TY JOUR TI MODELS FOR INFECTION STOCK DETERMINATION IN SOIL KW infection stock KW precipitation KW moisture KW soil KW dynamic model KW morphological modeling KW timing structure KW natural and environmental structure JO Bulletin of KSAU AU Tsuglenok, N.V. AU Nikulochkina, S.N. PY 2012 IS PB Krasnoyarsk State Agrarian University