TY  JOUR
TI  EFFECT OF SEED TIME AND MINERALS  ON  PRODUCTIVITY OF SUNFLOWER AGRICULTURAL AGROCOENOSIS IN THE CONDITIONS  OF THE RYAZAN REGION
KW  sunflower
KW  sowing
KW  fertilizers
KW  yield
KW  terms
KW  mineral
JO  Bulletin Samara State Agricultural Academy
AU  Makarova, M.P.
AU  Vinogradov, D.V.
PY  2019
IS  4
PB  Samara State Agrarian University