Efficacy of multiple cropping 

Depending on the Planting Design, More Crop Diversity means more  Productivity - No Matter How You Estimate the Yields Debal Deb  13 January 2022 

https://www.cambridge.org/core/blog/2022/01/13/depending-on-the-planting-design-more-crop-diversity-means-more-productivity-no-matter-how-you-estimate-the-yields  Indigenous food production systems are always polycrop systems, growing diverse food and non-food crops on marginal lands, depending no external materials (e.g. agrochemicals, machinery, fossil fuel). Dozens of experimental studies proved the superior productive efficacy of multiple cropping systems, growing mostly 2 or 3 crops), over monocultures promoted by modern, industrial agriculture.