RT Journal Article SR Electronic A1 Kováčik, Peter A1 Kozánek, Milan A1 Takáč, Peter A1 Galliková, Martina A1 Varga, Ladislav T1 The effect of pig manure fermented by larvae of house flies on the yield parameters of sunflowers (Helianthus annus L.) JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis YR 2014 VO 58 IS 2 SP 147 OP 154 DO 10.11118/actaun201058020147 UL https://acta.mendelu.cz/artkey/acu-201002-0016.php AB The effect of fermented pig manure processed on a bed of wooden shavings and fermented for seven days by larvae of house flies on the yield parameters of sunflowers have been investigated on Haplic Luvisol in the pot trial realized in vegetative cage placed on the territory of SAU in Nitra. The experiment consisted of six treatments (0, NPK, Manure<sub>1</sub>, Manure<sub>2</sub>, Manure<sub>3</sub>, Veget). Treatments 0, NPK, and Veget were compared with the treatments Manure<sub>1</sub>, Manure<sub>2</sub>, and Manure<sub>3</sub>, i.e. with fermented manure applied at doses of 4, 6, and 8 t.ha<sup>-1</sup>.The results showed that application of fermented manure resulted in statistically significant greater stem thickness, higher leaf chlorophyll content, composites and harvest yield of seeds. The plants appeared healthy. Increasing the doses of fermented manure resulted in greater harvest yield of achenes and fat content in them. The dose of 4 t.ha<sup>-1</sup> of fermented manure has proven to be insufficient.Out of the tested doses of 4, 6 and 8 t.ha<sup>-1</sup> of fermented manure the highest achene yield has been achieved at the dose of 8 t.ha<sup>-1</sup> but it was lower than the yield of the treatments fertilized by NPK fertilizers or Veget. From the viewpoint of achene yield quality (fat content) out of six variants the best parameters were achieved with the treatment where fermented manure at the dose of 8 t.ha<sup>-1</sup> was applied.The gathered data point towards the applicability and usefulness of manure processed by larvae of flies in agronomy. It is of note, that the manure fermentation period can be significantly shortened, whereby reducing the storage difficulties.