EFFECT OF POTASSIUM AND BORON FERTILIZATION ON SEED YIELD AND ITS ATTRIBUTING CHARACTERS IN BERSEEM (TRIFOLIUM ALEXANDRINUM L.)

EFFECT OF POTASSIUM AND BORON FERTILIZATION ON SEED YIELD AND ITS ATTRIBUTING CHARACTERS IN BERSEEM (TRIFOLIUM ALEXANDRINUM L.)
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

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