Many kids at my school work on farms or some other form of agriculture. Although adults could do it easily with new technology, it may still effect it to some extent. I think the main problem would be the kids not being as involved in agriculture, there for affecting the number of new farmers.
When 9- month school started, more people farmed, it created the need for children to be able to help on farms. Nowadays not many people farm so children just sit around all summer and do, academically nothing. If there are farmers there are machines that were made to help farmers, so they are not as heavily dependent on their offspring.