Abstract:
SAU Perilla-1 (Golden Perilla BD) is a latest oil crop variety enriched with Omega-3 fatty acid,
which is introduced by Sher-e-Bangla Agricultural University in 2021. The seed contains ⁓40%
edible oil and is recommended for growing in Kharif-2 season when no oil crop is grown in
Bangladesh. However, for Robi seasonal trail, the crop was sown on 21 November (D
1
), 28
November (D
2
), 05 December (D
3
), and 12 December (D
4
) with 40 cm × 40 cm (S
1
), 40 cm ×
30 cm (S
2
), and 40 cm × 20cm (S
3
) planting configurations maintained in each of the dates.
The research was aimed mainly on thermal effects on phenological parameters (germination,
flowering and biological yields) as evaluated by the Growing Degree Days (GDD) and Heat
Use Efficiency (HUE) over stover yield and grain yield of SAU Perilla-1. The results revealed
that sowing dates had significant effect on the yield variations as evaluated by the studied
parameters of the crop. However, D
2
showed the uppermost level of seed weight per plant. The
highest seed weight per plant was recorded due to the effect of S
3
and that of the value touched
at the bottom for S
2
. The maximum seed weight was recorded in D
2
S
3
and that of the lowest
was found in D
4
S
3
. The GDD values increased with increasing days to germination of seeds.
Sowing date strongly influenced the GDD requirement for germination of SAU Perilla-1. When
the crop was sown on D
1
, 75 days were needed accumulating 1670.4 ℉ for flowering of the
crop. The GDD requirement was highest (1802℉) in D
4
sowing treatment, when 82 days were
required to initiate flowering. The GDD requirement declined as sown on D
2
dates. The
results indicated that the variation in temperature prevailed under different dates of sowing.
HUE was higher in producing stover plant when sown on 21st November (D
1
) with second
highest grain production (4.10 mg/plant//℉/Day). Contrary to that the highest HUE for grain
(8.13 mg/plant//℉/Day) was yielded in D
2
sowing date although the stover production was
reduced from that of D
1
treatment found. When sowing is delayed, either of grain and stover
synthesis were lowered down as found in D
3
and D
4
treatments
Description:
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the
requirements for the degree of
MASTER OF SCIENCE
IN
AGRONOMY
