TY JOUR TI ECOLOGICAL MONITORING OF THE CONTENT OF TUBER NITRATES IN THE AGROECOSYSTEM THE GARDEN-KITCHEN GARDEN OF THE FOREST-STEPPE ZONE OF KRASNOYARSK REGION KW ecological monitoring KW forest-steppe zone KW agroecosystem KW nitrates KW contents KW tubers KW potatoes KW carrots KW beet KW ionometric method JO Bulletin of KSAU AU Demidenko, G.A. PY 2015 IS PB Krasnoyarsk State Agrarian University