Emerging methods for plant phenotyping involve optical sensors — from simple RGB image sensors to NIR and Raman spectroscopy.SETH C. MURRAY, TEXAS A&M UNIVERSITYAgricultural production, already incredibly efficient in much of the developed world, is increasing each year — this is a necessity to feed the 9+ billion people expected on the planet by 2050. A great example of productivity gains is in corn (i.e., maize, Zea mays). One of the most productive crops, corn’s yield has increased sevenfold over the last 100 years in the U.S., meaning that seven times less land is needed to feed the same number of people1. 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