BIO-EFFICACY OF POST-EMERGENCE HERBICIDE TOPRAMEZONE AGAINST WEED CONTROL OF MAIZE (Zea mays L.)

D.K. TIWARI¹*, V.K. PARADKAR², RAJIV DUBEY³, R.K. DWIVEDI^4
1Krishi Vigyan Kendra, Badwani, 451551, Rajmata VijayarajeScindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh
²Zonal Agricultural Research Stations, Chhindwara, 480001, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Adhartal, Jabalpur, 482004, Madhya Pradesh
³Collage of Horticulture, Mandsour, 458001,Rajmata VijayarajeScindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh
⁴Krishi Vigyan Kendra, Damoh, 470661, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Adhartal, Jabalpur, 482004, Madhya Pradesh
* Corresponding Author : tiwaridkt78@rediffmail.com

Received : 20-01-2018     Accepted : 28-01-2018     Published : 30-01-2018
Volume : 10     Issue : 2       Pages : 5079 - 5081
Int J Agr Sci 10.2 (2018):5079-5081

Keywords : Weed-flora, Weed density, Post-emergence, Maize, Yield
Academic Editor : Dr Rajeev Bharat, P. T. Patel
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are highly thankful to the BASF for providing facilities and help to conduct study. Authors are thankful to Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh and Jawaharlal Nehru Krishi Vishwa Vidyalaya, Adhartal, Jabalpur, 482004, Madhya Pradesh.
Author Contribution : All author equally contributed

The field experiments were carried out during Kharif season of 2009 and 2010 at experimental farm, Zonal Agricultural Research Station, Chandangaon, Chhindwara (Madhya Pradesh) under rainfed conditions. The soil of the experimental field was clay loam. The predominant weed-flora of experimental field were Echinochloa colona (L.) link, Echinochloa crusgalli, Digetaria adsendence, Dinebra Arabica, Elusineindi cagaretn., Sateriagluaca, Cynodondectylon among grasses, Ageratum conyzoides (L.), Commelina benghalensis (L.), Euphorbia geniculata forsk, Euphorbiahirta, Aclyphaindica, Amarenthus viridis, Commelina communis, Corcorus spp., Phylenthus niruri among broad leaf weeds and Cyperusrotundus L. among sedges. The results revealed that dry weight of weeds (g) was significantly superior over all the treatments as compare to weedy check in both years of the investigation. Higher weed dry weight was recorded under weedy check. All the topramezone treatments were found superior over weedy check. Number of cob/plant were non significant in all treatments over weedy check. Cob length (cm) and cob girth (cm) over weedy check were significantly superior. All the weed control measures resulted in significantly higher grain yield than weedy check. Post emergence herbicide topramezone 20.1 & 25.2 g a.i./ha produce higher yield than lowest dose 13.4 g a.i./ha. Same trend was observed in topramezone with adjuvant.

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