The stochastic properties of a plasma are taken into account in the consideration of the modulational interactions of waves associated with lower-hybrid (LH) resonance. The limits of applicability of the theory of weak plasma turbulence in the description of the modulational processes are found. It is demonstrated that the development of the modulational instability of waves with frequencies at the LH resonance results in a rapid decrease in stochasticity. This effect is associated with the formation of coherent structures due to the modulational interactions. Eventually a state with local minima of entropy in places where the coherent structures are located is formed. The description of the interaction between waves and particles in the coherent structures is discussed.