Effect of NPK fertilization on production and leaf nutrient content of eucalyptus minicuttings in nutrient solution

Revista Brasileira de Ciência do Solo

José Pereira Carvalho Neto¹  Enilson De Barros Silva²  Reynaldo Campos Santana²  Paulo Henrique Grazziotti² 

[1] ,UFVJMDiamantina MG ,Brazil

关键词: Eucalyptus;    fertilization;    clonal nursery;    Eucalyptus;    fertilização;    minijardim clonal;   

DOI  :  10.1590/S0100-06832011000100023

来源: SciELO

【 摘 要 】

Adequate nutrient levels in plants vary according to the species or clone, age and management practice. Therefore, adjustments of the nutrient solution are often necessary according to the plant material for multiplication. This study aimed to evaluate the influence of NPK fertilization on production and leaf nutrient contents of eucalyptus cuttings in nutrient solution. The study was conducted from November 2008 to January 2009 in a greenhouse. The experimental design was completely randomized fractional factorial (4 x 4 x 4)½, with a total of 32 treatments with three replications. The treatments consisted of four doses of N (50, 100, 200 and 400 mg L-1) as urea, P (7.5, 15, 30 and 60 mg L-1) in the form of phosphoric acid and K (50, 100, 200 and 400 mg L-1) in the form of potassium chloride in the nutrient solution. Only the effect of N alone was significant for the number and dry weight of minicuttings per ministump, with a linear decreasing effect with increasing N levels. The highest number of cuttings was obtained at a dose of 50, 7.5 and 50 mg L-1 of N, P and K, respectively.

【 授权许可】

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