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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
08/06/1993 |
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Data da última atualização: |
08/06/1993 |
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Autoria: |
OKADA, N. |
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Afiliação: |
Shizuoka Prefectural Citrus Experiment Station, Komagoenishi 2-12-10, Shimizu-shi, Shizuoka-ken, Japan. |
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Título: |
On the diagnosis of nutrient condition and the application of fertilizer for citrus trees in Japan. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Tokyo, Japan: International Society of Citriculture, 1983 |
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Volume: |
v.2 |
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Páginas: |
p.548-551 |
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Idioma: |
Inglês |
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Conteúdo: |
Around 1955, boron deficiency symptoms were discovered in a citrus orchard in Shizuoca Prefecture. The boron content in citrus leaves was 20 ppm maximum in the deficient orchard against 30 ppm minimum in the sound orchard. Thus, the necessity of nutritional diagnosis by leaf analysis was recognized. During the period from 1955 to 1970, heavy fertilization was practiced to increase fruit yields. As a result, the citrus orchard soil was increasingly acidified, which hindered normal leaf falling. Mn contents in citrus leaves of such a orchard were up to 150-200 ppm. By a destructive study of citrus trees of different ages, their annual absorptions of nutrients were estimated for each age of trees. Taking the availability of fertilizer nutrients as 50 percent, the fertilizer requirements were 30 kg of N, 5 kg of P2 O5 and 20 kg of K2O per 10 ares of the mature citrus orchard. Of the total nitrogen absorbed, 30 percent was distributed in fallen leaves. The effect of differences in the nitrogen dose was observed more clearly in fallen leaves than in attached leaves. For 'Kawano' Natsudaidai trees, the nitrogen fertilizers in March. There is a positive correlation between the nitrogen content in leaves and the fruit yield of the same year and a negative correlation between the said nitrogen content in leaves and the fruit yield of the fruit yield of the next year. In addition, the content of free amino acids such as argimine, asparagine and glutamine in the leaves increases with increasing... MenosAround 1955, boron deficiency symptoms were discovered in a citrus orchard in Shizuoca Prefecture. The boron content in citrus leaves was 20 ppm maximum in the deficient orchard against 30 ppm minimum in the sound orchard. Thus, the necessity of nutritional diagnosis by leaf analysis was recognized. During the period from 1955 to 1970, heavy fertilization was practiced to increase fruit yields. As a result, the citrus orchard soil was increasingly acidified, which hindered normal leaf falling. Mn contents in citrus leaves of such a orchard were up to 150-200 ppm. By a destructive study of citrus trees of different ages, their annual absorptions of nutrients were estimated for each age of trees. Taking the availability of fertilizer nutrients as 50 percent, the fertilizer requirements were 30 kg of N, 5 kg of P2 O5 and 20 kg of K2O per 10 ares of the mature citrus orchard. Of the total nitrogen absorbed, 30 percent was distributed in fallen leaves. The effect of differences in the nitrogen dose was observed more clearly in fallen leaves than in attached leaves. For 'Kawano' Natsudaidai trees, the nitrogen fertilizers in March. There is a positive correlation between the nitrogen content in leaves and the fruit yield of the same year and a negative correlation between the said nitrogen content in leaves and the fruit yield of the fruit yield of the next year. In addition, the content of free amino acids such as argimine, asparagine and glutamine in the leaves increases with in... Mostrar Tudo |
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Palavras-Chave: |
Boron deficiency; Manganese toxicity; Nitrogen deficiency; Soil acidity. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02069naa a2200193 a 4500
001 1644057
005 1993-06-08
008 1983 bl uuuu u00u1 u #d
100 1 $aOKADA, N.
245 $aOn the diagnosis of nutrient condition and the application of fertilizer for citrus trees in Japan.
260 $c1983
300 $ap.548-551 v.2
490 $vv.2
520 $aAround 1955, boron deficiency symptoms were discovered in a citrus orchard in Shizuoca Prefecture. The boron content in citrus leaves was 20 ppm maximum in the deficient orchard against 30 ppm minimum in the sound orchard. Thus, the necessity of nutritional diagnosis by leaf analysis was recognized. During the period from 1955 to 1970, heavy fertilization was practiced to increase fruit yields. As a result, the citrus orchard soil was increasingly acidified, which hindered normal leaf falling. Mn contents in citrus leaves of such a orchard were up to 150-200 ppm. By a destructive study of citrus trees of different ages, their annual absorptions of nutrients were estimated for each age of trees. Taking the availability of fertilizer nutrients as 50 percent, the fertilizer requirements were 30 kg of N, 5 kg of P2 O5 and 20 kg of K2O per 10 ares of the mature citrus orchard. Of the total nitrogen absorbed, 30 percent was distributed in fallen leaves. The effect of differences in the nitrogen dose was observed more clearly in fallen leaves than in attached leaves. For 'Kawano' Natsudaidai trees, the nitrogen fertilizers in March. There is a positive correlation between the nitrogen content in leaves and the fruit yield of the same year and a negative correlation between the said nitrogen content in leaves and the fruit yield of the fruit yield of the next year. In addition, the content of free amino acids such as argimine, asparagine and glutamine in the leaves increases with increasing...
653 $aBoron deficiency
653 $aManganese toxicity
653 $aNitrogen deficiency
653 $aSoil acidity
773 $tTokyo, Japan: International Society of Citriculture, 1983
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| 1. |  | MARTINS, G. R.; MARINHO, R. C.; BEZERRA-JUNIOR, R. Q.; CÂMARA, L. M. C.; ALBUQUERQUE-PINTO, L. C.; TEIXEIRA, M. F. S. Isolation, culture and characterization of multipotent mesenchymal stem cells from goat umbilical cord blood. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 37, n. 6, p. 643-649, jun. 2017. Título em português: Isolamento, cultura e caracterização de células tronco mesenquimais multipotentes provenientes do sangue do cordão umbilical caprino.| Biblioteca(s): Embrapa Unidades Centrais. |
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