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  <titleInfo>
    <title>Growth and gas exchange of West Indian cherry  irrigated with saline waters under combinations of nitrogen-potassium fertiliza</title>
    <subTitle>tion</subTitle>
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  <name type="personal">
    <namePart>Silva, Evandro Manoel da</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  <name type="personal">
    <namePart>Nobre, Reginaldo Gomes</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  <name type="personal">
    <namePart>Gheyi, Hans Raj</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Lima, Geovani Soares de</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Barbosa, Joicy Lima</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Pimenta, Thiago Alves</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  <name type="personal">
    <namePart>Fátima, Reynaldo Teodoro de</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  <name type="personal">
    <namePart>Elias, Jutahy Jorge</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <typeOfResource>text</typeOfResource>
  <genre authority="marc">periodical</genre>
  <genre authority="marc">abstract or summary</genre>
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    <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
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  <abstract>


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</abstract>
  <abstract>


RESUMO:      O manejo da adubação tem sido uma das técnicas utilizadas para mitigação do estresse salino sobre as culturas. Neste sentido, objetivou-se com a pesquisa, estudar a influência de diferentes combinações de adubação nitrogenada e potássica sobre o crescimento e as trocas gasosas da cultura da aceroleira irrigada com água salinizadas, em diferentes épocas 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 água de irrigação (CEa): 0,3; 1,3; 2,3; 3,3 e 4,3 dS m-1 e quatro combinações de adubação nitrogenada-potássica:  C1 = 70% + 50%; C2 = 100% + 75%; C3 = 130% + 100% e C4 = 160% + 125% de N e K2O, respectivamente, da dose recomendada para aceroleira, com  três repetições e uma planta por parcela constituída de um recipiente de 60 L. Os efeitos nocivos da salinidade da água se manifestaram aos 230 dias após o transplantio (DAT) sobre os diâmetros de caule e de ramos primários, a partir da CEa de 2,32 dS m-1, sendo que estes efeitos não foram mitigados pelas combinações de adubação testadas. A adubação 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 água.  



Palavras-chave:      manejo da adubação; Malpighia emarginata D. C.; estresse salino</abstract>
  <note>

Publicação online; 26 ref.; 5 illus.; Summaries (En, Pt)</note>
  <subject>
    <topic>ACEROLA</topic>
  </subject>
  <subject>
    <topic>FRUTA TROPICAL</topic>
  </subject>
  <subject>
    <topic>ADUBAÇÃO</topic>
  </subject>
  <subject>
    <topic>NITROGÊNIO</topic>
  </subject>
  <subject>
    <topic>POTÁSSIO</topic>
  </subject>
  <subject>
    <topic>IRRIGAÇÃO</topic>
  </subject>
  <subject>
    <topic>SALINIDADE</topic>
  </subject>
  <subject>
    <topic>TROCA GASOSA</topic>
  </subject>
  <relatedItem type="host">
    <titleInfo>
      <title>Revista Brasileira de Ciências Agrárias (Brazil)</title>
    </titleInfo>
    <originInfo>
      <publisher>Recife-PE Universidade Federal Rural de Pernambuco 2006</publisher>
    </originInfo>
    <identifier>2026-1686</identifier>
    <identifier type="issn">1981-1160</identifier>
    <identifier type="local">BR2026000162</identifier>
    <part>
      <text>v. 15(1) p. 1-9; (2020)</text>
    </part>
  </relatedItem>
  <identifier type="uri">http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i1a6333/v15i1a6333</identifier>
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    <url>http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i1a6333/v15i1a6333</url>
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    <recordCreationDate encoding="marc">260423</recordCreationDate>
    <recordChangeDate encoding="iso8601">20260423115719.0</recordChangeDate>
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      <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
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