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ARS Home Office of Communications Images Photos Jan97





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At a test site plant geneticist JoAnn Lamb and soil scientist Michael Russelle evaluate alfalfa for root growth. Image Number K7532-1 At a St. Paul, Minnesota, test site, plant geneticist JoAnn Lamb (kneeling) and soil scientist Michael Russelle evaluate alfalfa for root growth. Plants with the quickest growing roots turn yellow first when their roots reach a specially treated layer of subsoil.  Photo by Bruce Fritz  640 pixels wide: (k7532-1.jpg)   Please visit our Image Gallery


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