Domannek, CZECH REPUBLIC, JULY 28, 2015: Scientist soil measurement probe research pH, temperature, nitrogen, carbon, moisture, water depth, Japanese fast-growing poplar Populus, Europe

Editorial Use Only: This image can only be used for editorial purpose. Use of this image in advertising, commercial or for promotional purposes is prohibited unless additional clearances are secured by the licensee. 123RF.com does not provide any clearance services.