ORIGINAL ARTICLE
Economic injury level of olive psyllid Euphyllura straminea Loginova (Hemiptera: Aphalaridae) in northwestern Iran
1
Plant Protection Department, Agricultural and Natural Resources Research Center of Zanjan Province (AREEO), Iran
2
Plant Protection Department, Agricultural and Natural Resources Research Center of Guilan Province, Rasht, Iran
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
Submission date: 2020-09-20
Acceptance date: 2020-12-23
Online publication date: 2021-06-19
Corresponding author
Aref Marouf
Plant Protection Department, Agricultural and Natural Resources Research Center of Zanjan Provinces (AREEO), 4533147183, Zanjan, Iran
Plant Protection Department, Agricultural and Natural Resources Research Center of Zanjan Provinces (AREEO), 4533147183, Zanjan, Iran
Journal of Plant Protection Research 2021;61(2):127-130
KEYWORDS
TOPICS
ABSTRACT
The olive psyllid Euphyllura straminea Loginova (Hemiptera: Aphalaridae) is one of the
most important pests of olive trees in Iran. To determine this pest’s economic injury level
(EIL) and to evaluate the relationship between density of nymphs (DON) and yield loss,
different densities of olive psyllid nymphs were maintained on olive trees by different insecticide
concentrations. Counting nymphs on olive terminal shoots was done to determine
nymph abundance at the end of nymphal stage. Different densities of olive psyllid
nymphs resulted in significantly different yield losses of olive trees. Regression analysis was
used to determine the relationship between nymph density and yield loss. Considering pest
management costs, the market value of olive, and insecticide efficiency, economic injury
levels were evaluated from 4.08 to 7.14 nymphal days. The olive psyllid EIL values could be
used to plan a pest control program in Zanjan and Guilan provinces.
FUNDING
This research was financially supported by the Agricultural
and Natural Resources Research Center of Zanjan
Province. Also, this work is the result of project No.
0-16-16-047-950253 of Agricultural Research, Education
& Extension Organization (AREEO) of Iran.
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
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