Author(s):

Ankur Shukla, Raghvendra Singh, Sandeep Kumar Singh, Shivanand, Dev Mani Shukla and Ram Singh

Abstract: The present study entitled “Response of Boron Levels and Application Methods on Growth and Yield of Rice (Oryza sativa L.)” in north- western plain zone of India was carried out at School of Agricultural Science and Engineering, IFTM University, Moradabad in 2018-19. The ten treatments T₁ = 100% RDF (150 :60 :40 kg ha^-1); T₂ = 100% RDF + 0.5 kg B ha^-1 (SA); T₃ = 100% RDF + 0.5 kg B ha^-1(SA) + 0.2% B spray at 25 & 50 DAT; T₄ = 100% RDF + 0.5 kg B ha^-1 (SA) + 0.3% B spray at 25 & 50 DAT; T₅ = 100% RDF + 1.0 kg B ha^-1(SA); T₆ = 100% RDF + 1.0 kg B ha^-1 (SA) + 0.2% B spray at 25 & 50 DAT; T₇ = 100% RDF + 1.0 kg B ha^-1 (SA) + 0.3% B spray at 25 & 50 DAT; T₈ = 100% RDF + 2.0 kg B ha^-1; T₉ = 100% RDF + 2.0 kg B ha^-1 (SA) + 0.2% B spray at 25 & 50 DAT; T₁₀ = 100% RDF + 2.0 kg B ha^-1 (SA) + 0.3% B spray at 25 & 50 DAT combination were tested in randomized block design (RBD) with three replication. T₁₀ observed significant increase in all yield attributes viz., no. of tillers per m² area, panicle length (cm), number of filled grain panicle^-1, number of unfilled grain panicle^-1, 1000- seed weight (g), grain yield (q ha^-1), biological yield (q ha^-1) and harvest index respectively, over rest of the treatments. In T₁₀ treatments significantly increased the no. of tillers m² area (199.65, 210.70, 212.50 and 213.15) 30, 60, 90 and harvest stage, fresh weight (66.79 g, 147.50 g, 163.00 g and 163.05 g plant^-1) at 30, 60, 90 and harvest stage, panicle length (31.55 cm), number of filled grain panicle^-1 (191.20), number of unfilled grain panicle^-1 (20.80), biological yield (7.7 t, 10.5 t and 18.1 t ha^-1) and harvest index (42.26 %) respectively.

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