AKSHIT, R. S. SHEORAN*, D. LOURA, SUNIL AND SATPAL
Department of Agronomy,
Forage Section, Department of Genetics & Plant Breeding,
CCS Haryana Agricultural University,
Hisar-125 004, Haryana, India
*(e-mail : sheoranrs@gmail.com)
(Received : 20 February 2020; Accepted : 21 March 2020)
SUMMARY
As berseem seed yield is responsive to potassium and boron fertilization and their interaction, so in order to find out their effect and relationship, a field experiment was conducted during rabi season of 2017-18 at Forage Research Farm of CCS Haryana Agricultural University, Hisar. Treatment combinations comprised of four potassium levels i.e. 0, 20, 40 and 60 kg K2O/ha and four levels of boron i.e. 0, 2, 4 kg B /ha, and 0.2% B spray at flower initiation and at 50% flowering stage. The experiment was laid out in split plot design and replicated thrice. Maximum number of capsules/m2 (328.10), seeds/capsule (56.43), biological yield (49.91 q/ha) and seed yield (3.43 q/ha) were recorded at 60 kg K2O/ha which were significant higher than control and 20 kg K2O/ha. Number of capsules/m2 increased with increasing levels of boron over lower levels and the highest number of capsules/m2 (338.40), seeds/capsule (56.12), test weight, biological yield (50.81 q/ha) and seed yield (3.63 q/ha) were recorded with foliar spray of boron @ 0.2% spray at flower initiation and at 50% flowering stage. Interaction effect of potassium and boron was also found significant with the combination of 40 kg K2O/ha and 0.2% B spray at initiation and at 50% flowering over control which resulted in maximum number of capsules/m2 and seeds/capsule.
Key words:Berseem, potassium levels, boron fertilization, seed yield