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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39 For more details click here
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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(10): 1128-1135
DOI: https://doi.org/10.20546/ijcmas.2020.910.135


Effect of Sequential Application of Herbicides on Weed Density, Weed Dry Weight and Yield of Irrigated Maize
R.Arockia Infant Paul1*, G. Srinivasan2, A. Veeramani1 and R. Thamizh Vendan3
1Department of Agronomy,
3Department of Agricultural Microbiology, Agricultural College and Research Institute, Madurai, India
2Regional Research Station, Aruppukottai, India
*Corresponding author
Abstract:

A field experiment was conducted to evaluate the effect of sequential application of herbicides on weed density, weed dry weight and yield of irrigated maize during kharif season, 2019-2020 at Agricultural College and Research Institute, Madurai, Tamil Nadu. In maize field, lesser number of weeds m-2 and weed dry weight m-2were observed in weed free check and was followed by pre emergence application of atrazine at0.25 kg a.i ha-1at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T3).The highest maize grain yield was obtained in weed free check (T7) which was statistically on par with treatment pre emergence atrazine 0.25 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T3), pre emergence pendimethalin 1 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T4), pre emergence atrazine 0.25 kg ha-1 followed by post emergence halosulfuron methyl 90 g ha-1 (T5) and pre emergence pendimethalin 1 kg ha-1 followed bypost emergence halosulfuron methyl 90 g ha-1 (T6). During the experimentation highest B: C ratio was obtained in atrazine at 0.25 kg a.i ha-1 at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T3) and was followed by preemergence application of pendimethalin at1 kg ha-1 followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T4).


Keywords: Weed density, Weed dry weight, Halosulfuron methyl, Pre emergence, Post emergence and Tembotrione
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How to cite this article:

Arockia Infant Paul, R., G. Srinivasan, A. Veeramani and Thamizh Vendan, R. 2020. Effect of Sequential Application of Herbicides on Weed Density, Weed Dry Weight and Yield of Irrigated Maize.Int.J.Curr.Microbiol.App.Sci. 9(10): 1128-1135. doi: https://doi.org/10.20546/ijcmas.2020.910.135