[Characteristics of the formation of a microbial complex in the nutrient solutions of higher plants after the use of straw mineralization products].
The effect of a product of wheat straw mineralization, e. g. ecothole, on the formation of a microbial complex that is concomitant with lettuce plants during 7 vegetations (i. e. 189 days) was investigated. The plants were grown by the subirrigation-aeroponic method on nutrient solutions that were not replaced throughout the study. It was found that in the course of lettuce ontogenesis the count of microorganisms, fungi and actinomycetes varied in the range 10(5) to 10(6), 10(2) to 10(4) and 10(2) to 10(5) cells per ml solution, respectively. During all lettuce vegetations 19 bacterial species were isolated. During the first vegetation a stable microbial complex with predominant gram-negative bacteria developed. However, addition of ecothole caused an increase in the count of spore-forming bacteria, whereas in the control the count of nitrogen-fixing bacteria grew.
D018504:Ecological Systems, Closed; D005308:Fertilizers; D008021:Life Support Systems; D009586:Nitrogen Fixation; D010945:Plants, Edible / Q000254:growth & development / Q000382:microbiology*; D012996:Solutions
D005308:Fertilizers; D012996:Solutions
Osobennosti formirovaniia mikrobnogo kompleksa pitatel'nykh rastvorov vysshikh rasteniĭ pri ispol'zovanii produktov mineralizatsii solomy.