Journal of Food, Agriculture and Environment

Nutrient levels and incidence of Hypsipyla grandella (Zeller) (Lepidoptera: Pyralidae) attack in young Swietenia macrophylla King (Meliaceae) plants exposed to lime and boron levels

Author(s):

Augusto José Silva Pedroso ^{1 *}, Maria de Lourdes Pinheiro Ruivo ³, Mário Lopes da Silva Júnior ², Orlando Shigueo Ohashi ², Vânia Silva de Melo ², Ellison Rosario de Oliveira ², Márcia Barroso Estumano ², Sannah Mohamad Birani ¹, Gustavo Antônio Ruffeil Alves ¹, Allan Klynger da Silva Lobato¹

Recieved Date: 2015-01-10, Accepted Date: 2015-03-30

Abstract:

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 (|4x4|+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.

Keywords:

Brazilian mahogany, lime, boric acid, Meliaceae shoot borer

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Journal: Journal of Food, Agriculture and Environment
Year: 2015
Volume: 13
Issue: 2
Category: Environment
Pages: 283-290

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