Performance evaluation of different growth regulators on propagation of Chinese juniper (Juniperus chinensis Var. pyramidalis) in subtropical zone

Abstract

The present investigation was carried out to study the effect of different growth regulators on propagation of Chinese juniper (Juniperus chinensis Var.Pyramidalis) in subtropical zone of West Bengal under natural ventilated polyhouse at Mondari farm of Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, during 2014-15 and 2015-16. All parameters were significantly varied among the treatments during investigation (IAA @1000ppm, IAA@2000ppm, IAA @3000ppm, IBA @1000ppm, IBA @2000ppm, IBA @3000ppm, NAA @1000ppm, NAA @2000ppm, NAA @3000ppm and Control). After studying of two consecutive years, it has been found that tip cutting of this plant treated with NAA (2000-300ppm) followed by IBA at 3000 ppm in the month of July is found better for propagation towards of its multiplication in subtropical zone.