摘要：The investigation took place during 2006 . 2009 at the experimental field of the Institute of Agriculture and Seed Science —Obraztsov chiflik" . Rousse, with 4-pole ecological crop rotation and alternation soy-bean . wheat . beans . winter oats, under conditions of biological agriculture. The oats were RS2 variety, and the predecessor - field bean Obraztsov chiflik 12 variety. The experiment was started after the block method in two variants . control (without fertilization) and leaf fertilization by humous fertilizer Humustim in 4 replications and the harvesting plot being 52,5 m2. Technological schemes, according the requirements of the biological agriculture were applied during the crops growing in crop rotation. Data analysis showed that the grain yield obtained from winter oats average for the period, in the variant without fertilization was 2400 kg/ha with variation from 710 kg/ha in 2006 to 3760 kg/ha in 2009. The leaf fertilization by humous fertilizer Humustim had a positive influence on yield, as the effect average for the period was 16% and varied, depending on the meteorological conditions in years. The yield obtained from oats, grown under conditions of organic agriculture, reported average for the period of the investigation was low and formed 48% in the variant without fertilization and 55% in leaf fertilization from the potential abilities of the variety. The qualitative indices of the grain, formed under conditions of biological agriculture were determined. The grain obtained was ecologically pure and could be involved as a component in combined forage mixtures for feed of animals, bred under biological conditions and for production of dietetic human foods . oat flakes, semolina, etc
