Effective weed management practices to control complex weed flora in different cultivars of hybrid and high yielding varieties of rice (Oryza sativa L.)

Paramita Biswas; Ratikanta Ghosh

doi:10.52756/ijerr.2016.v2.004

Authors

Paramita Biswas Regional Research Sub Station (OAZ), Uttar Banga Krishi Viswavidyalaya, Mathurapur, Malda-732 202, West Bengal, India
Ratikanta Ghosh Department of Agronomy, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia - 741 252, West Bengal, India

DOI:

https://doi.org/10.52756/ijerr.2016.v2.004

Keywords:

Environment, high yielding varieties, hybrid rice, pretilachlor, weed flora

Abstract

A field experiment was conducted during Summer and Kharif seasons of 2007-08 and 2008-09 at Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal, India to study the effect of hand weeding and Pretilachlor 50 EC @ 500 g a.i. ha^-1 as pre-emergence on weed management of different varieties of hybrid and high yielding rice. The experiment was laid out in a split-plot design with three replications for both the years. It has been observed that Pretilachlor 50 EC @ 500 g a.i. ha^-1has a significant effect to control complex weed flora both in hybrid and high yielding varieties of rice but hand weeding twice gave the better result as expected. Among the varieties, the hybrid varieties recorded 36% and 32% more grain yield in Summer and Kharif seasons respectively than high yielding varieties (HYV). The high yielding variety 6444 (V2) showed more grain yield during Summer and Kharif seasons than that of the hybrid 6129 (V1), 97158 (V6), and 96110 (V3), respectively. Regarding weed management, hand weeding twice recorded (13% & 36%) higher grain yield during Summer than that of the chemical treatment and unweeded check, and (20% & 42%) during Kharif seasons respectively. Among the interaction, hand weeding combined with all varieties of hybrid rice recorded higher yield in comparison to other treatment combinations.

References

Agricultural Statistics at a Glance. (2015). Government of India, Ministry of Agriculture and Farmers Welfare, Department of Agriculture Cooperation and Farmers Welfare, Directorate of Economics and Statistics.

Badawi, A. T. (2004). Rice-based production systems for food security and poverty alleviation in the near East and North Africa: New Challenges and Technological Opportunities, FAO Rice Conference, Rome, Italy. Pp. 17-25.

Balasubramanian, P. and Palaniappan, S. P. (2001). Principles and Practices of Agronomy Agrobios Publishing co. Pvt. Ltd, New Delhi. Pp. 306- 364.

Ghosh, R. K., Mallick, S. and Bera, S. (2013). Efficacy of bispyribac sodium 10% SC against weed complex under different rice ecosystem. Pestology. 37(9): 47–53.

Gomez, K. A. and Gomez, A. A. (1984). Statistical procedures for agricultural research. Second Edition. An International Rice Research Institute Book. A Wiley-Inter-science Publication, John Wiley & Sons, New York.

Horrigan, L., Lawrence, R. S. and Walker, P. (2002). How sustainable agriculture can address the environmental and human health harms of industrial agriculture. Environmental Health Perspective. 110(5): 445–456.

Rai, M. (2006). Rice the cereal that feeds billions. Indian Farming. 56 (7): 4-9.