EFFECT OF DIFFERENT WET SEEDING METHODS AND WEED MANAGEMENT PRACTICES ON GRAIN YIELD OF UNPUDDLED RICE (Oryza sativa L.) IN TAMIRABARANI COMMAND AREA

P. KISHORE KUMAR¹*, M. HEMALATHA², N. SENTHIL KUMAR³, B. JEBERLIN PRABINA⁴, M. JOSEPH^5
1Department of Agronomy, Agricultural College and Research Institute, Killikulam, 628252, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
²Department of Agronomy, Agricultural College and Research Institute, Killikulam, 628252, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
³Department of Agronomy, Agricultural College and Research Institute, Killikulam, 628252, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
⁴Department of Soil Science and Agricultural chemistry, Agricultural College and Research Institute, Killikulam, 628252, India
⁵Department of Farm Management, Agricultural College and Research Institute, Killikulam, 628252, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu
* Corresponding Author : pkishorekumar95@gmail.com

Received : 02-07-2018     Accepted : 11-07-2018     Published : 15-07-2018
Volume : 10     Issue : 13       Pages : 6564 - 6567
Int J Agr Sci 10.13 (2018):6564-6567

Keywords : Weed management, Drum seeder, Paddy cum dhaincha seeder, Wet-seeded rice
Academic Editor : Dr A L Narayanan
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to financial support by Agricultural College and Research Institute, Killikulam, 628252, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
Author Contribution : All author equally contributed

Field experiment was conducted at Agricultural College and Research Institute, Killikulam (TNAU) during Late Pishanam (November 2017 – March 2018) to study the various wet seeding methods and weed management practices on grain yield of unpuddled rice in Tamirabarani command area. The experiment was laid out in randomized block design and replicated thrice with fourteen treatments. Treatments involving seven weed management practices were tested with two methods of wet seeding in rice by drum seeder and paddy cum dhaincha seeder. All the weed control treatments with seeding methods significantly reduced the density and dry weight of weeds which resulted in significantly higher growth and yield of rice over unweeded control. Though the weed free check yielded significantly higher than other treatments, but it fetched higher cost of cultivation and non-availability of labourers during peak season which resulted in poor benefit cost ratio. The results revealed that among the treatments, rice established through drum seeder along with the pre emergence application of pyrazosulfuron ethyl at 20 g a.i ha-1 on 8 DAS followed by POE bispyribac sodium at 25 g a.i ha-1 at 30 DAS not only significantly reduced density and dry weight of weeds but also increased the grain yield of rice and benefit cost ratio.

1. Aslam M., Qureshi A.S. and Horinkova V. M. (2002) J. Drain. Water Manage, 6(1), 25-36.
2. Bhattarai R., Gautam D., Ranjit J. and Chauhan B. (2016) Agronomy Journal of Nepal, 4, 121-127.
3. Boutin C., Lee H.B., Peart E.T., Batchelor P.S. and Maguire R.J. (2000) Environmental toxicology and chemistry, 19(10), 2532-2541.
4. Brown H. M. (1990) Pest Management Science, 29(3), 263-281.
5. Chauhan B. S. (2012) Weed Technology, 26(1), 1-13.
6. Coping with water scarcity: A strategic issue and priority for system-wide action (2006) United Nations - Water.
7. Hassan D., Upasani R., Thakur R., Singh M., and Puran A. (2010) Indian J. Weed Science, 42(1), 67-69.
8. Indiastat (2016) http://indiastat.org
9. IRRI. (2007) http://ricestat.irri.org
10. Khaliq A., Matloob A., Ihsan M. Z., Abbas R. N., Aslam Z. and Rasool F. (2013) Int. J. Agric. Biol, 15, 191-199.
11. Kumar A., Vivek R., Kumar R., Ghasal P., Chaudhary K., Singh V., and Kumar S. (2017) Journal of Pharmacognosy and Phytochemistry, 6(4), 1550-1556.
12. Kumar M and Sharma G. (2005) Indian J. Weed Sci. 37(3&4), 197-20.
13. Prameela P., Menon S. S., and Menon M. V. (2014) Journal of Tropical Agriculture, 52(1), 94-100.
14. Raj S. K., Mathew R., Jose N. and Leenakumary S. (2013) Madras Agricultural Journal, 100.
15. Ravisankar N., Chandrasekaran B., Raja R., Din M., and Chaudhuri S. G. (2008) Indian Journal of Agronomy, 53(1), 57-61.
16. Sanusan S., Polthanee A., Audebert A., Seripong S., and Mouret J.C. (2010) Crop protection, 29(9), 927-935.
17. Singh S., Ladha J., Gupta R., Bhushan L., Rao A., Sivaprasad B. and Singh P. (2007) Crop Protection, 26(4), 518-524.
18. Singh V., Jat M.L., Ganie Z.A., Chauhan B.S. and Gupta R.K. (2016) Crop Protection, 81, 168-176.