SCOTT SINKLIER / AGSTOCKUSA / SCIENCE PHOTO LIBRARY SCOTT SINKLIER / AGSTOCKUSA / SCIENCE PHOTO LIBRARY
Farmer taking a soil sample from a soybean field (Glycine max). The sample has been taken with a borer to test for cyst nematode infection (Heterodera glycines) which can prove devastating to soybean crops. Photographed in central Iowa, USA.
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