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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 2
First page : (1700) Last page : (1704)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7547

Studies on Weed Seed Bank in Soil As Affected by Different Weed Management Practices in Spring Sweet Corn

S. Krishnaprabu*
Assistant Professor, Department of Agronomy, Faculty of Agriculture,
Annamalai University, Annamalainagar 608 002
*Corresponding Author E-mail: prabu1977krishna@gmail.com
Received: 13.03.2018  |  Revised: 17.03.2018   |  Accepted: 22.04.2018  

 ABSTRACT

A field study was conducted in summer season of 2016 and 2017 on sweet corn to evaluate the effect of different weed management practices upon the weed seed bank dynamics in the soil. In the sample from seed bank studied, the per cent contribution of Cleome viscosa was highest among all the weed species before sowing and harvest stage of the crop and was followed by Dactyloctenium aegypticum, in both the stages and years. Depth wise weed seed distribution indicated highest weed seed in 10-15 cm depth before sowing and in 0-5 cm depth at harvest stage of the crop. Effect of all the weed control treatments upon previous season’s dormant seeds was non-significant. Twice hand weeding was effective to reduce seed bank in deeper layer. Atrazine 1000 g/ha followed by tembotrione 120 g/ha and tembotrione alone 120 g/ha had caused a significant reduction in weed seed number in 0-5 and 0-10 cm layer but weed seed number at 10-15 cm layer remained unchanged.

Key words: Atrazine, Sweet corn, Tembotrion, Weed seed bank, Hand weeding, Weed persistence.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Krishnaprabu, S., Studies on Weed Seed Bank in Soil as Affected by Different Weed Management Practices in Spring Sweet Corn, Int. J. Pure App. Biosci. 6(2): 1700-1704 (2018). doi: http://dx.doi.org/10.18782/2320-7051.7547