بسم الله الرحمن الرحيم Umm Al- Qura University Health Sciences College at Al- Leith

1. بسم الله الرحمن الرحيم Umm Al-Qura University Health Sciences College at Al-Leith Department of Public Health Lecture (3)

2. Chemical Control1/ Organic Insecticides2/ Insecticides formulation

3. Objectives 1/ Define Insecticides. 2/ Explain types of Insecticides. 3/ Define Insecticides Formulation. 4/ Give an example of some insecticides that Applied in the Field.

4. 1/ Organic Insecticides Chloronitad and Hydrocarbons Insecticides: They kill arthropods by acting as poisons of the central nervous system. They are slow in action. Example for these group: 1- (DDT) DichloroDiphenyleTrichloroEthane. 2- HCH (BHC) Benzenhexachloride or hexachlorocyclo-hexane. 3- Methoxychlor. 4- Lindane. 5-Chlordane. 6- Dieldrine.

5. 7- Heptachlor. 8- Aldrin. 9- Toxaphene. 10- endosulfan. Organophosphorous Insecticides compound: They kill insect by inhibiting the enzyme cholinesterase and blocking transmission of nerve impulses. Example: 1- Diazinon 2- Malathion 3- Fenthion 4- Methyl parathion 5- Parathion 6- Dichlorvos 7- Temephos (Abate) 8- Fenitrthion

6. Carbamates Insecticides : These insecticides act as nerve poisons and lower the cholinesterase levels. Example for these insecticides: 1- Carbaryl (Sevin) 2- Poropoxur 3- Dimethilan 4- Pyrolan 5- Bendiocarb • PyrethroidsInsecticides : 1- Permethrin 2- Resmethrin 3- Deltamethrin 4- Cyphenothrin 5- Bioresmethrin 6- lambda cyhalothrin

7. 2/ Insecticides formulation insecticides active ingredients have different solubility's. Some dissolve readily in water, others only in oils. Some active ingredients may be relatively insoluble in either water or oils. Types of the insecticides formulation: 1- solids formulation: This including: a) Dusts : D It is placed into the insects habitat and away from contact by people.

8. b) Granules: G granular formulations is similar to that of dusts but it is in larger particle. This formulation used to control Aedes mosquitoes. c) Wettable Powders: WP This formulation is diluted with water and applied as a liquid spray. The mixture forms a suspension in the spray tank.

9. Hudson Xper Used in residual spray

11. d) Soluble Powders: SP Soluble powders are mixed with water in the spray tank, where they dissolve and form a true solution prior to spraying. 2- Liquid Formulations: including: mixed with water and use to the spraying.

12. 3- Aerosols The insecticides can be released under pressure are especially useful for indoor insect control.

13. Questions Q1- use table to classify the following insecticides into four organic groups in table: DDT, permethrin, Parathion, HCH, deltamethrin, carbaryl, Diazinon, Dimetilan, Lindane, Dieldrine, Chlordane, Dichlorvos, Aldrin, cyphenothrin, Fenitrthion, poropoxur, endosulfan, resmethrin, Toxaphene, Temephos, Heptachlor, bendiocarb, Fenthion, Parathion, bioresmethrin, Pyrolan, lambda cyhalothrin.

14. Q2- Write short note on insecticides formulations.

15. Thanks Radia 15