Abstract:
A field experiment was conducted at the Horticulture farm of Sher-e-Bangla
Agricultural University, Dhaka during the period from October 2021 to March 2022 in
Rabi season to perform a comparative study of varieties and split application of muriate
of potash on growth and yield of onion. The experiment consisted of two factors, and
followed Randomized Complete Block Design (RCBD) with three replications. Factor
A: Varieties of onions-3 types e.i.V
1
=BARI Piaz-1, V
ii
2
=BARI Piaz-4, V
=BARI Piaz-6
and Factor B: Split application of potash fertilizer M
=½ basal application + ½ 25 DAT (Days after transplanting), M
1
3
=Basal application (Full dose), M
= ⅓ basal application
+ ⅓ 25 DAT + ⅓ 50 DAT. Experimental results revealed that different varieties and
split application of muriate of potash fertilizer significantly influenced the growth and
yield of onion. In case of different onion varieties, BARI Piaz-4 (V
3
) variety gave the
highest bulb weight per plant (66.52 g), yield per plot (1.60 kg) and yield per hectare
(17.74 t) of onion. Among different split application of potash fertilizer, the highest
bulb weight per plant (59.97 g), bulb yield per plot (1.44 kg) and onion yield per hectare
(15.99 t) were founded in the M
3
2
treatment (⅓ basal application + ⅓ 25 DAT + ⅓ 50
DAT). In the case of combination treatment the V
2
M
combination treatment gave the
highest bulb weight per plant (73.50 g), yield per plot (1.76 kg) and bulb yield per
hectare (19.59 t) comparable to other treatment combination. Therefore, it would be
suggested that cultivation of BARI Piaz-4 along with 3 times split application of
muriate of potash fertilizer (V
2
M
3
3
) combination treatment would help to influence plant
growth and increase its ability to enhanced better yield production of onion.
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
