BIOEFFICACY ASSESSMENT OF HERBICIDES MIXTURES FOR WEED MANAGEMENT IN KHARIF OKRA [Abelmoschus esculentus L. Moench]

R.K. MATHUKIA¹*, B.K. SAGARKA², P.R. MATHUKIA³, B.S. GOHIL⁴, D.M. PANARA^5
1Department of Agronomy, College of Agriculture, Junagadh Agricultural University, Junagadh, 362001, Gujarat, India
²Department of Agronomy, College of Agriculture, Junagadh Agricultural University, Junagadh, 362001, Gujarat, India
³Department of Agronomy, College of Agriculture, Junagadh Agricultural University, Junagadh, 362001, Gujarat, India
⁴Department of Agronomy, College of Agriculture, Junagadh Agricultural University, Junagadh, 362001, Gujarat, India
⁵Department of Agronomy, College of Agriculture, Junagadh Agricultural University, Junagadh, 362001, Gujarat, India
* Corresponding Author : rkmathukia@jau.in

Received : 08-03-2018     Accepted : 11-03-2018     Published : 15-03-2018
Volume : 10     Issue : 5       Pages : 5329 - 5331
Int J Agr Sci 10.5 (2018):5329-5331

Keywords : Okra, Abelmoschus esculentus, Weed, Herbicide, Pendimethalin, Oxyfluorfen, Imazethapyr, Quizalofop
Conflict of Interest : None declared
Acknowledgements/Funding : The authors acknowledge Junagadh Agricultural University, Junagadh, 362001, Gujarat, for providing funding for the experiment. We are also grateful to Director of Research and Head, Department of Agronomy, Junagadh Agricultural University, Junagadh, 362001, Gujarat, India for execution of the experiment. The help rendered by field staff of Department of Agronomy is highly appreciated
Author Contribution : R.K. Mathukia: PI of the project, design of the experiment and interpretation, drafting the article, critical revision of the article and final approval of the version to be published

A field experiment was conducted during kharif season of 2015 and 2016 at Junagadh (Gujarat, India) to study the integrated weed management in okra [Abelmoschus esculentus (L.) Moench]. Herbicides viz., pendimethalin, oxyfluorfen, pre-mix pendimethalin + imazethapyr and tank-mix pendimethalin + oxyfluorfen as pre-emergence (PE), while quizalofop, imazethapyr and tank-mix imazethapyr + quizalofop as post-emergence were tested in integration with hand weeding. The pooled results over two years revealed that uncontrolled weed growth resulted in to yield loss of 70.81%. The results further showed that HW at 15, 30 and 45 DAS, pendimethalin 900 g/ha as PE fb HW at 40 DAS, tank-mix pendimethalin 450 g/ha + oxyfluorfen 120 g/ha as PE fb HW at 40 DAS, and quizalofop 40 g/ha as POE at 20 DAS fb HW at 40 DAS were found effective in controlling weeds by registering lower weed count, dry weight of weeds and weed index (4.68, 7.87, 12.02 and 17.74%) along with higher weed control efficiency (94.66, 93.42, 84.22 and 79.21%). These treatments also improved growth and yield attributes viz., plant height, number of fruits per plant, fruit length, fruit girth and fruit weight per plant, and ultimately produced higher fruit yield of okra (81.06, 78.35, 74.82 and 69.95 q/ha) over the unweeded check (24.82 q/ha).

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