Effect of predecessors on the productivity and phytosanitary condition of hull-less oats in organic farming
Abstract. On a certified organic field a trial of the hull-less oat variety Mina was conducted, sown after peas-sunflower mixture, maize for silage, and fallow. The aim of this experiment was to evaluate the effect of predecessors on the productivity and phytosanitary condition of hull-less oats in...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trakia University. Faculty of Agriculture, Stara Zagora
2016-03-01
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| Series: | Agricultural Science and Technology |
| Subjects: | |
| Online Access: | http://agriscitech.eu/wp-content/uploads/2016/03/004.pdf |
| Summary: | Abstract. On a certified organic field a trial of the hull-less oat variety Mina was conducted, sown after peas-sunflower mixture, maize for silage, and fallow. The
aim of this experiment was to evaluate the effect of predecessors on the productivity and phytosanitary condition of hull-less oats in organic farming. The study
was conducted in the period 2012 – 2014 under field conditions on leached, moderately loamy to slightly clayey smolniza at the Institute of Agriculture in
Karnobat, Bulgaria, on a field certified for organic farming. The trial was conducted with spring hull-less oat, variety Mina. Predecessors – peas-sunflower
mixture, maize for silage and fallow. Phytosanitary monitoring was conducted. The insect reporting was performed through direct investigation for plant pests.
The weed reporting – species composition and density of weed infestation by a quantity-weight method, at the end of tillering and beginning of ear formation
stage. Disease infestation was determined by walking through the plots during crop vegetation, by the route method, by inspection of the plants. The best
predecessor for hull-less oats was fallow, followed by peas-sunflower mixture. The yield was high and the level of weed infestation was comparatively lower
than after maize for silage. During the studied period a tendency for the effect of predecessor on disease infestation was not formed. The predecessors did not
affect the species composition but mainly their density |
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| ISSN: | 1313-8820 1314-412X |