Brazil is the largest soy producer in the world and one of the reasons is the incorporation of bioinsums, that is, microorganisms that promote the biological fixation of nitrogen in the soil. Without such practice, this essential nutrient would have to be supplemented by fertilization. In handling fertilizer use, the economy generated for producers in Brazil is estimated at approximately US $ 15 billion annually.
The main bioinsum today commercially used are bacteria of the genre Bradyrhizobium spp. (rhizóbs). In one Study supported by FAPESPThis strategy was combined with a new bacterial isolated (PGPR, acronym for rhizobacteria promoting plant growth). The results were released in the magazine Microbiology Ecology.
“We observed that there was greater growth and production of pods in plants, without the microorganisms launched in the environment, impacting the structure of the native microbial community,” says Leandro Fonseca de Souza, a postdoctoral biologist at the Luiz de Queiroz Higher School of Agriculture Genetics Laboratory at the University of São Paulo (ESALQ-USP).
“In addition, combining these microorganisms has the potential to contribute to the assimilation of phosphorus in the soil by the plant, another important nutrient supplemented by fertilization,” he adds.
Discovery
THE Bacillus thuringiensis rz2ms9 It was isolated for the first time from the rhizosphere (region where the soil and the roots of the plants come into contact) from Guarana da Amazônia (PAULLINIA CUPANA, sorbilis) and demonstrated potential to promote soybean and corn growth in vegetation home experiments and also field tests.
This lineage is capable of producing steelphows (important molecules for capturing nutrients of the environment), vegetable hormones, phosphate solubilization and biological fixation of in vitro nitrogen. The lineage belongs to the collection of microorganisms of the Esalq Microorganisms Genetics Laboratory, from which another isolated, the Pantoea AGGLOMERANS CEPA ESALQ 33.1recently gained prominence as a commercial bioinsum developed in partnership between Bionat Biological Solutions and Esalq-USP.
The study innovated by demonstrating that the use of microorganism in the field brings little influence on the diversity of natural soil potential functions. It also pointed out that even when functional diversity was influenced, the effect was short -lived, lost to the end of a soy production cycle. This adds evidence to the environmental security of using B. Thuringiensis RZ2MS9 in coinoculation with existing bioinsums on the market for soybean crop.
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This content was originally published in research expand possibilities for sustainable soy production on the CNN Brazil website.
Source: CNN Brasil
Charles Grill is a tech-savvy writer with over 3 years of experience in the field. He writes on a variety of technology-related topics and has a strong focus on the latest advancements in the industry. He is connected with several online news websites and is currently contributing to a technology-focused platform.
