2013
DOI: 10.1590/s0100-67622013000300001
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Crescimento inicial e nutrição de cedro (Cedrela fissilis Vell.) em função de doses de nitrogênio

Abstract: Objetivou-se avaliar os efeitos de doses de nitrogênio no crescimento inicial, índice SPAD, teor e acúmulo de nutrientes em mudas de cedro. O experimento foi realizado em estufa plástica e as mudas, cultivadas em vasos plásticos preenchidos com 20 dm-3 de Latossolo Vermelho, arranjados em blocos casualizados com quatro repetições. Testaram-se as doses de 0, 40, 80, 120 e 160 mg dm-3 de N. A adubação até a dose de 160 mg dm-3 de N promoveu incremento do índice SPAD e do crescimento inicial das plantas, além de … Show more

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Cited by 15 publications
(14 citation statements)
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References 11 publications
(5 reference statements)
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“…With regard to magnesium, the leaf contents observed in these same treatments (with addition of nutrient solution) were within the adequate range for the crop, according to Freiberger et al (2013). Likewise, the highest contents of iron were observed in the leaves of the seedlings in T4, T5 and T6 (Table 3), due to the fact that it activates enzymes and participates in the photosynthetic process, as the leghemoglobin (Taiz & Zeiger, 2013).…”
Section: Resultsmentioning
confidence: 76%
“…With regard to magnesium, the leaf contents observed in these same treatments (with addition of nutrient solution) were within the adequate range for the crop, according to Freiberger et al (2013). Likewise, the highest contents of iron were observed in the leaves of the seedlings in T4, T5 and T6 (Table 3), due to the fact that it activates enzymes and participates in the photosynthetic process, as the leghemoglobin (Taiz & Zeiger, 2013).…”
Section: Resultsmentioning
confidence: 76%
“…Em Cedrela fissilis, a aplicação de N também proporcionou efeito linear positivo sobre o PMST (Freiberger et al, 2013).…”
Section: /9unclassified
“…The stem diameter is an important parameter in the study of seedling potential as to the survival and growth after planting (VIEIRA et al, 2006), this study showed a quadratic response, with a peak of 9.89 mm with the application of 71 kg ha -1 of N. The found regression model was also observed by Cruz et al (2006), though it differed from other studies conducted with the same nutrient (VIEIRA et al, 2006;FREIBERGER et al, 2013). Assessing Jatobá seedlings under suppression of nutrients, Nascimento et al (2014) found that these fell by 21% in stem diameter compared those who received a complete solution, although the biometric variable was less affected by nutritional suppression.…”
Section: Resultsmentioning
confidence: 49%