DISTRIBUIÇÃO DE MOSCA BRANCA EM TOMATEIRO FERTILIZADO COM ADUBAÇÃO MINERAL E ORGÂNICA EM AMBIENTE PROTEGIDO

Abstract

The whitefly is the major pest of tomato due to direct damages caused by sucking and indirect damages related to viruses transmition. Was evaluated the distribution and incidence of whitefly nymphs in tomato by using of mineral and organic fertilization in greenhouse. The experiment was carried out at the Experimental Farm of São Luis, Maranhão State University in a greenhouse during the period november 2010 to december 2011. The experimental design was completely randomized plots with five treatments and six replications T1-Soil + NPK, T2-Soil + NPK + micro-nutrient, T3-Soil + NPK + manure, T4-Solo + manure + NPK + micro-nutrient, T5-Solo + manure + rock phosphate + Biofertilizer. Irrigation was performed manually, based on the weight and field capacity of each pot. The number of nymphs of B. tabaci was evaluated by counting performed at 45, 60 and 75 days after transplanting. In the process of sampling three leaflets were removed by plant been each of plant strata lower, middle and top. The use of organic fertilization showed lower incidence of nymphs of B. tabaci in tomato and distribution of this insect pest is higher in middle and apical strata of the plant.