Microbiological properties of natural film–forming materials
DOI:
https://doi.org/10.15587/1729-4061.2014.22007Keywords:
biopolymer, xanthane, carboxymethylcellulose, starch, composition, Escherichia coli, mold fungi, yieldAbstract
Microbiological analysis of natural film-forming materials-biopolymers, their solutions and compositions based on them is considered; their physical characteristics, the impact on crop yield and research results are given in the paper.
The study was aimed at investigating the influence of compositions on germination and yield of plants, properties of aqueous solutions of biopolymers and compositions based on them, as well as studying their impact on various types of microorganisms. The optimum percent concentration of biopolymers (XA-0, 125%, CMC -0,5%, ST-2%), which allows forming the optimal film thickness - from 15.5 microns to 19.5 microns, at which it dissolves fast enough, not clogging the seed surface, and the optimal ratio of fertilizers and micronutrients are selected.
Using microbiological methods it was determined that harmful microorganisms such as E. coli and mold fungi that cause diseases and damage seed grain do not develop in the studied biopolymers and compositions based on them. Thus, compositions are characterized by high hygienic indicators, and seeds, treated by them do not require additional treatment since they show bactericidal and partially fungicidal properties, inhibiting the growth of microorganisms.
Using the studied compositions allows to reduce the total expenditure of fertilizers and micronutrients by 9-107 times and provides increased crop yields up to 75-80% compared to control plants.
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