Hey!

Don't worry, you can start again as there is no age limit to pursue Diploma in Agriculture engineering. You must have atleast 50% in 10th standard to join the diploma. You can visit here for more details:

https://www.careers360.com/courses/agricultural-engineering-course

And there are many colleges which offer diploma in agriculture such as:

• OPJS university
• Swami vivekanad university
• MG polytechnic, Hathras
• Sanskriti University, mathura
• Azad polytechnic college, Lucknow

To know more, visit here:

https://engineering.careers360.com/colleges/list-of-diploma-in-agricultural-engineering-colleges-in-india

Thankyou