@shruti-rai
you can consider the following options for pursuing Agriculture in the USA.

Stanford University Cornell University New York University Dartmouth College

You can check the entire list of universities with their ranks here: https://ischoolconnect.com/en/explore-schools/?limit=10&page=1&sort_key=best_rank&country=USA&&disciplines=5fdad938f3ff5e91f82c8c09)

Read this article on How to Choose a University before you make your decision about which country to go for 😔

Ranks don't always depict how perfect a university is
Your choice depends on a lot of things - course, networking, opportunities, etc.
Plus, US offers a higher range of options to students
Whereas Singapore only has 4-6 well-known universities

There are a lot of factors involved-

Which university you get into Course curriculum If you'll get a practical learning experience Job opportunities

Use these points to make your decision

In the end, you can also apply to both countries, given that you like the uni you're applying to

You can check out these universities-
Harvard University
Stanford University
Johns Hopkins University
Massachusetts Institute of Technology
University of California, San Francisco
University of California, Los Angeles

6.5 overall and 6 in each individual band

Depends on a lot of factors-
Weather- Switzerland is colder
Language- The subject you choose might not be taught in English, but French (depends on the course and university you choose)
Cost- Switzerland is usually more expensive
And more