A way to grow more food on the same piece of land is for farmers to practice multiple cropping, defined as growing multiple crops sequentially, within a year. Multiple cropping can increase production and income and has additional benefits – increased crop diversity, improved functioning of agricultural systems, spare land for biodiversity or other uses and reduced use of inorganic fertiliser and pesticides.

A CSIRO study found that increasing multiple cropping in suitable areas could lead to up to 30% more global food production without additional agricultural land. Many low- and middle-income countries in Africa, South America, and Asia have potential for increasing multiple cropping which could support food supply and food security

https://research.csiro.au/foodglobalsecurity/multiple-cropping-could-help-feed-the-world/