TY JOUR TI INFLUENCE OF WEATHER CONDITIONS, SOIL PROCESSING SYSTEMS AND FERTILIZERS ON THE YIELD AND QUALITY STRUCTURE OF SPRING WHEAT KW wheat KW soil KW system KW processing KW fertilizers KW structure KW protein content JO Bulletin Samara State Agricultural Academy AU Bakaeva, N.P. PY 2019 IS 4 PB Samara State Agrarian University