if you were a Japanese farmer in 1928 how would how you did your job be likely be different compared to if you were a farmer in 1828?

Well, from the time jump from 1828 to 1928, you'll have the Meiji Restoration, which introduced many changes.

Children were put into schools longer, which not only cut down on the hands around to help farm but the families had to pay for. However, you only start seeing high numbers of attendance (and lower illiteracy rates) by the early 1900s.

Also, before the 1870s the farmers paid land tax through rice but one of the Meiji Restoration changes brought about was paying taxes through currency for farmers. However, private ownership had been noted and in some cases recognized. Some families had tilled a plot of land for generations under a feudal lord and were given its deed. They could choose to sell it, buy more land and grow whatever crop they wanted. Before then the land was their local lord's and the crop was not determined by the farmer.

See Mikiso Hane's Peasants, Rebels, Women and Outcasts.

By 1928 as a Japanese farmer (or even an average Japanese citizen), you'll be facing a lot of government pressure, incentives and national pride, because there was a huge move to colonize Manchuria and Korea, particularly farmers. (Japan was needing more food than before because of the population increases, and Japan was running out of land.)

I would look at Kenneth Ruoff's Imperial Japan at its Zenith for more specifics on the general topic.

I swear there's a really good article on the propaganda for becoming a farmer in Manchuria that I found earlier this year, but I can't find it on my hard drive. However, I'm not sure that you're looking for the cultural aspects, so I tried to provide things related to the job.

To sum up:

Taxes are different. Don't pay with a percent of the crop but with currency earned through selling the crop.
Who owns the land changes.
More educated farmers; higher literacy rate.
If you are a Japanese farmer, you are more likely to move in the late 1920s and 30s to colonize and farm.

I'm sure techniques in farming changed as well, because in a hundred years, technology improved a lot in Japan. It is very likely that the most rural countrysides would be receiving more access to technology and its advancements. However, that's one thing I have not read up on or have any resources to point you to.