Akash Sahoo1, Triptesh Mondal1*, Rajul Soni2, Ashirbachan Mahapatra1, Tufleuddin Biswas3, Magatapalli Sireesha4 and Jince Mary M. Joy5
1Department of Agronomy and Agroforestry, M.S. Swaminathan School of Agriculture, Centurion University of Technology and Management, Paralakhemundi-761 211 (Odisha), India
2Faculty of Agriculture, Medicaps University, Rau, Indore-453 331 (Madhya Pradesh), India
3Symbiosis Statistical Institute, Symbiosis International (Deemed University), Pune-411 004, India
4M.S. Swaminathan School of Agriculture, Centurion University of Technology and Management, Paralakhemundi-761 211 (Odisha), India
5OFR Centre, ORARS, Kerala Agricultural University, Kayamkulam-690 502 (Kerala), India
*(e-mail: mtriptesh@gmail.com; Mobile: 90644 10107)
(Received: September 03, 2024; Accepted: November 29, 2024)
ABSTRACT
An experiment was conducted to reveal the effect of sowing dates on rice varieties under wet seeded condition during Kharif at Post Graduate Research Farm, MSSSoA, CUTM. The experiment was designed in split plot design with three replications. Three sowing dates (11th July, 21st July and 31st July) and three rice varieties (Swarna, Naveen and RNR 15048) were taken as mainplot and subplot treatments, respectively. As per the results, 11th July sown crop performed significantly superior in terms of almost all the growth attributes such as tiller density at 90 DAS (238.11 m-2), LAI at 90 DAS (3.10) and DMA at harvest (1123.53 g m-2), yield attributes such as no. of panicles m-2 (216.78), no. of filled grains panicle-1 (115.33) and grain yield (4.67 t ha-1) as compared to other sowing dates. The grain yield of rice varieties was reduced @50.22 kg ha-1 day-1 due to the delayed sowing from 11th July – 21st July and @45.61 kg ha-1 day-1 till the end of July. In the other hand, the rice variety, Naveen provided significantly higher results of almost all growth attributes such as plant height at harvest (104.0 cm), yield attributes and grain yield (4.71 t ha-1). GDD, PTU and HTU showed significant positive correlation with grain yield at 50% flowering to harvest for the variety, Swarna and RNR 15048 whereas, significant negative correlation was obtained at sowing to PI for the variety, Naveen. In conclusion, the rice variety, Naveen sown on 11th July performed superior in respect to growth and yield attributes and yield with optimum duration of phenophases and provided higher economic returns.
Key words : Growth, rice, sowing dates, variety, yield