Not trying to hate here but this product is better in the offline world, such use case don't need to exists on the blockchain, there many projects that introduced something like you have here and after raising some funds they just disappear or dumped their tokens, you don't need to create any tokens for this
I think I have not heard any project related to agriculture, soil and many that succeeding, so you are right. Many of such projects have not succeeded, either because they didn't realize enough money which is also because investors don't believe in the reality of it and would not invest. Most of the project are exit scam.
Yes because crypto is not yet introduced in agricultural field because that field is far more better if the government or LGU will provide their resources. Besides, I don't see any projects related to this and if there is, I don't know what is the status of those project.