Effects of Nitrogen and Potassium on Growth and Development of Brisbane Lily (<I>Eurycles amboinensis<I> Lindl.)

Abstract

The study aimed to determine the effect of nitrogen and potassium on growth and Development, Flower quality and bulb yield of Brisbane lily (Eurycles amnboinensis Lindl.). The experimental design was factorial in CRD with 2 factors i.e. 1) N concentrations at 100, 200 and 300 mg/l and 2) K concentrations at 100, 200 and 300 mg/l. The plants were supplied with different combinations of nitrogen and potassium in solution at 3 I/m² (20 plants) at twice a week. The other mineral nutritions were supplied at the same concentration in each treatment i.e. P 50 mg/l, Mg 12.32, Ca 45.64, B O.22, Mn 0.54, Zn 0.26, Cu 0.025, Mo 0.04 and Fe 0.44 mg/l. It was found that bulb size, number and total weight of bulb supplied with 100 mg/I of N Were not significantly difference from the highest level of N application (300 mg/). Plants supplied with 100 mg/I of K gave better result than at 300 mg/l. Therefore, the optimum ratio of N:K concentration for growth and bulb production of Brisbane lily was 100:100 mg/l, respectively.