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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 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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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.2018.7(5): 3655-3661
DOI: https://doi.org/10.20546/ijcmas.2018.705.421


Studies on Weed Dynamics, Yield and Economics of Short Duration Pigeonpea (Cajanus cajan (L) Millsp.) as Influenced by Date of Sowing and Weed Management Practices
N.R. Sandya* and R.S. Singh
Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
*Corresponding author
Abstract:

A field experiment was conducted during rainy season of 2015 and 2016 at the Research Farm, Institute of Agricultural Sciences, BHU, Varanasi in sandy clay loam soil to find out the influence of date of sowing (D1-11 June, D2-25 June and D3-9 July) and weed management practices (W1 - Weedy check, W2 - Pendimethalin @ 1.0 kg a.i. ha-1 (pre-emergence) fb one hand weeding at 25 DAS, W3- Pendimethalin @ 1.0 kg a.i. ha-1 fb Imazethapyr @ 100 g a.i. ha-1 (post-emergence), W4 - Pendimethalin @ 1.0 kg a.i. ha-1 fb Imazethapyr @ 100 g a.i. ha-1 fb one hand weeding at 50 DAS, W5 - Imazethapyr @ 100 g a.i. ha-1 fb one hand weeding at 50 DAS, W6- Two hand weedings at 25 and 50 DAS) in pigeonpea. Results revealed that density and biomass of weeds increased with delay in sowing time from 11 June to 9 July. Eventually, minimum weed loss of 13.42 % and 12.68 % was observed with D1-11 June. Among weed management practices, minimum values of number of weeds and their dry weight m-2 which was significantly lower than other weed management practices were recorded with two hand weeding at 25 and 50 DAS which is at par with Pendimethalin @ 1.0 kg a.i. ha-1 fb Imazethapyr @ 100 g a.i. ha-1 at 25 DAS fb one hand weeding at 50 DAS during both the years of experimentation. Minimum weed loss of 2.89 % and 2.41 % was observed with was recorded with W4. Yield, Gross returns and Net returns, B: C ratio of pigeonpea were superior when crop was sown on 11 June compared to delay in sowings during both the years. Among weed control treatments, two hand weeding at 25 and 50 DAS which is at par with Pendimethalin @ 1.0 kg a.i. ha-1 fb Imazethapyr @ 100 g a.i. ha-1 at 25 DAS fb one hand weeding at 50 DAS with respect to Yield, Gross returns and Net returns but higher B: C ratio was recorded with Pendimethalin @ 1.0 kg a.i. ha-1 fb Imazethapyr @ 100 g a.i. ha-1 at 25 DAS


Keywords: Pigeonpea, Date of sowing, Weed management, Yield, Economics, Net returns, B: C
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How to cite this article:

Sandya, N.R. and Singh, R.S. 2018. Studies on Weed Dynamics, Yield and Economics of Short Duration Pigeonpea (Cajanus cajan (L) Millsp.) as Influenced by Date of Sowing and Weed Management Practices.Int.J.Curr.Microbiol.App.Sci. 7(5): 3655-3661. doi: https://doi.org/10.20546/ijcmas.2018.705.421