Abstract:
The present study was conducted at the research farm of Sher-e-Bangla Agricultural
University, Sher-e-Bangla Nagar, Dhaka-1207 during the period from February 2021
to July 2021 to observe the effect of nitrogen and phosphorus for the growth and
development of BARI panikachu-1 (Colocasia esculenta). Single factor experiment
consisted of 8 treatments viz. T
1
(N
0
P
0
K
0
kg ha
ii
-1
), T
2
(Recommended Fertilizer Doses;
RFD: N
100
+ K
100
S
15
P
30
K
100
kg ha
-1
S
15
), T
5
kg ha
(N
75
-1
P
15
), T
3
(N
50
kg ha
-1
P
15
kg ha
+ K
100
S
15
-1
+ K
100
kg ha
-1
S
15
), T
6
kg ha
(N
75
-1
P
30
), T
4
(N
50
kg ha
kg
ha
-1
) and T
7
(N
100
P
15
kg ha
-1
+ K
100
S
15
kg ha
-1
). Cowdung @ 5 t ha
-1
was added with
each treatment except control. This experiment was laid out in randomized complete
block design (RCBD) with three replications. Results indicated that the treatment T
2
(RFD: N
100
P
30
K
100
S
15
kg ha
-1
) showed the maximum plant height (87.50 cm), petiole
length (28.97 cm), leaf breadth (23.54 cm), plant base diameter (26.13 cm), length of
stolon (89.23 cm), fresh weight of rhizome plant
-1
(693.30 g), fresh weight of stolon
palnt
-1
(1238.00 g), rhizome yield (17.83 t ha
-1
-1
P
30
kg ha
+ K
100
) and stolon yield (29.41 t ha
)
followed by the treatment T
7
(N
100
P
15
kg ha
-1
+ K
100
S
15
kg ha
-1
) while control
treatment T
1
(N
0
P
0
K
0
kg ha
-1
) showed the minimum results on the above mentioned
parameters. In terms of pH and nutrient status in post harvest soil, available S content
varied significantly but pH, organic carbon (OC) and available P content was nonsignificant
among the treatments. The maximum S content (29.37 ppm) was found
from the treatment T
5
(N
75
P
15
kg ha
-1
+ K
100
S
15
kg ha
-1
S
15
) while the minimum was
recorded from control treatment. The maximum pH, OC and available P content were
recorded from T
2
(RFD: N
100
P
30
K
100
S
15
kg ha
-1
). Therefore, BARI panikachu-1
cultivation, the treatment T
2
(RFD: N
100
P
30
K
100
S
15
kg ha
-1
) can be considered as the
best and next to T
7
(N
100
P
15
kg ha
-1
+ K
100
S
15
kg ha
-1
) under the present study.
