TY CONF TI Organic, organomineral fertilizer system, defecate, chernozem leached. KW leached chernozem KW organic fertilizers KW mineral fertilizers KW defect KW humus content. JO XIII All-Russian scientific-practical conference of young scientists «Achievements and prospects of development of the Russian agriculture", dedicated to the memory of R.G. Gareev AU Korchagin, I.. AU Kol'cova, O.. PY 2023 PB TRIA FRC Kazan Scientific Center of RAS