Effect Of Some Pesticides On Microflora and some Important Biological Processes of Soil

The Present work is dealing with the type of effect of the posticides, whether favourable or unfavourable, temporary or permanent. Three groups of pesticides were chosen and one pesticide of each groups was taken for investigation. they are: Insecticide : Di-Syston - Fungicides : Orthocide Herbicide : CIPC. the effect of the above persticides on the microflora and some imporant group of microorganisms the carry out essential processes in the rhizosphere of coton plants such as actinomycetes, total fungi, nitrifiers, nonsymbbiotic nitrogen fixers and also symbiotic nitrogen fixers in leguminus plants has been studied.