title: [The effectiveness of using biohumus for growing plants under autonomous conditions].
abstract: There has been investigated the possibility of prolonging the useful time of the substrate on the basis of natural salt-loaded zeolite "Balkanin" used in space greenhouses to grow plants through introduction of an organic addition, i.e. biohumus, instead of regeneration. Biohumus has been applied into the substrate in amounts of 5.0-15.0 wt%. There has been grown tropical perennial plant Basella rubra L. used for food as a salad. It is found that the periodic introduction of biohumus in substrate enables a 4-19 time increase of its useful life without regeneration within more than 4 years and assures high and stable crop yield with high quality biomass. As compared to the control, the nitrates content of the plant biomass was, on the average, 3 times lower and decreased to the point of their total absence at the end of experiment. The results obtained allow us to recommend the above-mentioned technology of plant growing in space greenhouses both when included into closed environmental systems and in independent plant growth facilities aboard spacecraft. During space flights exceeding 2 years in length, additional supplies of biohumus will be required. This will be enough to stabilize the structure and the size of microbial community in substrate and provide a high crop yield.
authors.forename: R O
authors.initials: RO
authors.lastname: Geodakian
authors.forename: T V
authors.initials: TV
authors.lastname: Erofeeva
mesh_terms: D008372:Manure; D010945:Plants, Edible / Q000254:growth & development*; D012987:Soil; D013026:Space Flight; D013997:Time Factors; D017641:Zeolites
chemical_list: D008372:Manure; D012987:Soil; D017641:Zeolites
vernacular_title: Effektivnost' primeneniia bioperegnoia dlia vyrashchivaniia rasteniĭ v avtonomnykh usloviiakh.