If you are gardening on the area already you must have some idea of yield of your land. If your current garden is already producing why do you need to add topsoil? You can grow in sandy loam you just might need to water more, or mulch so that you keep the moisture in the ground. How big of a garden do you already have? not only in size but what did you grow and how many of each? If the area that you want to expand into is in pasture that has been resting for years the soil could have recovered enough for you to start planting on it.
Personally, I would never bring a tractor into my garden, I do not want it compacting the soil. Your best bet there would be to use a tiller if possible. I know someone else said a pickup is more important that a tractor and I totally agree. On our farm we run a 20 family CSA (community supported agriculture) out of about 20 raised 4' x 75' beds. I would say to expand your garden slowly since you are increasing the work load exponentially. Weeding one bed in august is easy, weeding 5 beds is something altogether different. The same with watering, planting, harvesting etc.
Are you in the northern, middle or southern part of the state? They are much different growing areas and your planning needs are different for each area.
Personally, I would never bring a tractor into my garden, I do not want it compacting the soil. Your best bet there would be to use a tiller if possible. I know someone else said a pickup is more important that a tractor and I totally agree. On our farm we run a 20 family CSA (community supported agriculture) out of about 20 raised 4' x 75' beds. I would say to expand your garden slowly since you are increasing the work load exponentially. Weeding one bed in august is easy, weeding 5 beds is something altogether different. The same with watering, planting, harvesting etc.
Are you in the northern, middle or southern part of the state? They are much different growing areas and your planning needs are different for each area.