Ecological Systems and Devices Annotation << Back Use of electric resistance between root system and ground for the characteristic of a condition of young wood plants Terehova N.V., Fedotov G.N. The way of definition of size of active root system of the plants, based on measurement of electric resistance between root system and ground is developed. It has been assumed, that at plants, with the greater sheet weight at which high транспирация, the area of active root system should be more, and her electric resistance less. The interrelation of sheet weight of a plant and electric resistance between ground and a plant is established.