1Tamil Nadu Rice Research Institute, Tamil Nadu Agricultural University, Thanjavur - 612 101, Tamil Nadu, India
2Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore - 641 003, Tamil Nadu, India
3National Pulses Research Centre, Tamil Nadu Agricultural University, Pudukkottai - 622 303, Tamil Nadu, India
4Tapioca and Castor Research Station, Tamil Nadu Agricultural University, Salem - 636 119, Tamil Nadu, India
5Regional Research Station, Tamil Nadu Agricultural University, Cuddalore - 606 101, Tamil Nadu, India
*Corresponding author Email: mathitnau97@gmail.com
Online Published on 25 December, 2025.
Downy mildew, the most important disease of grapevine was caused by Plasmopara viticola. In the present study the management of the disease was studied using a fungicide molecule Pyraclostrobin 12.8% + Boscalid 25.2% WG. The experiment was laid out with Randomized Block Design with 8 treatments and one control. Spraying of Pristine 38% WG at 600 g ha-1 was found significantly superior in managing downy mildew disease of grapevine with least disease severity on leaves, inflorescence and berries coupled with highest fruit yield as against untreated control which registered the highest disease severity coupled with lowest fruit yield.
Grapevine, Pyraclostrobin 12.8% + Boscalid 25.2% WG, Downy mildew, Grapes