Abstarct: Greenhouses, as an integral part of modern agriculture, have a large share in the production of agricultural crops. The goal of greenhouse is creating a closed space, that the temperature and humidity inside are controllable. Several models have been proposed for greenhouse. A greenhouse is Multi-input multi-output systems and also, there is a coupling in system. The presented models for the system have not full accordance with the real system. In model used in this thesis, the temperature and humidity inside the greenhouse are system state variables and outputs. Temperature and humidity of outside the greenhouse and sunlight are disturbances entered into the system. Today, fuzzy systems have a large share in academic research and industrial applications. Fuzzy systems have performance of resistant against uncertain, so they are used in the controller. In this thesis, fuzzy systems Takagi - Sugeno are used for identification of uncertain terms. Model Reference Adaptive Controller structure is used in controller design. In controller presented in this thesis has been ensured the system stability. Most of works presented in the past, controllers have not proven stability. The control system is presented have usability on a great group of multivariable systems.