Fertilizer from the waste of lactic acid bacteria. Free Technical Library News

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Fertilizer from the waste of lactic acid bacteria

24.11.2022

Researchers from the University of Cattolica in Piacenza (Italy) have developed a new fertilizer from the waste products of the production of lactic acid bacteria.

Lactic acid bacteria are a group of microorganisms capable of fermenting various substrates. In this way, they create numerous products of interest to the agricultural and industrial sectors. Lactic acid bacteria are widely used in foods and nutraceuticals. Usually, for this they are cleaned by special installations, after which several thousand tons of waste are generated in Italy alone.

Researchers have used this waste in the production of fertilizers and biostimulants in agriculture. Trials focused on greenhouse cultivation of tomatoes and lettuce. The results showed that thanks to the waste from lactic acid bacteria, it is possible to reduce the amount of chemical nitrogen fertilizers by 30%, without reducing production. Also, new preparations have improved some physiological properties of plants.

Scientists also calculated that this approach could reduce greenhouse gas emissions associated with the production of chemical fertilizers by 40%.

Advanced chemical, microbiological and ecotoxicological analyzes have ruled out any negative impact on the environment and soil. At the same time, they showed the positive effect of microorganisms on the growth and protection of plants.

The scientists added that their study is relevant in the context of the European strategy "Farm to Fork" ("From farm to fork"). It calls for a 2030% reduction in fertilizer use, a 20% reduction in chemical pesticide use and a 50% loss of soil nutrients by 50. Expanding the use of industrial waste today is of great importance.

The advantage of using the new fertilizer was called that it simultaneously nourishes the plant, soil bacteria and enriches the level of soil humification. Researchers believe that such a fertilizer is environmentally friendly in the broadest sense, it is able to stimulate the entire system, and not just one organism.

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