If tobacco can only get three seasons on a plot of land, what alternative would you propose other than use other land.

A good alternative would be to Crop rotation.

Explanation:

Crop rotation is the technique that allows several agricultural crops to be planted in the same area, respecting the planting period between one crop and another. This allows the same area to remain prospective, promote soil conservation and guarantee income to the farmer without needing another land to be used. Thus, after the tobacco plantation, the farmer could plant another agricultural crop, preferably a leguminous crop to promote the nitrogenization of the soil.