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August 10, 2026Archives of Phytopathology and Plant Protection

Evaluation of native Saudi plant extracts against Tetranychus urticae on greenhouse cucumber across two regions: toxicity, phytochemistry, and plant defense responses

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Authors

AAAbdulrahman S. Al-HusseinKing Faisal UniversityHKHosny KesbaKing Faisal UniversityWEWael H. ElmenofyKing Faisal University

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Overview

Randomized trial evaluates acaricidal efficacy of plant extracts in cucumber, suggesting potential for integrated pest management.

Key Points

  • The aim is to evaluate the efficacy of native Saudi plant extracts against Tetranychus urticae on greenhouse cucumber and understand their phytochemical properties and plant defense mechanisms.
  • Laboratory bioassays conducted to determine LC50 and LC90 values of plant extracts.
  • Greenhouse trials carried out in Al-Ahsa Oasis and Al-Qassim using selected plant extracts at 1,000 and 2,000 ppm.
  • Efficacy compared against Hexythiazox 10% and untreated control in a randomized complete block design.
  • Citrullus colocynthis showed the lowest LC50 (450.3 ppm) and LC90 (1850.7 ppm) values among tested plants.
  • At 2,000 ppm, C. colocynthis achieved 94.8% efficacy, closely followed by Z. coccineum at 90.6%, which were not statistically different from Hexythiazox at 96.4%.
  • C. colocynthis also exhibited the highest phenolic and flavonoid contents and induced cucumber defense enzymes more effectively than other extracts.

Cite This Study

Al-Hussein et al. (2026) studied this question.

synapsesocial.com/papers/6a797ce09c20a9bbd3183faehttps://doi.org/10.1080/03235408.2026.2711761
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