PRODUCTIVITY AND QUALITY TRAITS OF SPRING FORAGE OATS PRISTA 2 VARIETY, GROWN UNDER CONDITIONS OF ORGANIC AGRICULTURE IN THE REGION OF NORTH-EAST OF BULGARIA

摘要

The investigation was conducted during the period 2007 - 2009 at the Experimental filed of the Institute of Agriculture and Seed Science "Obraztsov chiflik" - Rousse. with ecological forage crop rotation, including cultivation of soybean, spring forage oats, peas - vetch mixture for green fertilization and maize for gram under conditions of organic agriculture. The spring oats variety was Prista 2, after predecessor, soy-bean, Zarya variety. The experiment was started after the block method in two variants - control (without fertilization) and fertilization with soil and foliar organic fertilizer Biohumus in 3 replications, the harvesting plot being 35 m2. Technological schemes according the requirements of the organic agriculture were applied during the crop growing in crop-rotation. Data analysis showed that yield obtained in the variant without fertilization (conditions of natural nutritive regime) average for the period was 1800 kg/ha with wide variation, from 180 kg/ha during the unfavourable2007 to 3260 kg/ha in 2008. The soil and foliar fertilization by the organic fertilizer Biohumus showed positive effect on yield, being for the period 180. kg/ha (10%) and varied depending on the climatic conditions in years. The biological qualities ofgrain -crude protein and oils, formed under conditions of organic agriculture average for the period were in the. limits of the inherited disposition of the used variety. The obtained ecological oats grain could be successfully used as a component in combined forage mixtures, used as feed of animals, bred under biological conditions.