title: [Performance characteristics of root zone moisture and water potential sensors for greenhouses in the conditions of extended space flight].
abstract: The investigation was performed using greenhouse Lada in the Russian segment of the International space station (ISS RS) as part of space experiment Plants-2 during ISS missions 5 through to 22. A set of 6 point moisture sensors embedded in the root zone (turface particles of 1-2 mm in diam.) and 4 tensiometers inside root modules (RM) were used to monitor moisture content and water potential in the root zone. The purpose was to verify functionality and to test performance of the sensors in the spacefight environment. It was shown that with the average RZ moisture content of 80% the measurement error of the sensors do not exceed ± 1.5%. Dynamic analysis of the tensiometers measurements attests that error in water potential measurements does not exceed ± 111 Pa.
authors.forename: I G
authors.initials: IG
authors.lastname: Podolskiy
authors.forename: O M
authors.initials: OM
authors.lastname: Strugov
authors.forename: G E
authors.initials: GE
authors.lastname: Bingham
mesh_terms: D015374:Biosensing Techniques; D006801:Humans; D018517:Plant Roots / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D013026:Space Flight; D014867:Water / Q000737:chemistry / Q000378:metabolism*
chemical_list: D012987:Soil; D014867:Water