Abstract:
Colocasia esculenta is a highly nutritive vegetable which is very important for human
health with daily diet. The present study was carried out at the farm of Sher-e-Bangla
Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207 during the period of
February 2021 to July 2021 to study the effect of N and K for the growth and
development of BARI panikachu-6 (Colocasia esculenta). Eight levels of N and K
treatments including control were considered for the experiment viz. T
1
(control;
N
0
P
0
K
0
kg ha
-1
), T
2
(RFD; N
100
P
30
K
100
S
15
kg ha
ii
-1
), T
3
(N
50
K
90
kg ha
-1
),
T
4
(N
50
K
75
kg ha
-1
+ P
30
S
15
kg ha
-1
), T
5
(N
75
K
100
kg ha
-1
+ P
30
S
15
kg ha
+ P
30
-1
kg
ha
-1
+ P
30
S
15
kg ha
-1
), T
7
(N
75
K
75
kg ha
-1
+ P
30
S
15
kg ha
-1
) and T
8
), T
6
(N
110
+
P
30
S
15
kg ha
-1
) laid out in randomized complete block design (RCBD) with three
replications. Among the treatments, T
2
(RFD; N
100
P
30
K
100
S
15
kg ha
-1
) showed the best
performance on plant base diameter (30.87 cm), length of rhizome (73.50 cm), fresh
weight of rhizome plant
-1
(3.39 kg), fresh weight stolon palnt
-1
(240.00 g), rhizome
yield (82.24 t ha
kg ha
-1
-1
) and stolon yield (6.12 t ha
-1
) and next to T
8
(N
110
K
110
) considering growth and yield performance whereas control treatment T
1
(N
0
P
0
K
0
kg ha
-1
) showed minimum results. In terms of nutrient status in post harvest
soil, pH, organic carbon (OC) and available P content was found non-significant among
the treatments while the maximum S content (29.43 ppm) was recorded from the
treatment T
3
(N
50
K
90
kg ha
-1
+ P
30
S
15
kg ha
-1
) compared to control. Considering growth,
yield contributing parameters and yield and also nutrient status in soil, the treatment T
2
(RFD; N
100
P
30
K
100
S
15
kg ha
-1
) can be considered as best for BARI panikachu-6
cultivation followed by T
8
(N
110
K
110
kg ha
-1
+ P
30
S
15
kg ha
-1
). So, it can be concluded
that recommended doses of fertilizers specially N and K are very effective for higher
rhizome and stolon yield of Colocasia esculenta at farmers level of cultivation.
