ECONOMIC INJURY LEVEL OF CITRUS BLACK-FLY IN COMMERCIAL ‘PERA-RIO’ ORANGE AREA

ABSTRACT Citrus black-fly (Aleurocanthus woglumi) has become an important pest in many citrus-producing regions in Brazil, causing direct and indirect damage to plants. Due to the lack of studies on the economic injury level (EIL) for this insect, control efficiency can be impaired. The objective of this research was to determine the EIL and the influence on the productivity of orange trees colonized by A. woglumi nymphs in an orchard located in the municipality of Capitao-Poço, Pará, using statistical analysis and damage prediction models through multivariate statistics. Population levels varied along the experiment. Infestation by A. woglumi nymphs negatively influenced orange production in Capitao-Poço with the highest population densities of the pest associated to lower plant productivity. The level of A. woglumi infestation on orange trees resulting in economic losses was, on average, 47.63% of infested plants, ranging from 22.75 to 89.92% and EIL is expressed by equation Y = 97.39 – 8.43x.

Bibliographic Details

Main Authors:	LIMA,BRUNO GONÇALVES, FARIAS,PAULO ROBERTO SILVA, RAMOS,EDSON MARCOS LEAL SOARES, SALES,TIAGO DE MELO, SILVA,ANDERSON GONÇALVES DA
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira de Fruticultura 2017
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000300401
Tags:	Add Tag No Tags, Be the first to tag this record!