Performance of Post-Emergence Herbicide Combinations on Weed Management and Crop Yield in Direct Seeded Rice (Oryza sativa L.)
Nilutpal Saikia
Division of Agronomy, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India and Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University Varanasi, 221005, Uttar Pradesh, India.
Manoj Kumar Singh *
Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University Varanasi, 221005, Uttar Pradesh, India.
Aakash *
Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University Varanasi, 221005, Uttar Pradesh, India and Department of Agronomy, R.S.M. (P.G.) College, Dhampur (Bijnor), 246761, Uttar Pradesh, India.
Dendukuri Udaya Lakshmi
Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University Varanasi, 221005, Uttar Pradesh, India.
Kadagonda Nithinkumar
Division of Agronomy, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India and Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University Varanasi, 221005, Uttar Pradesh, India.
Shreyas Bagrecha
Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University Varanasi, 221005, Uttar Pradesh, India and Agronomy Section, ICAR-National Dairy Research Institute, Karnal, 132001, India.
Niraj Biswakarma
Divison of Agronomy, ICAR-Research Complex for North Eastern Hill Region, Umiam, 793103, India.
Kanika Bhatt
Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University Varanasi, 221005, Uttar Pradesh, India.
Sk. Asraful Ali
Division of Agronomy, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
Vikash Kumar
Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University Varanasi, 221005, Uttar Pradesh, India.
*Author to whom correspondence should be addressed.
Abstract
Direct-seeded rice (DSR), an innovative alternative to traditional transplanting, has gained popularity for its cost-effectiveness and labour-saving attributes. Weeds pose a significant threat to DSR. In this study, the effectiveness of various weed management methods, including hand weeding and herbicide applications, was evaluated. Hand weeding proved most effective in controlling weeds, while specific herbicides, such as bispyribac sodium + pyrazosulfuron (T2) and triafamone + ethoxysulfuron (T6) applied at 16 days after sowing (DAS), demonstrated superior weed control efficiency, improved growth parameters, and enhanced yield. Paspalum distichum was effectively controlled by penoxsulam + cyhalofop-butyl (T7). The study emphasizes the importance of customizing weed control to local conditions, with the choice of suitable herbicides and practices aligning with prevalent weed biotypes in the specific farming system. Understanding the nuanced impacts of post-emergence herbicides is crucial in navigating the intricate landscape of weed management in direct-seeded rice.
Keywords: Hand weeding, bispyribac sodium pyrazosulfuron, triafamone ethoxysulfuron, weed control efficiency