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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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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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Registro original: |
Embrapa Florestas (CNPF) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
30/08/2022 |
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Data da última atualização: |
30/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CUNHA, I. M.; LESSA, D. A. B.; CARVALHO, V. A. N.; ALENCAR, N. X.; TEIXEIRA, A. L. S.; CHENARD, M. G.; SOUZA, G. N. de; HELAYEL, M. J. S. A. |
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Afiliação: |
ISABELLE M. CUNHA, Universidade Federal Fluminense; DANIEL A. B. LESSA, Universidade Federal Fluminense; VIVIAN A. N. CARVALHO, Universidade Federal Rural do Rio de Janeiro; NAYRO X. ALENCAR, Universidade Federal Fluminense; ANDRÉ L. S. TEIXEIRA, Universidade Federal Fluminense; MARINA G. CHENARD, Universidade Federal Fluminense; GUILHERME NUNES DE SOUZA, CNPGL; MICHEL J. S. A. HELAYEL, Universidade Federal Fluminense. |
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Título: |
Electrocardiographic, echocardiographic and heart biomarker parameters in sheep experimentally poisoned by Palicourea marcgravii (Rubiaceae). |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, v. 42, e07097, 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT - The present study aimed to identify and describe cardiac alterations in sheep experimentally poisoned with Palicourea marcgravii through analysis of serum cardiac biomarkers (serum troponin I and creatine kinase - CK-MB) and electro and echocardiographic assessments to contribute to a better understanding of the poisoning pathophysiology. P. marcgravii is the main plant within a group of 22 species that cause sudden death in Brazil; its toxic principle is sodium monofluoroacetate. Eight healthy crossbreed male sheep, aged between five and twelve months, weighing 14 to 27kg, were evaluated. The animals received 1g kg-1 of P. marcgravii plants orally. The sheep were evaluated before administering the plant (T0) through electro and echocardiography and blood collection to assess cardiac biomarkers (CK-MB and cTnI). Collections and analyses were repeated every four hours until the animal?s death. During the study, there was the presence of extravasation of serum troponin I carried out in a qualitative test, with positive values at time T4, and the serum CK-MB biomarker had a peak at T4 and slightly decreased at T8. The electro and echocardiographic examinations showed that the cause of death in these animals was due to acute heart failure characterized by arrhythmias, tachycardia/ventricular fibrillation, drop in cardiac output, left ventricular (LV) systolic dysfunction by the progressive decrease in the LV ejection fraction (EF), decrease in LV fractional shortening (FS), and decrease in aortic flow velocity and aortic flow gradient. This study seems to be the first to evaluate cardiac alterations in sheep poisoned by P. marcgravii through cardiac biomarkers and electro and echocardiographic exams. RESUMO - O presente estudo objetivou identificar e descrever as alterações cardíacas de ovinos intoxicados experimentalmente por Palicourea marcgravii através das análises de biomarcadores cardíacos séricos (troponina I sérica e a creatinoquinase - MB) e das avaliações eletro e ecocardiográficas contribuindo para o melhor entendimento da fisiopatologia da intoxicação. Palicourea marcgravii é a principal planta dentro de um grupo de 22 espécies que causam ?morte súbita? no Brasil e seu princípio tóxico é o monofluoracetato de sódio. Foram utilizados oito ovinos saudáveis machos, sem raça definida, com idades entre cinco e doze meses e peso de 14 a 27kg. Os animais receberam 1g/kg de Palicourea marcgravii por via oral. Os ovinos foram avaliados momentos antes da administração da planta (T0) através de eletro e ecocardiograma e coleta de sangue para avaliação dos biomarcadores cardíacos (CK-MB e cTnI). As análises e coletas foram repetidas a cada quatro horas até o óbito do animal. Durante o estudo observou-se extravasamento de troponina I sérica realizada em teste qualitativo, com valores positivos já em T4, assim como o biomarcador CK-MB sérico teve seu pico de aumento em T4 e em T8 houve uma leve redução. Aos exames eletro e ecocardiográfico foi possível determinar que a causa do óbito nestes animais ocorreu devido à insuficiência cardíaca aguda caracterizada por arritmias, taquicardia/fibrilação ventricular, queda no débito cardíaco, disfunção sistólica do ventrículo esquerdo (VE) pela diminuição progressiva da fração de ejeção (EF) do VE, diminuição na fração de encurtamento (FS) do VE, diminuição da velocidade do fluxo aórtico e do gradiente do fluxo aórtico. Este é o primeiro estudo que avalia as alterações cardiológicas de ovinos intoxicados por P. marcgravii através de biomarcadores cardíacos e exames eletro e ecocardiográficos. MenosABSTRACT - The present study aimed to identify and describe cardiac alterations in sheep experimentally poisoned with Palicourea marcgravii through analysis of serum cardiac biomarkers (serum troponin I and creatine kinase - CK-MB) and electro and echocardiographic assessments to contribute to a better understanding of the poisoning pathophysiology. P. marcgravii is the main plant within a group of 22 species that cause sudden death in Brazil; its toxic principle is sodium monofluoroacetate. Eight healthy crossbreed male sheep, aged between five and twelve months, weighing 14 to 27kg, were evaluated. The animals received 1g kg-1 of P. marcgravii plants orally. The sheep were evaluated before administering the plant (T0) through electro and echocardiography and blood collection to assess cardiac biomarkers (CK-MB and cTnI). Collections and analyses were repeated every four hours until the animal?s death. During the study, there was the presence of extravasation of serum troponin I carried out in a qualitative test, with positive values at time T4, and the serum CK-MB biomarker had a peak at T4 and slightly decreased at T8. The electro and echocardiographic examinations showed that the cause of death in these animals was due to acute heart failure characterized by arrhythmias, tachycardia/ventricular fibrillation, drop in cardiac output, left ventricular (LV) systolic dysfunction by the progressive decrease in the LV ejection fraction (EF), decrease in LV fractional shortening... Mostrar Tudo |
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Palavras-Chave: |
Cardiologia; Ecocardiograma. |
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Thesagro: |
Eletrocardiograma; Intoxicação Animal; Ovino. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1145874/1/Electrocardiographic-echocardiographic-and-heart.pdf
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Marc: |
LEADER 04500naa a2200265 a 4500
001 2145874
005 2022-08-30
008 2022 bl uuuu u00u1 u #d
100 1 $aCUNHA, I. M.
