Email replies to responses to unsat.
I have attached the responses I received to my enquiry on problems with soil solution sampling devices. Thanks to all of you who replied. We are evaluating applicability, ease of use, and errors associated with use of these devices to sample soil moisture to evaluate nitrate movement beyond crop root zone under irrigation conditions. I would think that one of the potential sources of error is irrigation water flowing in the boring advanced to install the sampling device at the required depth. This short-circuiting would cause water near the bottom of the hole, next to the suction cup, to have a different water quality than the soil moisture in the field.