A field experiment was accomplished at the Horticulture farm of Sher-e-Bangla Agricultural University to study the effect of different plant spacing on the growth and flowering of Lisianthus (variety-SAU Blue Nandini). Plant Spacings viz. S1= 30 cm x 15 cm (BARI recommended for Gerbera), S2= 30 cm x 20 cm, S3= 30 cm x 25 cm were used in this experiment arranged in a Randomized Complete Block Design with three replications. Data on different growth and flower yield attribute parameters were taken in which all the treatments showed significant variations. The results showed that applied spacing significantly affected growth and flowering attributes positively. Tallest plants (75.9 cm), the maximum number of leaves (68.7), leaf length (6.0 cm), highest SPAD value (51.0), highest stem length (58.4 cm) and maximum stem diameter (5.3 mm), highest peduncle length (12.6 cm), maximum stem number per plant (6.5), flower number per plant (42.3) was found from (S3) whereas minimum in (S1). The study showed that higher spacing application would be the potential for commercial Lisianthus production among all these.

An experiment was accomplished in the Horticulture Farm, Sher-e-Bangla Agricultural University, Dhaka, during the period from November 2018 to May 2019 to study the influence of thiourea at different concentration levels on the growth and yield of light pink lisianthus (Eustoma grandiflorum). Thiourea concentrations, viz., C1: 500 ppm, C2: 1000 ppm, and C3: 1500 ppm was used in this experiment, arranged in a randomized complete block design with three replications. Data on growth, physiology, yield, and quality attribute parameters were taken, and all the treatments showed significant variations. Among thiourea concentrations, C3 treatment produced tallest plant (59.6 cm), maximum stem number/plant (4.4), flower/plant (26.6), the highest SPAD value (56.6), the largest flower head diameter (6.3 cm), and the yield/plot (793.2). Overall, thiourea at 1500 ppm concentrations produced the best result and the greatest potential for increasing the Lisianthus flower production.