Studies on The Effect of Certain Pesticides on Tetranychus Sp

Tetranychidea mites are considered one of the major pests causing considerable damage to field, horticultural and vegetables crops. The Present work aimes to The Toxicity of different acaricides to egg and adult stages. II. The devel0pment of resistance to acaricides under laboratory conditions III. The development of cross-resistance to acaricides in mite strains selected with toxic compounds belonging to different groups. IV. The effect of the synergist pipernyl butoxide on the toxicity of different acaricides to selected and nonselected mite strains. V- Side effect of selection by pesticicides on the biology of mites.