245 $aElectrocardiographic, echocardiographic and heart biomarker parameters in sheep experimentally poisoned by Palicourea marcgravii (Rubiaceae).$h[electronic resource]
260 $c2022
520 $aABSTRACT - The present study aimed to identify and describe cardiac alterations in sheep experimentally poisoned with Palicourea marcgravii through analysis of serum cardiac biomarkers (serum troponin I and creatine kinase - CK-MB) and electro and echocardiographic assessments to contribute to a better understanding of the poisoning pathophysiology. P. marcgravii is the main plant within a group of 22 species that cause sudden death in Brazil; its toxic principle is sodium monofluoroacetate. Eight healthy crossbreed male sheep, aged between five and twelve months, weighing 14 to 27kg, were evaluated. The animals received 1g kg-1 of P. marcgravii plants orally. The sheep were evaluated before administering the plant (T0) through electro and echocardiography and blood collection to assess cardiac biomarkers (CK-MB and cTnI). Collections and analyses were repeated every four hours until the animal?s death. During the study, there was the presence of extravasation of serum troponin I carried out in a qualitative test, with positive values at time T4, and the serum CK-MB biomarker had a peak at T4 and slightly decreased at T8. The electro and echocardiographic examinations showed that the cause of death in these animals was due to acute heart failure characterized by arrhythmias, tachycardia/ventricular fibrillation, drop in cardiac output, left ventricular (LV) systolic dysfunction by the progressive decrease in the LV ejection fraction (EF), decrease in LV fractional shortening (FS), and decrease in aortic flow velocity and aortic flow gradient. This study seems to be the first to evaluate cardiac alterations in sheep poisoned by P. marcgravii through cardiac biomarkers and electro and echocardiographic exams. RESUMO - O presente estudo objetivou identificar e descrever as alterações cardíacas de ovinos intoxicados experimentalmente por Palicourea marcgravii através das análises de biomarcadores cardíacos séricos (troponina I sérica e a creatinoquinase - MB) e das avaliações eletro e ecocardiográficas contribuindo para o melhor entendimento da fisiopatologia da intoxicação. Palicourea marcgravii é a principal planta dentro de um grupo de 22 espécies que causam ?morte súbita? no Brasil e seu princípio tóxico é o monofluoracetato de sódio. Foram utilizados oito ovinos saudáveis machos, sem raça definida, com idades entre cinco e doze meses e peso de 14 a 27kg. Os animais receberam 1g/kg de Palicourea marcgravii por via oral. Os ovinos foram avaliados momentos antes da administração da planta (T0) através de eletro e ecocardiograma e coleta de sangue para avaliação dos biomarcadores cardíacos (CK-MB e cTnI). As análises e coletas foram repetidas a cada quatro horas até o óbito do animal. Durante o estudo observou-se extravasamento de troponina I sérica realizada em teste qualitativo, com valores positivos já em T4, assim como o biomarcador CK-MB sérico teve seu pico de aumento em T4 e em T8 houve uma leve redução. Aos exames eletro e ecocardiográfico foi possível determinar que a causa do óbito nestes animais ocorreu devido à insuficiência cardíaca aguda caracterizada por arritmias, taquicardia/fibrilação ventricular, queda no débito cardíaco, disfunção sistólica do ventrículo esquerdo (VE) pela diminuição progressiva da fração de ejeção (EF) do VE, diminuição na fração de encurtamento (FS) do VE, diminuição da velocidade do fluxo aórtico e do gradiente do fluxo aórtico. Este é o primeiro estudo que avalia as alterações cardiológicas de ovinos intoxicados por P. marcgravii através de biomarcadores cardíacos e exames eletro e ecocardiográficos.
650 $aEletrocardiograma
650 $aIntoxicação Animal
650 $aOvino
653 $aCardiologia
653 $aEcocardiograma
700 1 $aLESSA, D. A. B.
700 1 $aCARVALHO, V. A. N.
700 1 $aALENCAR, N. X.
700 1 $aTEIXEIRA, A. L. S.
700 1 $aCHENARD, M. G.
700 1 $aSOUZA, G. N. de
700 1 $aHELAYEL, M. J. S. A.
773 $tPesquisa Veterinária Brasileira$gv. 42, e07097, 2022.
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