Poonia, who had already qualified for the London Olympics with a national record 64.74m throw at Hawaii earlier this month, would be up against the likes of 2008 Olympics gold winner Stephanie Brown Trafton of United States and silver medallist Barrios Yarelys of Cuba and Perkovic Sandra of Croatia who won the Shanghai leg of Diamond League Meet in 68.24m.
The other two Indian women taking part in the fourth leg of the 14-leg Diamond League Meet series are Asian Games gold medallist in 10,000m Preeja Sreedharan and silver medallist Kavita Raut.
Sreedharan and Raut are yet to attain Olympics qualification.
The duo, along with 3000m steeplechase Asian Games gold medallist Sudha Singh and O P Jaisha, were earlier training in Kenya before moving base to Brescia in Northern Italy to train under Claudio Berardelli, regarded as one of the best endurance-running coaches in the world.