Abstract:
A field experiment was conducted at the Farm of Sher-e-Bangla Agricultural
University, Dhaka, Bangladesh during Rabi season from November 2019 to March,
2020 to evaluate the effect of different levels of potassium on growth and yield of
onion (BARI piaj-4). The experiment was laid out in a RCBD with three replications.
Eight different levels of potassium were used as treatments viz. 0, 18, 36, 54, 72, 90,
108, and 126 kg ha
-1
. Results revealed that application of potassium had a significant
effect on growth parameters specifically Plant height (cm), Number of leaves per
plant, Length of leaves (cm), Fresh weight of leaves (g), Fresh weight of bulb (g),
Diameter of bulb (cm), Dry weight of bulb (g), Length of bulb (cm) and Yield (t ha
).
The highest bulb yield (19.83 t ha
-1
) and maximum bulb diameter (5.05cm), weight of
onion bulb(65.67g) were obtained with 90 kg K ha
-1
.The lowest bulb yield (13.07 t
ha
-1
) was recorded in the plot that received no potassium fertilizer. On overall
considerations, 90 kg K ha
-1
was considered as optimum dose for the yield of onion
under the experimental conditions.
-1
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
SOIL SCIENCE
SEMESTER: JANUARY-JUNE, 2019
