National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
In order to find out suitable crop establishment technique and seed rate for obtaining optimum growth and yield of direct seeded hybrid rice, Arize AZ-8433 DT, an experiment was carried out during kharif 2019 at Instructional-cum-Research Farm IGKV, Raipur, Chhattisgarh in split-plot design with three replications. The crop establishment techniques used as main plot were line sowing with seed priming (M1), line sowing without seed priming (M2), broadcasting with seed priming (M3) and broadcasting without seed priming (M4). Seed priming was done with 1% KCl solution. The seed rate treatments incorporated as sub-plot were 15“kg ha-1 (S1), 20 kg ha-1 (S2), 25 kg ha-1 (S3) and 30 kgha-1 (S4). The seeds primed with 1% KCl and sown in line (M1) recorded the maximum values for emergence percentage, number of total tillers m-2, number of leaves m-2, dry matter m-2, number of effective tillers m-2, panicle weight and number of filled grains panicle-1 which resulted in higher grain yield, straw yield, harvest index, gross return, net returns and B:C ratio. With regard to seed rate, growth parameters were maximum at 30 kg ha-1 (S4) seed rate during initial stages but at later stages, dry matter m-2 was highest under 25 kg ha-1 (S3). However, at all stages, both the seed rate treatments were at par with each other. Panicle weight and number of filled grains panicle-1 were significantly higher under seed rate of 15 kg ha-1 (S1), but still seed rate 25 kg ha-1 (S3) gave highest grain yield due to significantly higher number of effective tillers m-2under it. Straw yield was highest under highest seed rate of 30 kg ha-1 (S4). Seed rate 25 kg ha-1 was optimum for direct seeded hybrid rice as it gave highest gross return, net returns and B:C ratio.
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