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VOL. 9, ISSUE 8 (2024)
Efficiency of the foliar application of salicylic acid to reduce the infestation with citrus leaf miner
Authors
Ghada Mohamed Abd Elmonem Morsi, Saneya Rashad Mohammed Farag, Seham Mohamed Elmahdy
Abstract
This work was performed for studying the effectiveness of the foliar
application of salicylic acid along with the bio-insecticide Abamectin (as
standard) on the infestation with citrus leaf miner (CLM), Phyllocnistis
citrella Stainton (Lepidoptera: Gracillariidae) in three species of citrus
trees, summer orange, lemon (adalia) and mandarin (morkite) in Giza
Governorate, Egypt during seasons, 2021and 2022 .Two foliar sprays for each
compound were applied in each season. Salicylic acid was applied by a
concentration 1 kg /20L water, Abamectin was applied by 3ml/20L water and
tensotec was added by 40ml/20L water as emulsifier, the previous concentration
and low concentration, 0.5kg of salicylic acid /20Lwater (half of the used
concentration) was also used in the second spray in each season .The obtained
results clear that, the mean number of mines ,larvae ,pupae and eggs of citrus
leaf miner in orange ,lemon and mandarin trees scored very highly decrement
after treatment with the two tested concentrations of salicylic acid and the
standard compared with pre-treatment and the control . The highest percent
reduction of mines 85.7 %was recorded in mandarin at the highest concentration
of S. acid, followed by 85 .6% with the low concentration compared to 88.6 %
with Abamectin while lemon recorded the highest percent reduction of larvae
91.98% with the low concentration of S. acid compared to 81.7% with Abamectin
.Mandarin scored the highest reduction percentage of pupae 81.08% with the low
concentration of S.acid comparing to 82.2 % for Abamectin while lemon recorded
the highest reduction percentage of eggs78.5% with the same concentration. No
significance was found in the percent reduction for mines and eggs between high
and low concentration of S. acid and the standard among the three citrus
species. Also there were no found significant differences in percent reduction
of pupae obtained in case of lemon and mandarin either with the two
concentrations of S. acid or Abamectin. The spray 2 was more efficient than the
spray1 in reducing the mean number and increasing the percent reduction of the
tested CLM aspects in the three tested citrus species. In case of orange and
lemon, mean number of parasites associated with this pest after treatment with
the two concentrations of S. acid was higher than that obtained after treatment
with Abamectin. In this study salicylic acid may, enhance the citrus trees to
resist the infestation with the citrus leaf miner, may cause death of CLM
larvae or may repelled the adult leaf miner. In the same time S. acid did not
negatively affect on mean number of its parasites and can be incorporated for
controlling of this dangerous pest.
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Pages:26-31
How to cite this article:
Ghada Mohamed Abd Elmonem Morsi, Saneya Rashad Mohammed Farag, Seham Mohamed Elmahdy "Efficiency of the foliar application of salicylic acid to reduce the infestation with citrus leaf miner". International Journal of Entomology Research, Vol 9, Issue 8, 2024, Pages 26-31
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