Stage specific and component centric nematode IPM in tuberose (Polianthes tuberosa L.)

Field experiments were conducted at Regional Research Station farm, Paiyur, India during 2012–2014 in tuberose Polianthes tuberosa L.under normal flow irrigated conditions to standardize the effective management practices for nematode disease complex for the North Western Zone of Tamil Nadu. Two year experimentation results revealed that dipping of mother bulbs in carbosulfan 1000 PPM followed bysoil application of Pf @2.5 Kg/ha mixed with 50 Kg of FYM every third month recorded a highest yield of tuberose florets of 2669.88 Kg/ha in the first year and 1605.87 Kg/ha in the combined year with a significant reduction in injury causing nematode population of 315.67 and 321.33/250 g of soil sample respectively at 60 and 120 days with a highest benefit cost ratio of BC ratio of 1:16.0 and found to be the best. The aforesaid treatment is also comparable with standard chemical check viz., dipping mother bulbs in carbosulfan 1000ppm + soil application of Carbofuran 3G @1 K.g a.i/ha + drenching with carbendazim@2 g/lit., in terms of yield recording 1960.65 and 1219.17 Kg/ha in the first year and in the combined year with a significant reduction in nematode load of 297.5 and 316.30/250 g of soil sample at 60 and 120 days respectively.