Abstract:
An experiment was conducted at Central Farm of Sher-e-Bangla Agricultural
University, Dhaka during October, 2007 to February, 2008 to study the effect ofNPK
and mulching on growth and yield of broccoli. Four levels ofNPK fertilizers viz., Fo
(0:0:0 kg NPK/ha), F1 (100:40:50 kg NPK/ha), F2 (140:50:80 kg NPK/ha) and F3
(180:60:110 kg NPK/ha) and four levels of mulches viz., Mo (control), M1 (rice
straw), M2 (water hyacinth) and M3 (black polythene) were used as treatment in the
experiment. The experiment was laid out in two factors randomized complete block
design with three replications. Different levels of fertilizers had significant effect on
growth and yield contributing characters in broccoli. In case of NPK, the highest yield
was produced by F2 treatment (13.98 t/ha) whereas the lowest yield (8.463 t/ha) was
found in Fo. In case of mulching, the maximum curd yield (13.33 t/ha) was recorded
from M3 and the lowest yield (9.627 t/ha) was found in Mo. For combined effect, the
highest yield (17.78 tlha) was obtained from F2M3 and the lowest yield (7.433 t/ha)
was obtained from FoM0• Economic analysis revealed that F2M3 treatment
combination gave the highest benefit cost ratio of 2.45 whereas FoMo showed the
lowest benefit cost ratio of 1.52. It may be concluded that 140:50:80 kg NPK/ha and
black polythene mulch may be suitable for growth and yield of broccoli.
