Some valid reasons for not expanding farmland to currently uncultivated regions include:
- Uncultivated land is already playing a crucial ecological role in another way, Like Land that is not suitable for cultivation is either barren and desolate land or is land used for non-agricultural purposes like factories, roads, buildings, etc.
- A lot of uncultivated lands are in areas that are too cold or too steep. Plants grow best when the daytime temperature is about 10 to 15 degrees higher than the nighttime temperature. Under these conditions, plants photosynthesize (build up) and respire (break down) during optimum daytime temperatures and then curtail respiration at night.
- It costs a lot to fertilize tropical soils, which are infertile.
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