Yerba mate in the plant production stage requires soil K availability at medium to high level; in clayey soil with low K availability, a rate of 300 kg ha-1 K2O should be applied at 24 month intervals to obtain high yields. A leaf K concentration of 16.0 g ha-1 is suitable for yerba mate in the growth stage.
650 $aEspécie Nativa
650 $aFertilidade do Solo
650 $aIlex Paraguariensis
650 $aPotássio
653 $aErva-mate
653 $aEspécie arbórea
700 1 $aBENEDETTI, E. L.
700 1 $aBARROS, N. F. de
700 1 $aALMEIDA, I. C. de
700 1 $aLEAL, G. P.
700 1 $aFONTES, L.
700 1 $aNEVES, J. C. L.
700 1 $aWENDLING, I.
700 1 $aREISSMANN, C. B.
773 $tRevista Brasileira de Ciência do Solo$gv. 38, p. 1469-1477, 2014.
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Embrapa Florestas (CNPF) |
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