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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
09/03/2021 |
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Data da última atualização: |
10/03/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SETE, P. B.; CIOTTA, M. N.; NAVA, G.; STEFANELLO, L. de O.; BRACKMANN, A.; BERGHETTI, M. R. P.; CADONÁ, E. A.; BRUNETTO, G. |
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Afiliação: |
PAULA BEATRIZ SETE; MARLISE NARA CIOTTA; GILBERTO NAVA, CPACT; LINCON DE OLIVEIRA STEFANELLO; AURI BRACKMANN; MAGNO ROBERTO PASQUETTI BERGHETTI; ELIANA APARECIDA CADONÁ; GUSTAVO BRUNETTO. |
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Título: |
Potassium fertilization effects on quality, economics, and yield in a pear orchard. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Agronomy Journal, v.112, n. 4, p. 3065-3075, 2020. |
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DOI: |
https://doi.org/10.1002/agj2.20235 |
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Idioma: |
Inglês |
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Conteúdo: |
Potassium (K) nutrient existent in the soil does not always supply pear tree (Pyrus communis L.) demand, which makes the use of potassium-based fertilizer necessary. The objective of this study was to evaluate the impact of potassium fertilization on yield and pears quality in order to establish critical K levels in soil and leaves. The treatments consisted of K application rates of control, 40, 80, 120 and 160 kg K2O ha?1 yr?1 during four crops (2013 to 2017). The fruit quantity, mass and yield were evaluated, and leaves were collected for nutrient analysis. Stratified soil samples were collected, prepared and subjected to exchangeable K extraction by Mehlich-1. In the last two crops, peel color, ethylene production, and respiratory rate were also evaluated after 90 days inside a controlled atmosphere storage chamber. After storage, pears were submitted to a shelf life of 7 days to evaluate the epidermis color, ethylene production, respiratory rate, total titratable acidity (TTA), soluble solids (SS), and pulp firmness. Potassium fertilization increased the exchangeable K contents in the soil, but it was not always correlated with an increase of K concentration in the leaves and fruit. The most economical dose was 45.40 kg K2O ha?1 in the 2016/2017 crop season. It was not possible to estimate K critical levels in the soil and leaves. The fruits submitted to higher doses of K showed the lowest values of ethylene production and respiration rate, which resulted in an increase in storage life in cold rooms and on the shelves. MenosPotassium (K) nutrient existent in the soil does not always supply pear tree (Pyrus communis L.) demand, which makes the use of potassium-based fertilizer necessary. The objective of this study was to evaluate the impact of potassium fertilization on yield and pears quality in order to establish critical K levels in soil and leaves. The treatments consisted of K application rates of control, 40, 80, 120 and 160 kg K2O ha?1 yr?1 during four crops (2013 to 2017). The fruit quantity, mass and yield were evaluated, and leaves were collected for nutrient analysis. Stratified soil samples were collected, prepared and subjected to exchangeable K extraction by Mehlich-1. In the last two crops, peel color, ethylene production, and respiratory rate were also evaluated after 90 days inside a controlled atmosphere storage chamber. After storage, pears were submitted to a shelf life of 7 days to evaluate the epidermis color, ethylene production, respiratory rate, total titratable acidity (TTA), soluble solids (SS), and pulp firmness. Potassium fertilization increased the exchangeable K contents in the soil, but it was not always correlated with an increase of K concentration in the leaves and fruit. The most economical dose was 45.40 kg K2O ha?1 in the 2016/2017 crop season. It was not possible to estimate K critical levels in the soil and leaves. The fruits submitted to higher doses of K showed the lowest values of ethylene production and respiration rate, which resulted in an increase ... Mostrar Tudo |
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Palavras-Chave: |
Crop nutrit ion; Soi l fert i l i ty. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02268naa a2200241 a 4500
001 2130561
005 2021-03-10
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1002/agj2.20235$2DOI
100 1 $aSETE, P. B.
