Abstract:
A field experiment was accomplished at the horticulture farm of Sher-e-Bangla
Agricultural University, Dhaka, during the period from October 2021 to December
2021 to evaluate the impact of different organic leachate and clybio concentrations on
growth and yield of ornamental sunflowers. Organic leachates, viz. T = Control (No
leachate application), V = Vermicompost leachate, N = Neem oil cake leachate, and M
= Mustard oil cake leachate, and Clybio concentrations, viz. C
1
= No clybio application
(Control), C
2
= Clybio 4 ml/L water and C
3
= Clybio 6 ml/L, were used in this
experiment arranged in a Randomized Complete Block Design (RCBD) with three
replications. Data on different growth, flower yield and quality attribute parameters
were taken, and all the treatments showed significant variations. Maximum stalk
diameter (7.1 mm), ray floret area (6.3 cm
2
), flower head size (15.0 cm), flower head
weight (30.4 g), number of secondary flowers per plant in the cut-head (13.3) and the
vase life of half-blooming stage (7 days) were found in organic leachates (N), whereas
minimum in (T) and among different clybio concentrations, maximum stalk diameter
(6.6 mm), ray floret area (6.0 cm
2
), flower head size (14.3 cm), flower head weight
(28.1 g), number of secondary flowers per plant in cut-head (14.3) were found from
(C
3
) whereas minimum in (C
1
). In terms of combination effects, (NC
3
) showed the
superiority of all parameters, whereas the minimum was found in (TC
1
). In view of
overall performances, the neem oil cake leachate with higher clybio concentrations has
the potential for quality sunflower production.
Description:
A Thesis
Submitted to Department of Entomology,
Faculty of Agriculture.
Sher-e-Bangla Agricultural University,
Dhaka-
In partial fulfillment of the requirements for the degree of
MASTERS OF SCIENCE (MS)
IN
DEPARTMENT OF HORTICULTURE
