The effect of nitrogenous fertilizers
ammonium nitrate and urea on the population,
dynamics of soil acari associated with wheat were
studied at Moshtohor, Qualubia Governorate; Egypt
in 1992-1993. Nitrogenous fertilizers increments
the population density of different soil acari
groups. The rate of go kg/fed ammonium nitrate
flourished the mite population density, but at a
higher level of 120 kg/fed, acari groups tended to
decrease in numbers. The rate of 60 kg/Fed. urea
increased the mite population density, while
recommended level of go kg/ Fed, decreased acari
groups population. In treatments of nitrogenous
fertilizers amrnoniu.m nitrate and urea Prostigmata
were occurred in ‘great abundance (60,58%) followed
by Cryptostigmata (22.4,24.9e), Heterostigmata
(7.8,8.2%), Mesostigmata (7.5, 8.1%) and Asti grnata
(2.3,0.7%) in descending order, respectively.