الفهرس | Only 14 pages are availabe for public view |
Abstract Crons a.~ the main source of food for man who does all his best to produce more cheap and efficient food for him and his domestic animals, so pesticides have come ~o stay (Jonesi.nclJonea 1974). The desirable properties of pesticide should include : 1- Hieh toxi.city to the pests to be controlled. 2- Lo’:: to:::icity to plants. J- Low toxicity to man and warm blooded animals. 4- Selective effect in use so that beneficial and harmless anims.ls are not affected. 5- Leaving behind no undesirable residue. They concluded that pesticides may be grouped |