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  <controlfield tag="003">BR-BrBNA</controlfield>
  <controlfield tag="005">20260423115719.0</controlfield>
  <controlfield tag="008">260423b2020    bl.qr|pooa||| 00| 0 eng |</controlfield>
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    <subfield code="b">eng</subfield>
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    <subfield code="a">Silva, Evandro Manoel da </subfield>
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    <subfield code="a">Nobre, Reginaldo Gomes </subfield>
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    <subfield code="a">Gheyi, Hans Raj </subfield>
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    <subfield code="a">Lima, Geovani Soares de </subfield>
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    <subfield code="a">Barbosa, Joicy Lima </subfield>
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    <subfield code="a">Pimenta, Thiago Alves </subfield>
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    <subfield code="a">F&#xE1;tima, Reynaldo Teodoro de </subfield>
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    <subfield code="a">Elias, Jutahy Jorge </subfield>
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  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">Growth and gas exchange of West Indian cherry  irrigated with saline waters under combinations of nitrogen-potassium fertiliza</subfield>
    <subfield code="b">tion</subfield>
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Publica&#xE7;&#xE3;o online; 26 ref.; 5 illus.; Summaries (En, Pt)</subfield>
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ABSTRACT:     Fertilization management has been one of the techniques used to mitigate salt stress in crops. In this context, this research aimed to study the effect of different combinations of nitrogen and potassium fertilization on growth and gas exchange of the West Indian cherry crop irrigated with salinized water at different vegetative stages. The experiment was conducted in field, in a randomized block design, with treatments arranged in a 5 x 4 factorial scheme, referring to five irrigation water salinities (ECw): 0.3, 1.3, 2.3, 3.3 and 4.3 dS m-1 and four combinations of nitrogen and potassium doses: C1 = 70% + 50%; C2 = 100% + 75%; C3 = 130% + 100% and C4 = 160% + 125% of N and K2O, respectively, of the recommended dose for West Indian cherry, with three replicates and one plant per plot, consisting of a 60 L pot. Harmful effects of water salinity manifested at 230 days after transplantation (DAT) on the stem and primary shoot diameter, from ECw of 2.32 dS m-1 on, and the tested fertilizer combinations did not mitigate them. Fertilization with 70% N + 50% K2O favored gas exchange activity and higher plant growth from 170 DAT, regardless of water salinity.  



Key words:      fertilization management; Malpighia emarginata D. C.; salt stress</subfield>
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RESUMO:      O manejo da aduba&#xE7;&#xE3;o tem sido uma das t&#xE9;cnicas utilizadas para mitiga&#xE7;&#xE3;o do estresse salino sobre as culturas. Neste sentido, objetivou-se com a pesquisa, estudar a influ&#xEA;ncia de diferentes combina&#xE7;&#xF5;es de aduba&#xE7;&#xE3;o nitrogenada e pot&#xE1;ssica sobre o crescimento e as trocas gasosas da cultura da aceroleira irrigada com &#xE1;gua salinizadas, em diferentes &#xE9;pocas na fase vegetativa.  O  experimento  foi  desenvolvido  em  campo,  em  delineamento  de  blocos  ao  acaso,  com  os  tratamentos  dispostos  em esquema fatorial 5 x 4, referentes a cinco salinidades da &#xE1;gua de irriga&#xE7;&#xE3;o (CEa): 0,3; 1,3; 2,3; 3,3 e 4,3 dS m-1 e quatro combina&#xE7;&#xF5;es de aduba&#xE7;&#xE3;o nitrogenada-pot&#xE1;ssica:  C1 = 70% + 50%; C2 = 100% + 75%; C3 = 130% + 100% e C4 = 160% + 125% de N e K2O, respectivamente, da dose recomendada para aceroleira, com  tr&#xEA;s repeti&#xE7;&#xF5;es e uma planta por parcela constitu&#xED;da de um recipiente de 60 L. Os efeitos nocivos da salinidade da &#xE1;gua se manifestaram aos 230 dias ap&#xF3;s o transplantio (DAT) sobre os di&#xE2;metros de caule e de ramos prim&#xE1;rios, a partir da CEa de 2,32 dS m-1, sendo que estes efeitos n&#xE3;o foram mitigados pelas combina&#xE7;&#xF5;es de aduba&#xE7;&#xE3;o testadas. A aduba&#xE7;&#xE3;o com 70% de N + 50% de K2O favoreceu a atividade das trocas gasosas e maior crescimento das plantas a partir dos 170 DAT, independentemente da salinidade da &#xE1;gua.  



Palavras-chave:      manejo da aduba&#xE7;&#xE3;o; Malpighia emarginata D. C.; estresse salino</subfield>
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  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">ACEROLA</subfield>
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    <subfield code="a">FRUTA TROPICAL</subfield>
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    <subfield code="a">ADUBA&#xC7;&#xC3;O</subfield>
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    <subfield code="a">NITROG&#xCA;NIO</subfield>
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    <subfield code="a">POT&#xC1;SSIO</subfield>
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    <subfield code="a">IRRIGA&#xC7;&#xC3;O</subfield>
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    <subfield code="a">SALINIDADE</subfield>
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  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">TROCA GASOSA</subfield>
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    <subfield code="0">4656</subfield>
    <subfield code="9">361674</subfield>
    <subfield code="d">Recife-PE Universidade Federal Rural de Pernambuco 2006</subfield>
    <subfield code="o">2026-1686</subfield>
    <subfield code="t">Revista Brasileira de Ci&#xEA;ncias Agr&#xE1;rias (Brazil)</subfield>
    <subfield code="x">1981-1160</subfield>
    <subfield code="g">v. 15(1) p. 1-9; (2020)</subfield>
    <subfield code="w">BR2026000162</subfield>
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    <subfield code="u">http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i1a6333/v15i1a6333</subfield>
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    <subfield code="c">ANA</subfield>
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    <subfield code="c">341525</subfield>
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