  We show that the recently measured asymmetry in helicity-angle spectra of the
Lambda-hyperons produced in the reaction pp -> K^+Lambda p reaction and the
energy dependence of the total pp -> K^+Lambda p cross section can be explained
consistently by the same Lambda p final-state interaction. Assuming that there
is no final-state interaction in the Sigma^0 p channel, as suggested by the
available data, we can also reproduce the energy dependence of the
Lambda/Sigma^0 production ratio and, in particular, the rather large ratio
observed near the reaction thresholds. The nominal ratio of the Lambda and
Sigma^0 production amplitudes squared, i.e. when disregarding the final-state
interaction, turns out to be about 3, which is in line with hyperon production
data from proton and nuclear targets available at high energies.
