Scientists explore how to improve crop yields – on Mars

For future human bases or colonies on Mars to be self-sustaining, a reliable source of home-grown food will be a must. It simply would be too costly and risky to rely upon rocket deliveries to meet the food needs of colonists. With this in mind, scientists are exploring ways to optimize space farming. In a controlled greenhouse at Wageningen University & Research in the Netherlands, researchers have now identified a way that shows promise for improving crop yields in simulated Martian soil, with different crops grown together in a method called "intercropping" pioneered by ancient Maya farmers.