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Journal of Applied Sciences
  Year: 2019 | Volume: 19 | Issue: 2 | Page No.: 128-132
DOI: 10.3923/jas.2019.128.132
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Effect of Chitosan and Nano-chitosan on Saissetia oleae (Hemiptera: Coccidae)

Magda Mahmoud Sabbour

Background and Objective: Olive trees important economically attack by many harmful pests. Saissetia oleae (Hemiptera: Coccidae); among these pests, which causing a lot of damage to the trees. The objective of this study is to decrease the amount of insecticide using nano-materials. Materials and Methods: Chitosan (CS)-g-poly (acrylic acid) (PAA) nano-particles, which are well dispersed and stable in aqueous solution have been prepared by template polymerization of acrylic acid in chitosan solution which have an insecticidal effect on insect pests. The usage of chitosan and nano-chitosan test against Saissetia oleae. Results: Results showed that, the LC50 obtained 128 and 37 ppm after Saissetia oleae treated with different concentrations of chitosan and nano-chitosan. Also, under field conditions when S. oleae treated with the chitosan and nano-chitosan, the number of eggs significantly 54±1.1 and 5±7.3 eggs/female as compared to 289±8.9 eggs/female in the control. The percentage of egg hatching, larval mortality, malformed pupae and malformed adults significantly decreased in case of chitosan treatments and almost reduced after nano-chitosan treatments. The weight of olive fruits significantly increased to 2498±66.91 and 2528±51.98 kg/feddan as compared to 1779±55.43 and 1210±41.09 kg/feddan in the control during season 2017 and 2018, respectively. Conclusion: The usage of nano-chitosan decreased the infestation of S. oleae under laboratory and field conditions.
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How to cite this article:

Magda Mahmoud Sabbour , 2019. Effect of Chitosan and Nano-chitosan on Saissetia oleae (Hemiptera: Coccidae). Journal of Applied Sciences, 19: 128-132.

DOI: 10.3923/jas.2019.128.132






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