You can get in touch with Horticulture Training Centre Talegaon - Dabhade,Pune. They have 5 days training secssion on the subject including Green House management for that they charged Rs. 5200/- (including stay,food & training fees) and also issue you a certificate for the course.
In fact i have done that course in Nov - 10 and fully satisfied with teaching faculties & training programme. you can visit their site