Lysimeter is a measuring device which can be used to measure the amount of actual evapotranspiration which is released by plants (usually crops or trees).

Ingram, H., A. Coupar, and O. Bragg. (12/2001AD) 2001. “Theory And Practice Of Hydrostatic Lysimeters For Direct Measurement Of Net Seepage In A Patterned Mire In North Scotland”. Hydrology And Earth System Sciences 5: 693-709. doi:10.5194/hess-5-693-2001.