Data/hora: 11/06/2024 00:55:00

Provedor de dados: | 90
País: | Brazil
Título: | Differential Behavior of Young Eucalyptus Clones in Response to Nitrogen Supply
Autores: | Ferreira,Eric Victor de Oliveira; Novais,Roberto Ferreira; Pereira,Greice Leal; Barros,Nairam Félix de; Silva,Ivo Ribeiro da.
Data: | 2015-06-01
Ano: | 2015
Palavras-chave: | Gas exchange; Growth; Nutrient solution; Nutritional efficiency.
Resumo: | Eucalyptus requires large amounts of nitrogen (N); however, it responds in diverse manners to the application of this nutrient. The aim of this study was to evaluate the differential performance in growth, mineral nutrition, and gas exchanges of N-fertilized Eucalyptus clones. The treatments consisted of two Eucalyptus clones (VM-01 and I-144) and six N application rates (0, 0.74, 2.93, 4.39, 5.85, and 8 mmol L-1 NH4NO3) arranged in a randomized complete block design with five replications. VM-01 had greater plant height and greater height/collar diameter ratio, as well as higher leaf concentrations of all macronutrients and of Cu, Fe, Mo, and Zn. In terms of total and root dry matter production, root/shoot ratio, and collar diameter, as well as stomatal conductance and transpiration, I-144 performed better. The performance of the clones was clearly differentiated, and the growth of I-144, despite lower leaf N concentration, was in general better than VM-01.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000300809
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/01000683rbcs20140560
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.39 n.3 2015
Fonte: | info:eu-repo/semantics/openAccess