The effect of supplementation of liquid fertilizer from water hyacinth (Eichhornia crassipes) and Siam weed (Chromolaena odorata) on Taiwan napier grass

The objective of this study is to examine the quality of liquid fertilizer from water hyacinth and Siam weed and to identify its effect on Taiwan napier grass quality and growth. This study was performed from November 2019 to January 2020. This study was designed according to a completely randomized design employing 4 treatments and 5 replicates. The treatments encompassed: T0=Taiwan napier grass without organic liquid fertilizer supplementation (control; T1= Taiwan napier grass + 20 L/ha = 300 mL/ plot; T2= Taiwan napier grass + liquid organic fertilizer 30 L/ha = 450 mL/ plot; T3= Taiwan napier grass + liquid organic fertilizer 40 L/ha = 600 mL/plot. The observed parameters were plant height, number of the tiller, number of leaves, chlorophyll index in each treatment. The result of the analysis of variance indicated that the liquid organic fertilizer had a significant effect on the plant height, number of the tiller, number of leaves, and chlorophyll index. From this study, it can be concluded that the combination of 50% water hyacinth and 50% Siam weed is the most optimal combination at the dosage of 450 mL/plot (T2) for Taiwan napier grass.