[en] The contribution from the interference of the amplitudes of the single-photon mechanism and the weak mechanism, determined by neutral weak currents, was calculated for the differential cross section of electroproduction of π-mesons on nucleons e^-+N → e^-+N+π. P-odd effects in the scattering of longitudinally polarized electrons by a polarized target were investigated. The amplitudes of the electromagnetic and weak mechanisms were found for the pseudovector and pseudoscalar variants of the Born approximation. The difference in the cross sections of production of π-mesons near the threshold in electron and positron scattering increased with momentum transfer squared and this difference for the production of charged pions was one order less than the difference in the cross sections of production of neutral pions up to values of -k²=4 (GeV)²