efeitos de doses crescentes de calcário em solo latossolo amarelo na produção de mudas de pau-de-balsa (ochroma lagopus sw., bombacaceae) effects of the rising heat in yellow oxisoil in the production of silent wood rafts (ochroma lagopus sw., bombacaceae)

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ID: 223400
2010
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Ranked #43 of 44 articles by views in tumour biology : the journal of the international society for oncodevelopmental biology and medicine

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Abstract
A produção de mudas de qualidade com adequado teor nutricional é fundamental para o desenvolvimento da planta e para a formação do sistema radicular, a qual apresentará melhor capacidade de adaptação ao novo local após o plantio. O objetivo deste trabalho foi avaliar o efeito de níveis crescentes de calcário na produção de mudas de pau-de-balsa. Os tratamentos foram constituídos de doses crescentes de corretivo e equivaleram a 0,0; 0,25; 0,5; 0,75; 1,0; 1,5 e 2,0 t ha-1 de calcário e o delineamento experimental utilizado foi o de blocos casualizados com cinco repetições. As características avaliadas foram: altura da planta; diâmetro do colo, matéria seca da parte aérea, matéria seca total, relação raiz/parte aérea, teores totais de macronutrientes nas plantas (N, P, K, Ca, Mg e S). Os resultados demonstraram que a prática de calagem como fator de correção do solo usado no substrato favoreceu todas as características de crescimento avaliadas na produção de mudas de pau-de-balsa. A correção do solo influenciou positivamente a absorção de Ca, Mg e S, por outro lado, não apresentou efeitos estatisticamente significativos para a absorção de N, P e K.
The production of quality rafts with appropriate nutritional tenor is fundamental for plant development and for forming of root systems, which present best ability to adapt to new locations after plantation. The goal of this work was to evaluate the effect of rising heat levels in the production of silent wood rafts. The treatment was constituted by rising doses of correction and was equal to 0.0; 0.25; 0.5; 0.75; 1.0; 1.5, and 2.0 t ha-1 of lime and the experimental detail used was of blocks, repeating five times. The characteristics evaluated were: plant height; diameter, dry material of the aerial part, root relation/aerial part, content of macronutrients in the plants (N, P, K, Ca, Mg and S). The results demonstrate that the practice of liming as a soil correction factor used in the soil substrate improved all the growth characteristics evaluated in seedling production of pau-de-balsa (Ochroma lagopus sw., bombacaceae). The soil correction positively influenced the absorption of Ca, Mg, and S, on the other hand, there weren't any statistically significant effects for absorption of N, P, and K resented.
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Authors Carlos Alberto Franco Tucci, Hedinaldo Narciso Lima, Aildo da Silva Gama, Heron Salazar Costa, Patricia Aparecida de Souza
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Journal tumour biology : the journal of the international society for oncodevelopmental biology and medicine
Year 2010
DOI
10.1590/S0044-59672010000300013
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672010000300013
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