How can I work with the Thailand Government or a major university in agriculture, and what are my visa options?

Cannabis market will be dead here soon, wake up

A good pathway is to look at working with University. They are looking for people in this area. Mae Jo university in Chiang Mai is focused on agriculture

The actual company that wants you has to supply all the documentation to hire you in order for you to apply for the type B visa extension in order to work, and get the work permit. As far as universities go they will only hire you in that field if you have a PhD, and extensive experience. Something else to remember, when the government legalized hemp, and CBD first, they taught the farmers how to grow it, and supplied seedlings. There is a Thai hemp growers association. As far as starting your own consulting company you will need at least bt2million in registered capital, hire 4 Thai employees in order to get one work permit, and can only own 49%of your business, with Thai partners owning the rest. There are a few ways around this last part, but no way around the required minimum of bt2million in registered capital in order to get the required work permit. As a side note, any physical agriculture work is restricted to Thais only, so all you can do is consult, no matter who you work for. You can't even pick up a shovel and use it, or cut a plant down. There are a number of professional foreign growers here, so you do have extensive competition. I currently consult with growers, and extraction pros from Nepal, the US, and Iran. Now working on a contract to supply hemp utility clothing to the military, and CBD oil to the Spanish government. You do have lots of professional competition.

If you're in a country where the Thai embassy has switched to the evisa system, you cannot just go to the embassy. They no longer allow anyone but Thai citizens inside as all other visa matters are handled through the evisa system online.