245 $aPotassium fertilization effects on quality, economics, and yield in a pear orchard.$h[electronic resource]
260 $c2020
520 $aPotassium (K) nutrient existent in the soil does not always supply pear tree (Pyrus communis L.) demand, which makes the use of potassium-based fertilizer necessary. The objective of this study was to evaluate the impact of potassium fertilization on yield and pears quality in order to establish critical K levels in soil and leaves. The treatments consisted of K application rates of control, 40, 80, 120 and 160 kg K2O ha?1 yr?1 during four crops (2013 to 2017). The fruit quantity, mass and yield were evaluated, and leaves were collected for nutrient analysis. Stratified soil samples were collected, prepared and subjected to exchangeable K extraction by Mehlich-1. In the last two crops, peel color, ethylene production, and respiratory rate were also evaluated after 90 days inside a controlled atmosphere storage chamber. After storage, pears were submitted to a shelf life of 7 days to evaluate the epidermis color, ethylene production, respiratory rate, total titratable acidity (TTA), soluble solids (SS), and pulp firmness. Potassium fertilization increased the exchangeable K contents in the soil, but it was not always correlated with an increase of K concentration in the leaves and fruit. The most economical dose was 45.40 kg K2O ha?1 in the 2016/2017 crop season. It was not possible to estimate K critical levels in the soil and leaves. The fruits submitted to higher doses of K showed the lowest values of ethylene production and respiration rate, which resulted in an increase in storage life in cold rooms and on the shelves.
653 $aCrop nutrit ion
653 $aSoi l fert i l i ty
700 1 $aCIOTTA, M. N.
700 1 $aNAVA, G.
700 1 $aSTEFANELLO, L. de O.
700 1 $aBRACKMANN, A.
700 1 $aBERGHETTI, M. R. P.
700 1 $aCADONÁ, E. A.
700 1 $aBRUNETTO, G.
773 $tAgronomy Journal$gv.112, n. 4, p. 3065-3075, 2020.
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| 3. |  | FIRMINO, P. de T. Doce de gergelim. Campina Grande: Embrapa Algodão, 2002. 4 p. (Comunicado Técnico, 152)| Tipo: Comunicado Técnico/Recomendações Técnicas | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Algodão. |
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| 5. | | FIRMINO, P. de T.; ARRIEL, N. H. C.; SILVA, A. C. Agroindustrialização. In: ARRIEL, N. H. C.; BELTRAO, N. E. de M.; FIRMINO, P. de T. (Ed.). Gergelim: o produtor pergunta, a Embrapa responde. Brasília, DF: Embrapa Informação Tecnológica: Campina Grande: Embrapa Algodão, 2009. p. 169-192| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Algodão. |
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| 17. | | FIRMINO, P. de T.; ARRIEL, N. H. C.; QUEIROGA, V. de P.; SILVA, A. C. Cookie de gergelim: uma proposta para o aproveitamento da torta na merenda escolar. CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 399| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 18. | | FIRMINO, P. de T.; SILVA, A. C.; FIRMINO, P. R.; PESSOA, P. M. Cultivo do gergelim no Semi-Árido Paraibano gerando ocupação, emprego e renda para os agricultores familiares. In.: SEMINÁRIO LUSO-BRASILEIRO SEMILUSO, 2., 2008, João Pessoa, Agricultura familiar e desertificação: anais. João Pessoa, 2008. 10 p.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Algodão. |
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| 19. | | SILVA, A. C.; FIRMINO, P. de T.; FREIRE, R. M. M.; TEOTÔNIO, M. A. Redução de amido em doce artesanal de gergelim. In: CONGRESSO BRASILEIRO DE GASTRONOMIA, 3.; SIMPÓSIO REGIONAL DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 1, 2010, Brasília, DF. Alimentos: da alquimia à Ciência : anais. Brasília, DF: [s.n], 2010. 4 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| Registros recuperados : 95 | |
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