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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(7): 301-310
DOI: https://doi.org/10.20546/ijcmas.2020.907.032


Efficacy of Pre and Post Emergence Herbicides against Weed Flora in Onion (Allium cepa L.)
Akanksha Thakare, S. U. Kakade*, J. P. Deshmukh, N. D. Parlawar and S. S. Thakare
All India Coordinated Research Project on Weed Management, Department of Agronomy, Dr.Panjabrao Deshmukh Krishi Vidyapeeth, Akola – 444104(M.S), India
*Corresponding author
Abstract:

A field investigation entitled efficacy of pre and post emergence herbicides against weed flora in onion (Allium cepa L.) was carried out at AICRP on weed management field of Agronomy Department, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during the Rabi season of 2018-19. The investigation was carried out to evaluate the efficacy of different pre and post emergence herbicides against weed flora, as well as to study the phytotoxic effect on the crop, yield of onion and to study the economics of different method of weed control in onion. The experiment was laid out in randomized block design with nine treatment replicated thrice. The treatment comprised of different pre-emergence, post-emergence herbicides in different doses and were compared with cultural method. The soil of experimental field was fairly uniform and leveled and characterized as clayey in texture, having slightly alkaline reaction with pH (7.7) low organic carbon status (0.41%), low nitrogen content (197.21 kg ha-1), medium available phosphorus (18.76 kg ha-1) and rich in available potassium (366.49 kg ha-1). Onion (Variety- Akola Safed) was transplanted on 14th December 2018 at 20×10 cm spacing with fertilizer dose of 100:50:50 NPK kg ha-1. The results revealed that among the various treatments under study weed free recorded significantly higher values of major parameters wheareas, in the herbicidal treatments, the maximum yield attributes were recorded with application of pendimethalin 24% + oxyfluorfen 4% ZE @600+102.5 g a.i./ha which was at par with treatment Oxyfluorfen 23.5% EC@ 200 g a.i./ha. Among the herbicidal treatment, reduction in weed population, weed dry matter, higher weed control efficiency (85.86%) and lowest weed index (4.29%) was found with pendimethalin 24% + oxyfluorfen 4% ZE @600+102.5 g a.i./ha and higher weed index in weedy check (54.33). Pendimethalin 24% + oxyfluorfen 4% ZE @600+102.5 g a.i./ha was found most economical with maximum value of GMR (188290 Rs ha-1) , NMR ( 126520 Rs ha-1) and B: C ratio (3.04). The net return per hectare was more under cultural practice i.e. two hand weeding at 25 and 45 DAT but the difference was not much when compared to effective pre emergence herbicide (Pendimethalin 24% + oxyfluorfen 4% ZE @600+102.5 g a.i./ha).


Keywords: Onion, Hand weeding, Weeds, Pendimethalin + Oxyfluorfen, Pre-emergence
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How to cite this article:

Akanksha Thakare, S. U. Kakade, J. P. Deshmukh, N. D. Parlawar and S. S. Thakare. 2020. Efficacy of Pre and Post Emergence Herbicides against Weed Flora in Onion (Allium cepa L.).Int.J.Curr.Microbiol.App.Sci. 9(7): 301-310. doi: https://doi.org/10.20546/ijcmas.2020.907.032