Abstract:
The experiment was conducted in the Farm of Sher-e-Bangla Agricultural
University, Dhaka, during October 2006 to march 2007 to find out the eulèct of
mulching and potassium on growth and yield of carrot. The experiment consisted of
two factors. Factor A: Four levels of mulch viz. M
0
: Control, M
1
: Black polythene,
M2
: Water hyacinth and M
6
: Saw dust; Factor B: Four levels of potassium viz. K
Control,
K1: 180
kg K 2
0/ ha, K
2: 200 kg K
20/ ha and K
3: 220 kg K
2
0/ ha. The
experiment was laid out with randomized complete block design (RCBD) with three
replications. In case of mulching, plant height and fresh weight of root is significant
for growth stage. The highest (36.35 t/ha) marketable yield was obtained from M
1 ,
while the minimum (31.57 t/ha) marketable yield was recorded from M
0
. In case of
potassium, plant height and dry matter content of roots is significant for growth
stage, K
2
produced the highest (36.20 t/ha) marketable yield of carrot while control
plots produced the lowest (30.05 t/ha). For combined effect, plant height, length of
root, diameter of root and fresh weight of root is significant for growth stage and
M1K.2
produced the highest marketable yield
(38.93
t/ha). while M
0K0
gave the
lowest (25.14 t/ha). So, black polythene mulch with application of 200 kg K
2O/ha is
suitable for better growth and yield of carrot
