TY JOUR TI PHOTOSYNTHETIC ACTIVITY AND YIELD OF BARLEY WITH THE APPLICATION OF FERTILIZERS AND GROWTH STIMULANTS KW barley KW peas KW yield KW stimulant KW photosynthetic KW activity KW fertilizer JO Bulletin Samara State Agricultural Academy AU Karlov, E.V. AU Vasin, A.V. AU Vasin, V.G. PY 2016 IS 1 PB Samara State Agrarian University