Study on the effects of aminobest and biobest organic fertilizers on the productive layering capacity and grain yield in winter common wheat (triticum aestivum l.)

The study took place during the period 2013 – 2015 at the experimental field of IASS “Obraztsov chiflik” – Rousse. A field experiment was conducted with Aminobest and Biobest organic fertilizers in Venka 1 winter common wheat on soil type of strongly leached chernozem, after the block method in 4 replications, experimental plot being 10 m2. The sowing was carried out during the first week of October with sowing norm of 500 germ.s./m2 after legume predecessor. The first treatments with Aminobest and Biobest organic fertilizers were in stage of layering, at a dose of 0.250 ml/da. The following treatments were at ear formation and filling the grain. The following important conclusions could be made of the study: The treatments with Aminobest and Biobest organic fertilizers increase the productive layering capacity of wheat and increase significantly grain yield. The treatments with Aminobest and Biobest organic fertilizers during the spring vegetation of wheat in years of air drought cause difficulties in its feeding. Aminobest organic fertilizer stronger influences positively on the productive layering capacity and grain yield compared to Biobest organic fertilizer.