|
Registro Completo |
|
Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
|
Data corrente: |
09/11/1992 |
|
Data da última atualização: |
09/04/2010 |
|
Autoria: |
ELAMIN, O. M.; WILCOX, G. E. |
|
Título: |
Nitrogen form ratio influence on muskmelon growth, composition, and manganese toxicity. |
|
Ano de publicação: |
1986 |
|
Fonte/Imprenta: |
Journal American Society Horticultural Science, v. 111, n. 3, p. 320-322, 1986. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Muskmelon (Cucumis melo L.) "Harvest Queen" was grown in sand culture to investigate the effects of NH4:NO3 ratios on melon growth and elemental composition. Plants grown at NH4:NO3 ratios of 98:14, 84:28, and 56:56 developed NH4 toxicity symptoms, whereas plants grown with 20 ppm Mn and NH4:NO3 ratios of 0:112, 14:98, 28:84, and 56:56 developed Mn toxicity symptoms. Increasing the proportion of NH4 in nutrient solution up to 1:1 with NO3 decreased Mn concentrations in plant tissues and alleviated Mn toxicity symptoms, whereas at NH4:NO3 ratios of 84:28 and 98:14 uptake of Mn was inhibited and never reached a concentration in the tissue that developed toxicity symptoms. Shoot and root growth was greatest when grown at the 14:98 NH4:NO3 ratio. Increasing NH4 in the solution beyond 14 ppm in the 112-ppm N mixture resulted in increasing limitation of growth. Increasing Mn concentration in the nutrient solution to 20 ppm restricted growth at NH4:NO3 ratios menor ou igual a 1. However, Mn treatment did not influence the growth of plants grown at NH4:NO3 ratios maior que 1 at 84:28 and 98:14. |
|
Palavras-Chave: |
Composição; Nutrição de planta. |
|
Thesagro: |
Crescimento; Fisiologia Vegetal; Melão; Nitrogênio. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01706naa a2200205 a 4500
001 1073767
005 2010-04-09
008 1986 bl --- 0-- u #d
100 1 $aELAMIN, O. M.
245 $aNitrogen form ratio influence on muskmelon growth, composition, and manganese toxicity.
260 $c1986
520 $aMuskmelon (Cucumis melo L.) "Harvest Queen" was grown in sand culture to investigate the effects of NH4:NO3 ratios on melon growth and elemental composition. Plants grown at NH4:NO3 ratios of 98:14, 84:28, and 56:56 developed NH4 toxicity symptoms, whereas plants grown with 20 ppm Mn and NH4:NO3 ratios of 0:112, 14:98, 28:84, and 56:56 developed Mn toxicity symptoms. Increasing the proportion of NH4 in nutrient solution up to 1:1 with NO3 decreased Mn concentrations in plant tissues and alleviated Mn toxicity symptoms, whereas at NH4:NO3 ratios of 84:28 and 98:14 uptake of Mn was inhibited and never reached a concentration in the tissue that developed toxicity symptoms. Shoot and root growth was greatest when grown at the 14:98 NH4:NO3 ratio. Increasing NH4 in the solution beyond 14 ppm in the 112-ppm N mixture resulted in increasing limitation of growth. Increasing Mn concentration in the nutrient solution to 20 ppm restricted growth at NH4:NO3 ratios menor ou igual a 1. However, Mn treatment did not influence the growth of plants grown at NH4:NO3 ratios maior que 1 at 84:28 and 98:14.
650 $aCrescimento
650 $aFisiologia Vegetal
650 $aMelão
650 $aNitrogênio
653 $aComposição
653 $aNutrição de planta
700 1 $aWILCOX, G. E.
773 $tJournal American Society Horticultural Science$gv. 111, n. 3, p. 320-322, 1986.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
|
