%0 Journal Article %T ASSESSMENT OF THE INVESTMENT EFFICIENCY OF USING A COMBINED IRRIGATION SYSTEM %A Travkin, V.S. %A Mischenko, N.A. %A Evseev, E.Y. %A Travkina, A.R. %K irrigation, sprinkler irrigation, center-pivot irrigation machine, combined irrigation system, land-use coefficient, investment efficiency, annual economic effect, payback period, net present value %J MOSCOW ECONOMIC JOURNAL %D 2026 %N 11 %P 18 %I Electronic science