Open AccessEFEITO DE DOSES DE INSETICIDA E ADJUVANTE NO CONTROLE DE PHYLLOCNISTIS CITRELLASTAINTON (LEPIDOPTERA: GRACILLARIIDAE) EM LIMA ÁCIDA TAHITI
Author(s) -
Marcos Doniseti Michelotto,
Willians César Carrega,
Juliana Altafin Galli,
Maycon Ferraz,
Tamiris Marion de Souza,
Fernando Alves de Azevedo
Publication year - 2018
Publication title -
colloquium agrariae
Language(s) - English
Resource type - Journals
ISSN - 1809-8215
DOI - 10.5747/ca.2018.v14.n3.a229
Subject(s) - gracillariidae , leaf miner , biology , horticulture , lepidoptera genitalia , toxicology , adjuvant , lime , pesticide , botany , agronomy , paleontology , immunology
Citrus leaf miner, Phyllocnistis citrellaStainton,1856 (Lepidoptera,Gracillariidae), is one of the main pests of the culture of acid lime Tahiti and control chemical is the primary method of control. The objective of this study was to testthe effect of insecticide treatments associated with adjuvant, in increasing the efficiency of control of citrus leaf miner in acid lime Tahiti. An experiment was installed in statistical design of randomized blocks with five treatments and four repetitions. The treatments consisted of a control treatment without application of pesticides and the use of the insecticide Ampligo® (clorantraniliprole + lambda-cialotrina) at the recommended dosage, at half the recommended dose and associated with the adjuvant. Three applications were carried out respecting the shortage period of the product. The damages of citrus leaf miner wereassessed in five branches of the central plant.Fruits wereharvest and determining the number and the mass (kg) of fruit per plant.The data were subjected to analysis of variance (F test) and the means were compared by Tukey test (P ≤ 0.05). Also the data were submitted to multivariate analysis using hierarchical cluster analysis techniques and principal component analysis (PCA). All treatments were effective in reducing the attack symptoms of citrus leaf miner, highlighting insecticide in half dosage and application of insecticide in half dosage with the adjuvant.The multivariate analysis was effective in discriminating application treatments of insecticides and adjuvant, and showa direct relationship between the citrus leaf miner and the decrease in fruit production.