Published in Scientific Papers. Series A. Agronomy, Vol. LXV, Issue 2
Written by Tsenka ZHELYAZKOVA, Mariya GERDZHIKOVA
The aim of this study was to establish the influence of organic leaf fertilization on the productivity and botanical composition of natural grassland Agropyron repens type in the region of South-Central Bulgaria (305 m altitude ). The experiment was carried out with leaf organic fertilizer Naturamin Plus, during the period 2018-2019. The trial was designed by the block method in 4 repetitions and 3 doses of fertilizer were tested: 1,500; 2,500 and 3,500 ml.ha-1. Results obtained for the yield were statistically processed by ANOVA. The use of the Naturamin Plus in natural grassland Agropyron repens type has been found to have a positive effect on productivity regardless of weather conditions over the years. Average for the period of investigation, more green and dry mass were obtained by treatment with a dose of 2,500 ml.ha-1 - respectively 31.6% and 30.7% more compared to the control. In grassland with predominant species Agropyron repens (L.) P. Beauv., the largest share is occupied by perennial cereal grasses, while legumes have a small share. Fertilization with liquid organic fertilizer Naturamin Plus increases the participation of perennial cereal and legume grasses and reduces that of weeds.
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