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| Silva, Maria Anita Gonçalves da; Muniz, Antonio Saraiva; Costa, Antonio Carlos Saraiva da; Cegana, Antonio Cristiano Vieira. |
| The methodologies of micronutrientes analyses have been studied seeking a better expression of its texts in the soils and a larger adaptation to the analyses of routine of the laboratories. The efficiency of the extractors in the determination of the iron was evaluated through the use of acid extractors (Mehlich 1), in the relationship of 1:5 and 1:10, of an agent complexante (DTPA pH 7,3) and of combinated (Mehlich 3), in the relationship 1:10; the determination methodology consisted of agitation with immediate filtrate, filtrate after 16 hours of decantated and pipetate after decantação of 16 hours. The analyses included 18 representative soils of Paraná, collected to a depth of 0-20cm. The results they were appraised through the relationship among the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.00.00.00-4 Ciências Agrárias extratores de ferro; Metodologias de análise; Solos paranaenses 5.00.00.00-4 Ciências Agrárias. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1833 |
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| Quiqui, Erci Marcos Del; Martins, Sueli Sato; Pintro, José Carlos; Andrade, Paulo José Parazzi de; Muniz, Antonio Saraiva. |
| The objective of this work was to evaluate the effects of different fertilizers on the growth and mineral composition of eucalyptus seedlings. Three species of eucalyptus (E. saligna, E. grandis and E. citriodora), nine fertilizers (differing in composition and solubility - rate of nutrient liberation: high and low liberation), and 4 replications were used in this study. The eucalyptus seedlings were cultivated into plastic tubes (50cm3) with commercial substratum, under controlled conditions of illumination and irrigation, during a period of 6 months. Results showed that the use of slow release fertilizers resulted in a larger accumulation of nutrients in the shoot part of the eucalyptus seedlings, except for phosphorus and potassium, that the high... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.00.00.00-4 Ciências Agrárias nutrição mineral; Mudas de eucalipto; Fertilizantes 5.00.00.00-4 Ciências Agrárias. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1826 |
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