Soybean research. Plant physiologist preparing to place an optical scanner into a tube positioned in the soil to photograph soybean (Glycine max) roots. The photos will show changes in root growth caused by elevated carbon dioxide and ozone,which has been pumped into the open-top field chambers | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Greb, Peggy / US Department of Agriculture |
Taille de l’image : | 3667 px × 2445 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Restrictions : |
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