Effect of spacing and curd management on quality seed production and profitability of broccoli var. BARI broccoli 1

Abstract

A two factorial experiment with nine treatment combinations was conducted at Agricultural Research Station (ARS), Pahartali, Khulshi, Chattogram during Rabi season 2019-2020 to find out the best seed production technology for broccoli. These two factors were spacing and curd management. In case of siliqua/ plant, the highest number of siliqua (2453) was acquired from treatment H₂S₂ (de-heading with 60 cm × 60 cm spacing) followed by treatment H₁S₂ (scooping with 60 cm × 60 cm spacing) which was documented as 2054. On the other hand, treatment H₃S₃ (no de-heading with 50cm × 40 cm spacing) produced lowest number of siliqua/ plant which is documented as 677. Treatment H₂S₂ (de-heading with 60 cm × 60 cm spacing) also provided the maximum seeds/ siliqua (9.40), 1000 seed weight (4.37 g) and seed yield (680 kg/ha) .The highest length of siliqua (5 cm) was obtained from treatment H₃S₂ (control with 60 cm × 60 cm spacing) and the lowest length of siliqua (4.55cm) was obtained from treatment H₂S₃ (de-heading with 50cm × 40 cm spacing).  Treatment H₃S₃ (control with 50cm × 40 cm spacing) provided lowest seeds/ siliqua (6.50). Treatment H₁S₃ (scooping with 50 cm × 40 cm spacing) produced the lowest 1000 seed weight (3.17g). The BCR of broccoli was very high due to the high price of broccoli seed. From the result of BCR, it is clear that de-heading of curd is more profitable than scooping and control for the seed production of broccoli. Among de-heading technique, H₂S₂ is more profitable as suggested by its higher BCR (41).