Abstract:
The experiment was conducted at experimental field of Sher-e-Bangla Agricultural
University, Dhaka, Bangladesh during October 2007 to February 2008 to determine
the effect of spacing and potassium on the growth and yield of broccoli. The trial
consists of 12 treatment combinations of 3 spacing and 4 levels of fertilizer
application. Maximum plant height, number of leaves per plant, maximum fresh
weight of leaves per plant, leaf dry weight per plant, primary curd weight, primary
curd diameter, number of secondary curd per plant, weight of secondary curd per
plant, curd dry weight per plant and yield per plant (372.80g) were recorded in
widest spacing but the highest stem length, and yield/ha
35
were recorded from the
closest spacing. Maximum plant height, number of leaves per plant, length of
largest leaf and largest leaf breadth per plant, fresh weight of leaves per plant, leaf
dry weight per plant, highest stem length, primary curd weight, primary curd
diameter, number of secondary curd per plant, weight of secondary curd per plant,
curd dry weight per plant and yield per plant and yield/ha were obtained from 120
kg K/ha application. In combination of plant spacing and potassium fertilizer
application, the highest primary curd weight per plant (252.20 g), primary curd
diameter, number of secondary curd per plant, weight of secondary curd per plant
(117.20 g), curd dry weight per plant and yield per plant (439.10g) were obtained
from the combination of 60 cm x 60 cm and 120 kg K /ha and yield/ha (16.61t)
were obtained from the combination of 60cm × 40cm
and 120 kg K/ha. The
highest net return (Tk.210514.00/ha) and benefit cost ratio (3.01) was obtained
from 60cm × 40cm
and 120 kg K /ha combination. From the result it may be
concluded that treatment combination 60cm × 40cm
and 120 kg K /ha was
promising for application.
