The influence of organic fertilizers on the growth and yield of broccoli (Brassica oleracea L. var. italica)

The experiment was conducted in order to determine the influence of organic fertilizers on the growth dynamics and yield of broccoli grown in the open field. The variety Verdija F1 cultivated in Skopje region during one year (2018) was used in the experiment. The treatments were as follows: Ø control - no use of organic fertilizer, V-1 - foliar treatment with Biohumus, V-2 - foliar treatment with Orgalife, V-3 - foliar treatment with Bio – Vital. The treatments were conducted every 10 days, starting on 19.08.2018, three times during vegetation period. The following traits were examine: dynamics of growth and broccoli yield. According to the results, the V-2 foliar treatment with the organic fertilizer Orgalife resulted in considerable higher yield on the central flower (6.98 t/ha) as compared to the control treatment (5.41 t/ha), proven with statistically significant difference, at the level of 0.05 with the LSD test. The results obtained for the average height of the plants in the three treatments showed that there are highly statistically significant differences at the level of 0.01 between the V-2 treatment (55.6 cm) and the control (48.7 cm). According to the overall results of the experiment, it can be concluded that the V-2 foliar treatment has given the best results in both traits as the plant height and the yield obtained