The aim of this study was to evaluate the nutrient content and the control of H. grandella in Swietenia macrophylla seedlings under increasing lime and boron levels. The experimental design was completely randomized in a factorial arrangement (|4×4|+1), with additional treatment (control treatment), four levels of lime (0.5, 1.0, 1.5 and 2.0 t ha-1) and four levels of boron (1, 2, 3, and 4 mg kg-1 substrate) as factors. The characteristics were the contents of macro- (N, P, K, Ca, Mg and S) and micronutrients (B, Cu Fe, Mn and Zn) in the dry matter of the stem and leaves, gallery length and attack percentage of H. grandella. The nutrient content of mahogany seedlings was positively influenced by lime x boron interaction, most advantageous treatment was 1.5 t ha-1 lime x 1.0 mg kg-1 of boron. The two analyzed factors were not significant (p<0.05) in the attack percentage of H. grandella on the mahogany seedlings. The interaction between 1.5 t ha-1 of lime and 4.0 mg kg-1 boron levels was most advantageous in reducing the gallery length in young plants.
Online ISSN: 1459-0263Year: 2015, Vol. 13, Issue 2, pages 283-290.Publisher: WFL.
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