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  <titleInfo>
    <title>Slow-release fertilizer and hydrogel on the initial growth of camu-camu under different water conditions in a Savannah soil</title>
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  <name type="personal">
    <namePart>Monteiro Neto, João Luiz Lopes</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  <name type="personal">
    <namePart>Araújo, Wellington Farias</namePart>
    <role>
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  <name type="personal">
    <namePart>Chagas, Edvan Alves</namePart>
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  <name type="personal">
    <namePart>Siqueira, Raphael Henrique da Silva</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Chagas, Pollyana Cardoso</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Silva, Edgley Soares da</namePart>
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ABSTRACT:       During  the  process  of  adapting  camu-camu  on  dry  land,  the  fertilization  management  in  local  water  conditions  must be considered with tests of technologies available for cultivation. To that end, the objective was evaluating the effects of the  fertilization  with  slow-release  fertilizer  (SRF)  and  hydrogel  on  the  initial  growth  of  camu-camu  plants  under  different  water  conditions, in two consecutive experiments. In the first one, we evaluated the leaf mortality in two plant sizes (from 15 to 25 cm and from 35 to 45 cm), two hydrogel levels (presence and absence) and different hole fertilizations [A1 - conventional fertilization - FC - (313 g of super simple  + 37 g of urea + 41 g of KCl), A2 (357 g of SRF + 35 g of KCl), A3 (268 g SRF + 26 g of KCl), A4 (179 g SRF + 18 g of KCl) and A5 (89 g of SRF + 9 g of KCl)], under water deficit conditions. In the second experiment, the initial growth of larger plants was evaluated by using the same treatments for two years with water availability. Under water deficit, fertilizers A2 and A3, associated with hydrogel, were very damaging to the leaf growth, especially in plants with height values lesser than 25 cm. With water availability, using FC and A2 associated with hydrogel, and A4 and A5 in the hydrogel absence, favored the plant growth and the supply of chlorophyll ‘b’. Applying SRF in adequate amounts is effective on the initial growth of camu-camu plants in the Savannah soil from Roraima. 



Key words:      fertilization management; Myrciaria dubia; Osmocote®; plant mortality; water management</abstract>
  <abstract>


RESUMO:       No processo de adaptação do camu-camu em terra firme, o manejo da adubação nas condições hídricas locais deve ser considerado com testes de tecnologias disponíveis ao cultivo. Nesse sentido, objetivou-se avaliar os efeitos da adubação com fertilizante de liberação lenta (FLL) e hidrogel sobre o crescimento inicial de camucamuzeiros em diferentes condições hídricas mediante dois experimentos consecutivos. No primeiro, avaliou-se a mortalidade foliar de plantas de dois portes (15 a 25 cm e 35 a 45 cm), dois níveis de hidrogel (presença e ausência) e diferentes adubações em covas [A1 – adubação convencional - AC - (313 g de super simples + 37 g de ureia + 41 g de KCl), A2 (357 g de FLL + 35 g de KCl), A3 (268 g de FLL + 26 g de KCl), A4 (179 g de FLL + 18 g de KCl) e A5 (89 g FLL + 9 g de KCl)], sob déficit hídrico. No segundo, foi avaliado o desenvolvimento inicial das plantas de maior porte pelo uso dos mesmos tratamentos durante dois anos, e com disponibilidade hídrica. Sob déficit hídrico, as adubações A2 e A3 associadas ao hidrogel foram terminantemente danosas ao estabelecimento foliar das plantas, principalmente àquelas com altura inferior a 25 cm. Com disponibilidade hídrica, o uso da AC e da A2 associado a hidrogel, e da A4 e A5 na ausência de hidrogel, favoreceram o crescimento das plantas e o aporte de clorofila ‘b’. A aplicação de FLL em quantidades adequadas é efetiva no crescimento inicial de camucamuzeiro em solo de Savana de Roraima. 



Palavras-chave:      manejo da fertilização; Myrciaria dubia; Osmocote®; mortalidade de plantas; manejo hídrico</abstract>
  <note>

Publicação online; 32 ref.; 4 tables; 3 illus.; Summaries (En, Pt)</note>
  <subject>
    <topic>CAMU-CAMU</topic>
  </subject>
  <subject>
    <topic>CRESCIMENTO</topic>
  </subject>
  <subject>
    <topic>ADUBAÇÃO</topic>
  </subject>
  <subject>
    <topic>FERTILIZANTE</topic>
  </subject>
  <subject>
    <topic>MANEJO</topic>
  </subject>
  <subject>
    <topic>IRRIGAÇÃO</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>2026-1793</identifier>
    <identifier type="issn">1981-1160</identifier>
    <identifier type="local">BR2026000541</identifier>
    <part>
      <text>v. 15(3) p. 1-11; (2020)</text>
    </part>
  </relatedItem>
  <identifier type="uri">http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i3a8139/42</identifier>
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    <url>http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i3a8139/42</url>
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      <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
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