| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Clima Temperado. Para informações adicionais entre em contato com cpact.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Clima Temperado. |
|
Data corrente: |
09/03/2021 |
|
Data da última atualização: |
10/03/2021 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SETE, P. B.; CIOTTA, M. N.; NAVA, G.; STEFANELLO, L. de O.; BRACKMANN, A.; BERGHETTI, M. R. P.; CADONÁ, E. A.; BRUNETTO, G. |
|
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. |
|
Título: |
Potassium fertilization effects on quality, economics, and yield in a pear orchard. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Agronomy Journal, v.112, n. 4, p. 3065-3075, 2020. |
|
DOI: |
https://doi.org/10.1002/agj2.20235 |
|
Idioma: |
Inglês |
|
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 |
|
Palavras-Chave: |
Crop nutrit ion; Soi l fert i l i ty. |
|
Categoria do assunto: |
-- |
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Clima Temperado (CPACT) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
|
Data corrente: |
10/09/2014 |
|
Data da última atualização: |
25/05/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
KAYA, C.; TUNA, A. L.; ALVES, A. A. C. |
|
Afiliação: |
CENGIZ KAYA, Harran University; A. LEVENT TUNA, Mugla University; ALFREDO AUGUSTO CUNHA ALVES, CNPMF. |
|
Título: |
Gibberellic acid improves water deficit tolerance in maize plants. |
|
Ano de publicação: |
2006 |
|
Fonte/Imprenta: |
Acta Physiologiae Plantarum, v. 28, n. 4, p.331-337, 2006. |
|
ISSN: |
0137-5881 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The combination effects of water stress and gibberellic acid (GA3) on physiological at tributes and nutritional status of maize (Zea mays L. cv., DK 647 F1 ) were studied in a pot experiment. Maize plants were grown in the control (well watered WW) and water stress subjected to treated both water stress and two concentrations of gibberellic acid (GA3 25mg?L-1, 50 mg?L-1). WS was imposed by main training the moisture level equivalent to 50 % pot capacity whereas the WW pots were maintained at full pot capacity. Water stress reduced the total dry weight, chlorophyll con centration, and leaf relative water con tent (RWC), but it in creased proline accumulation and electrolyte leak age in maize plants and appears to affect shoots more than roots. Both concentrations of GA3 (25and 50 mg?L-1) largely enhanced the above physiological parameters to levels similar to control. WS reduced leaf Ca2+ and K+ concentrations, but exogenous application of GA3 increased those nutrient levels similar or close to control. Exogenous application of GA3 improved the water stress tolerance in maize plants by maintaining membrane permeability, enhancing chlorophyll con centration, leaf relative water con tent (LRWC) and some macro-nutrient concentrations in leaves. |
|
Thesagro: |
Ácido giberelico; Milho; Regulador de crescimento. |
|
Thesaurus NAL: |
Gibberellic acid; Proline. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01866naa a2200217 a 4500
001 1994734
005 2023-05-25
008 2006 bl uuuu u00u1 u #d
022 $a0137-5881
100 1 $aKAYA, C.
245 $aGibberellic acid improves water deficit tolerance in maize plants.$h[electronic resource]
260 $c2006
520 $aThe combination effects of water stress and gibberellic acid (GA3) on physiological at tributes and nutritional status of maize (Zea mays L. cv., DK 647 F1 ) were studied in a pot experiment. Maize plants were grown in the control (well watered WW) and water stress subjected to treated both water stress and two concentrations of gibberellic acid (GA3 25mg?L-1, 50 mg?L-1). WS was imposed by main training the moisture level equivalent to 50 % pot capacity whereas the WW pots were maintained at full pot capacity. Water stress reduced the total dry weight, chlorophyll con centration, and leaf relative water con tent (RWC), but it in creased proline accumulation and electrolyte leak age in maize plants and appears to affect shoots more than roots. Both concentrations of GA3 (25and 50 mg?L-1) largely enhanced the above physiological parameters to levels similar to control. WS reduced leaf Ca2+ and K+ concentrations, but exogenous application of GA3 increased those nutrient levels similar or close to control. Exogenous application of GA3 improved the water stress tolerance in maize plants by maintaining membrane permeability, enhancing chlorophyll con centration, leaf relative water con tent (LRWC) and some macro-nutrient concentrations in leaves.
650 $aGibberellic acid
650 $aProline
650 $aÁcido giberelico
650 $aMilho
650 $aRegulador de crescimento
700 1 $aTUNA, A. L.
700 1 $aALVES, A. A. C.
773 $tActa Physiologiae Plantarum$gv. 28, n. 4, p.331-337, 2006.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
