New Formulation of Oxyfluorfen on Weed Control  of Groundnut and its Residual Effect on Succeeding  Crops

Sathya Priya Ramalingam; Manickasundaram Perumal; Chinnusamy Chinnagounder

Volume : III, Issue : VI, June - 2013

New Formulation of Oxyfluorfen on Weed Control of Groundnut and its Residual Effect on Succeeding Crops

Sathya Priya Ramalingam, Manickasundaram Perumal, Chinnusamy Chinnagounder

Abstract :

A field investigation was carried out at the Agricultural Research Station, Bhavanisagar of Tamil Nadu Agricultural University, during kharif season of 2009 and 2010 to evaluate the new formulation of oxyfluorfen (23.5% EC) on weed control in groundnut and their residual effect on succeeding crops. Based on two years field experimentation, it was found that pre–emergence application of oxyfluorfen (23.5% EC) at 400 g ha–1 gave significantly lower total weed density and higher weed control efficiency at all the intervals. Application of new formulation of oxyfluorfen (23.5% EC) at 250 g ha–1 as pre–emergence herbicide can keep the weed density and dry weight below the economic threshold level and increased the yield attributes and pod yield significantly over unweeded control. Succeeding crops like sunflower and pearl millet sown immediately after the harvest of groundnut was not affected by the residue of new formulation of oxyfluorfen at all different doses tested in the experiment.