Effect of nitrification inhibitors on fertiliser particle size distribution of the DASA® 26/13 and ENSIN® fertilisers.

Effectiveness of the spinning disc fertiliser spreaders is affected by the physical properties of the fertiliser. One of the most important factors is the fertiliser particle-size distribution which depends upon the size of the fertiliser particles. The aim of the paper was comparison of two very similar fertilisers from the same manufacturer DUSLO, Inc. using granulated nitrogen fertiliser with sulphur content DASA ® 26/13 and nitrogen fertiliser ENSIN® containing sulphur and nitrification inhibitors dicyandiamide DCD and 1, 2, 4 triazole - TZ. Comparison was done by evaluation of the particle-size distribution of the fertiliser separated at first in the vertical air flow by K-293 Laboratory screening machine with steeply increasing flow speed. The airflow speed was regulated by airflow volume from 60 to 150 m 3 h -