Jeeluga pachirotta farming

I am growing for green manure purposes, it started flowering, but height recorded only 8 inches after 40 days
Can I know natural growth height of Jeeluga? I am suspecting if I got stunted growth in my farm

Location; Pulakurthi Vill, ATP District AP State

Also please advise the right time to use rotavator

Regards,
Bala
7406363789