| Registro completo |
| Provedor de dados: |
Rev. Bras. Frutic.
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| País: |
Brazil
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| Título: |
ESTABLISHMENT OF YOUNG “DWARF GREEN” COCONUT PLANTS IN SOIL AFFECTED BY SALTS AND UNDER WATER DEFICIT
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| Autores: |
SILVA,ALEXANDRE REUBER ALMEIDA DA
BEZERRA,FRANCISCO MARCUS LIMA
LACERDA,CLAUDIVAN FEITOSA DE
ARAÚJO,MARIA EMÍLIA BEZERRA DE
LIMA,RONNEY MENDES MAGALHÃES DE
SOUZA,CARLOS HENRIQUE CARVALHO
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| Data: |
2016-01-01
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| Ano: |
2016
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| Palavras-chave: |
Cocos nucifera L.
Initial growth
Multiple stresses
Salinity
Drought
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| Resumo: |
ABSTRACT The aim was to analyze the establishment of young “Green Dwarf” coconut plants in soils affected by salts and under water stress, by evaluating leaf area, biomass production and allocation. In the experiment, conducted in protected environment in Fortaleza, CE, in statistical design of randomized blocks in a split plot arrangement, the effects of different water deficit levels (plots) were evaluated, by imposing different percentages of replacement of water losses by potential crop evapotranspiration - ETpc (20, 40, 60, 80 and 100%), associated with subplots consisting of increasing soil salinity levels (1.72, 6.25, 25.80 and 40.70 dS m-1) provided by soil collected at different parts of the Morada Nova Irrigated Perimeter - PIMN. Leaf area and biomass production were sharply reduced by the conditions of water stress and high soil salinity, apparently being more critical to the crop under water restriction condition. The degree of water stress can increase the susceptibility to salinity and plants can be considered, in general terms, as moderately tolerant to the effects of salinity, when combined with water deficiency. Coconut seedlings show full capacity of establishment in PIMN saline soils, corresponding to the level of electrical conductivity of 6.50 dS m-1, but only when the water supply remains adequate. For higher salinity levels, plants survive, but their size is reduced by around 50%, even when fully irrigated.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000303001
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| Editor: |
Sociedade Brasileira de Fruticultura
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| Relação: |
10.1590/0100-29452016206
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Fruticultura v.38 n.3 2016
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| Direitos: |
info:eu-repo/semantics/openAccess
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