EVALUATION OF EFFICIENT WEED MANAGEMENT PRACTICES ON GROWTH AND YIELD OF GROUNDNUT

S. SANBAGAVALLI¹*, C. CHINNUSAM², S. THIRUVARASSAN³, S. MARIMUTHU^4
1Department of Pulses, Tamil Nadu Agricultural University, Coimbatore, 641003, India
²Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore, 641003, India
³Sugarcane Research Station, Cuddalore
⁴Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore, 641003, India
* Corresponding Author : sanbagavallitnau@gmail.com

Received : 23-11-2016     Accepted : 02-12-2016     Published : 06-12-2016
Volume : 8     Issue : 59       Pages : 3310 - 3313
Int J Agr Sci 8.59 (2016):3310-3313

Keywords : Oxyfluorfen, Pendimethalin, Hand Weeding, Yield, Groundnut
Conflict of Interest : None declared
Acknowledgements/Funding : We thank Tamil Nadu Agricultural University, Coimbatore for providing financial support and technical advice for conducting the research effectively
Author Contribution : None declared

A field experiment was conducted at Agricultural Research Station, Tamil Nadu Agricultural University, Pattukottai during rabi season of 2010-11 to evaluate the weed management practices on growth and yield of groundnut. The results of this study showed that especially pre emergence herbicide as oxyfluorfen @ 250 g/ha at 3 DAS + hand weeding at 40 DAS registered lower weed density (30.5/m2), weed dry weight (38.2 g/m2) and higher weed control efficiency (93.2 per cent). All the growth and yield parameters were significantly improved with application of oxyfluorfen @ 250 g/ha at 3 DAS + hand weeding at 40 DAS and it was closely followed by application of pendimethalin @ 750g/ha at 3 DAS along with hand weeding at 40 DAS was provided a weed free situation by timely control of weeds during the critical period of crop weed competition. However, higher net return ( 21760/ha) and benefit cost ratio (1.90) was obtained in pre emergence application of oxyfluorfen @ 250 g/ha at 3 DAS along with hand weeding at 40 DAS. Based on the results, it can be concluded that pre emergence herbicide as oxyfluorfen or pendimethalin along with one hand weeding at 40 DAS enhance the weed free situation, which was led to improving the growth and yield of groundnut.