TY JOUR TI ELEMENTS TO INCREASE THE YIELD OF TOMATO IN THE CONDITIONS OF THE LOW VOLGA REGION KW pepper KW cultivar KW hybrid KW fertilizer KW yield KW mineral KW water soluble JO Bulletin Samara State Agricultural Academy AU Kalmykova, E.V. AU Petrov, N.Y. PY 2017 IS 2 PB Samara State Agrarian University