  We consider the effects of a light gluino on the dijet angular distributions
in p - pbar collisions at sqrt(s)=1800 GeV. We show that the slower running of
alpha_s and the production q qbar, g g -> Gino Gino do not significantly alter
the expected angular distributions. On the other hand, single U, D squark
production q g -> Q Gino with subsequent Q -> q g results in dijets whose
angular distributions are dramatically different from that in SM. The CDF data
on dijet angular distributions with integrated luminosity of 106 pb^(-1)
exclude U, D squarks in the mass ranges 170 < m < 650 and 190 < m < 600 GeV, We
consider lower energies as well and show that in a future experimental analysis
for dijet mass below 240 GeV squarks could be observed or ruled out.
