Morphological and physiological response of daffodil (Narcissus jonquilla cv. German) to water hyacinth compost and humic acid

In this study, water hyacinth compost and humic acid were used in the production of Narcissus jonquilla cv. German.

The present experiment was performed as a factorial in a completely randomized design. The first factor was water hyacinth compost (Control, 25, 50, 75 and 100%) and the second factor was humic acid (Control, 250, 500 mg L-1).

According to the results, the effect of compost, humic acid and their interaction on most of the studied traits was significant. The highest flowering stem height and the highest concentration of iron increase compared to control treatment) were recorded in compost 50% + 500 mg L-1 humic acid. The highest number of leaves and calcium concentration was observed in compost 25% + 250 mg L-1 humic acid. The longest leaf length increase compared to control treatment) was related to compost 75% + 500 mg L-1 humic acid. The maximum flower diameter size was recorded in compost 75% + 250 mg L-1 humic acid. The highest concentration of potassium was reported in compost 75% + 500 mg L-1 humic acid.

According to the obtained results, water hyacinth compost with humic acid due to improving the root environment and increasing the better absorption of nutrients increased the quantitative and qualitative characteristics of daffodils compared to the control treatment. Therefore, water hyacinth compost with the use of humic acid for growing daffodils is recommended.