Skip to content
Research Article Open access CC BY 3.0

The Phytotoxic Effects of Methomyl and Imidacloprid Insecticides on Tomato local Variety in Al-Hassa, Saudi Arabia

M. Jamal Hajjar, Mohamad S. Alsaikhan, Ahmed M. Soliman

Annual Research & Review in Biology · pp. 4181–4189 · Published 1 Aug 2014

10.9734/ARRB/2014/11797

Abstract

Imidacloprid and Methomyl are systemic insecticides used widely for controlling insects infesting crops grown in greenhouses. The experiment was conducted on tomato (Hassawi, Local Varity in Eastern part of Saudi Arabia) to study the phytotoxicity effect of the tested insecticides at various application rates. Imidacloprid was tested at (25, 50, 100, and 150 active ingredient (a.i) g/100L water), and Methomylat (15, 35, 50 and 70g a.i/100L). Both insecticides were shown to have negative effect on the growth of old and new parts (stem, leave and shoot) of tomato variety used for the experiment. The symptoms of leaf chlorosis of the old leaves and distorted growth and marginal necrosis of newer leaves were developed after 3 days of application with the highest rate for both insecticide experiments. When application at the lower rate, the phytotoxicity symptom was developed within the second week of application. The size of the new shoot was affected by high rate of application for both Imidacloprid and Methomyl and that was reflected in the reduction of the weight of dried shoot. In case of old leaf, despite the significant differences between the treatment and the reduction in dry weight in correlation with application rates were small. However, the lowest application rates of both tested insecticides showeda positive stimulation in the new growth that emerged after treatments, even though the lowest rate at (25g a.i/100L) of Imidacloprid caused some phytotoxicity symptoms by the end of the experiment. The results indicated the higher phytotoxicity of Imidacloprid than Methomyland the higher application rate had a significantly higher phytotoxicity effect on tested tomato plant than the lower application rate.

Imidacloprid methomyl phytotoxicity leaf chlorosis necrosis tomato

References (18)

  1. 1 REVISTA CHAPINGO SERIE HORTICULTURA
  2. 2 Managing Insects and Mites With Spray Oils
  3. 3 Phytotoxicity of insecticides used to control aphids on Sitka spruce, Picea sitchensis (Bong.) Carr. [DOI]
  4. 4 Phytotoxic effect of Quizalofop-P-Ethyl on Soybean (Glycine max L.)
  5. 5 Phytotoxicity of the Systemic Insecticide Imidacloprid on Tomato and Cucumber in the Greenhouse [DOI]
  6. 6 Effects of imidacloprid on colonization of aphids and silverleaf whitefly and growth, yield and phytotoxicity in cauliflower
  7. 7 Phytotoxicity of Clove Oil to Vegetable Crop Seedlings and Nematotoxicity to Root-knot Nematodes [DOI]
  8. 8 Phytotoxicity in pearl millet varies among in-furrow insecticides [DOI]
  9. 9 Phytotoxicity of Selected Insecticides on Greenhouse-grown Herbs [DOI]
  10. 10 Phytotoxicity of heptachlor and endosulfan sulfate contaminants in soils to economic crops.
  11. 11 The Influence of Terbufos on the Response of Five Corn (Zea mays) Hybrids to CGA-136872 [DOI]
  12. 12 Conventional and Alternative Placement of Soil Insecticides to Control Sugarbeet Root Maggot (Diptera: Ulidiidae) Larvae [DOI]
  13. 13 EVIDENCE OF A PHYTOTOXIC INTERACTION BETWEEN THE HERBICIDE ERADICANE AND THE INSECTICIDE FONOFOS IN SWEET CORN [DOI]
  14. 14 Phytotoxicity of Insecticides and Acaricides to Anthuriums
  15. 15 THE EFFECT OF INSECTICIDES ON PEROXIDASE ACTIVITY IN HOT PEPPER PLANTS (Capsicum annum L.)
  16. 16 Effect of Insecticide Placement on the Phytotoxicity of Planting Time Insecticides and Their Interaction with Herbicides [DOI]
  17. 17 Evaluations of pesticides for phytotoxicity on chrysanthemum flowers
  18. 18 Evaluations of pesticides for phytotoxicity on chrysanthemum Sowers.

Cited by 9

Detection of Organophosphorus, Pyrethroid, and Carbamate Pesticides in Tomato Peels: A Spectroscopic Study

A. López-Benítez, A. Guevara-Lara, D. Palma-Ramírez · Foods · 2025

Phytotoxic effects of ımidacloprid and its nano-form on the cucumber plants under greenhouse condition and their toxicity on HepG2 cell line

F. Abd-Eldaim, K. Farroh, Fatma Safina · Archives of Phytopathology and Plant Protection · 2023

Effects of essential oil-based formulation on biopesticide activity

Lana Dunan, Tara Malanga, Sylvain Benhamou · Industrial crops and products (Print) · 2023

(Systemic) Insecticides in Plants: Phytotoxicity, Bioactivation, or Hormesis?

R. Guedes, A. Biondi, E. Agathokleous · Agriculture Communications · 2023

Bacillus spp. isolated from soil in Lebanon can simultaneously degrade methomyl in contaminated soils and enhance plant growth

Mohamad Omeiri, R. Khnayzer, H. Yusef · Biocatalysis and Agricultural Biotechnology · 2022

Showing 5 of 9 known citations — external sources report more than can currently be individually listed.

Related research

Article metrics

Real usage data collected on this platform.

42

Page views

0

PDF downloads

11

Outbound clicks

9

Citations

Views over time

Views by country

Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".

Traffic sources

Referring site, by host.

Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.