TITLE:
Influence of Post Emergence Application of Glyphosate on Weed Control Efficiency and Yield of Transgenic Maize
AUTHORS:
Duraisamy Ravisankar, Chinnagoundar Chinnusamy, Purushothaman Muthukrishnan
KEYWORDS:
Glyphosate Tolerant Maize; Weed Control Efficiency; Yield
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.4 No.8,
July
30,
2013
ABSTRACT:
Field experiment
was conducted during kharif 2009 and rabi 2009-2010 at Tamil Nadu Agricultural
University, Coimbatore to evaluate the weed control efficiency and yield
potential of glyphosate resistant transgenic maize. Treatments consisted of two
transgenic maize hybrids named Hishell and 900 M gold with application of glyphosate as post emergence at 900, 1800 and 3600 g a.e/hathese were compared with non-transgenic
counterpart maize hybrids with application of atrazine as pre-emergence
at 0.5 kg/ha followed by one
hand weeding at 40 Days After Sowing along with need based insect control practices.
Post emergence application of glyphosate at 900, 1800 and 3600 g a.e/ha in transgenic maize hybrids was recorded with lower weed
density and higher weed control efficiency compared to other treatments. Higher grain yield
was recorded with post emergence application
of glyphosate at 1800 g a.e/ha in
transgenic hybrid 900 M Gold
and 3600 g a.e/ha in transgenic
hybrid Hishell during kharif 2009 and rabi 2009-2010 seasons, respectively.