Realistically, what the farmer wants is irrelevant. A farmer who grows what a farmer wants is a farmer that is no longer in business. You need to have customers to stay in business, and so the customer always dictates what is grown. Customers don't buy product they don't want – why would they?
If the customer desires a slower-growing plant, the customer will get a slower-growing plant (assuming the tech companies are able to make the science work, but that's outside of the hands of farmers). Although knowing the average consumer, there is a good chance they would never accept a slower-growing plant as it may cause autism or some other story that they start to spread around.
If the customer desires a slower-growing plant, the customer will get a slower-growing plant (assuming the tech companies are able to make the science work, but that's outside of the hands of farmers). Although knowing the average consumer, there is a good chance they would never accept a slower-growing plant as it may cause autism or some other story that they start to spread around.