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.
A field experiment was conducted at the Horticulture Farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, from June to October 2021 to evaluate the influence of Clybio concentrations on summer onions (Allium cepa) production. The variety used was BARI Piaz-3. The single factorial experiments were laid out in a Randomized Complete Block Design (RCBD) with three replications. The experiment consisted of four treatments, namely, T0 = control (no Clybio application), T1 = Clybio @ 2 ml/L, T2 = Clybio @ 4 ml/L and T3 = Clybio @ 6 ml/L, and in total, this was applied six times, starting from 10 DAT until 60 DAT and was applied in a foliar manner to both leaves and surrounding soil. Among the treatments, the maximum plant height (60.8cm), the number of leaves per plant (16.7), leaf length (54.2cm), leaf weight (31.3g), diameter of pseudo stem (11.9mm), root length (8.4cm), number of roots (33), bulb diameter (43.8mm), bulb length (52.7mm), weight of a single bulb (45.7g), average bulb yield per plot (33.2 t/ha) was recorded at T3 treatment. The highest length of pseudo stem (49.4 mm) was found in the T1 treatment. On the contrary, the minimum plant height (38.3cm), number of leaves per plant (7.0), leaf length (24.1cm), leaf weight (17.7g), root length (4.5cm), number of roots (26), bulb diameter (22.7mm), bulb length (42.0mm), weight of a single bulb (22.0g), average bulb yield per plot (16.0 t/ha) was observed at T0 (control) treatment. The lowest diameter of the pseudo stem was found at the T1 (7.5mm). No statistically significant variation was found in the length of the pseudo stem (mm) in response to different treatments. When compared to control (T0), the highest increase in yield percentage was observed at T3 treatment (107.5%). A highly significant, very strong (R2 = 0.99) and positive correlation was discovered between bulb weight and root length, indicating that bulb weight increased as root length increased. Considering the aforementioned findings, T3 (Clybio @ 6 ml/L) treatment delivered the best results in terms of growth and yield attributes of offseason onions.
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