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VOL. 10, ISSUE 4 (2025)
Abundance and population density of the main insect pests infesting eggplant and their associated natural enemies under different planting dates and thermal stress condition
Authors
Walaa A Tawfik, Ola M Roshdy, Hala E Moafy, Marwa M Shalaby
Abstract
Climate has recently led to an impact on
global food security, especially in developing countries in the Middle East
Such as Egypt, due to the effective impact of global warming on both the
production rate of cultivated crops and plant diversity. This study focus on
the effect of eggplant growth under two different seasons a late summer plantation with two different
planting dates and a nili plantation in order to study the relationship between
planting dates as well as some of the climatic factors (temperatures and
relative humidity) and heat stress conditions on the number of insect pests and
their associated natural enemies. The data indicated that there are seven
insect pests were surveyed in eggplant crop at the three different planting
dates. There were significant differences in each of the three planting dates,
in both the type of pests and in seasonal abundance of those pests.
Liromayza trifolii appeared only on eggplant that was planted in a
second period in a late of summer plantation, while, Thrips
tabaci appeared only on a nili plantation dates. The highest general mean
number of Empoasca decipiens was recorded in the first period in a late
summer plantation 65.7 individual while, the highest mean number of Bemisia
tabaci were recorded in a second period of late summer plantation dates
17.8. Tetranychus urticae Koch
and Nesidiocoris tenuis recorded highest mean number in the first
period of a late summer plantation dates 100.8 and 10.3 individual respectively
meanwhile, Pseudococcus longisspinus recorded
highest mean in nili plantation 23.7 individual. The 3rd planting
time in nili plantation was the favorite time and had high quality rather than
the other planting times, this is because it caused highest plant, high number
of leaves and branches and the area of leaves was the highest.
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Pages:120-125
How to cite this article:
Walaa A Tawfik, Ola M Roshdy, Hala E Moafy, Marwa M Shalaby "Abundance and population density of the main insect pests infesting eggplant and their associated natural enemies under different planting dates and thermal stress condition". International Journal of Entomology Research, Vol 10, Issue 4, 2025, Pages 120-125
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