The effect of Timming and Dosage of Kiambang Bokashi (Salvinia molesta) on  the Growth and Yield Shallots (Allium ascalonicum) in Polibag

The research aims to determine the effect of the timing of application and the dosage of water hyacinth bokashi, as well as the interaction between the two, on the growth and yield of red onions in polybags. The research was conducted from March to May 2024 in the Assyifa Housing, Betungan Village, Selebar District, Bengkulu City. The research uses a Completely Randomized Design (CRD) with 2 factors and 3 replications. The first factor is the timing of bokashi application, which consists of three levels: application at planting time (W0), application one week before planting (W1), and application two weeks before planting (W2). The second factor is the dosage of bokashi, which consists of five levels: control (DO); 12.5 grams (D1); 25 grams (D3); 37.5 grams (D4); and 50 grams. (D5). The research results indicate that the timing of application has a significant effect on plant height at 6 MST, the number of leaves at 2 MST, and the dry weight of red onions. The bokashi dosage has a significant effect on plant height at 2 MST, 4 MST, and 6 MST, the number of leaves at 2 MST, and the dry weight of the onions. Mean while, the interaction between the timing of application and bokashi dosage significantly affects all observed variables, except for plant height at 2 MST, 6 MST, and dry weight, which show a very significant effect. The application of bokashi two weeks before planting (W2) is the best timing that yields better growth and results for red onions compared to applying it at planting time (W0) and one week before planting (W1). The bokashi dose (D3) of 33.22 gr is the optimal dosage for promoting growth and yield of red onions.