Portuguese 
English 
Spanish 
3 min of reading 
0 comments 
Invasive Weed Resistant To Herbicides Advances In Crops And Boosts Research With Caatinga Bacteria For Biological Control.
The growing difficulty in controlling the weedy plant buva has become one of the main barriers to agricultural production in Brazil. Resistant to chemical herbicides and highly adaptable, the plant jeopardizes crops, raises costs, and challenges producers.
In light of this scenario, researchers from Embrapa Meio Ambiente presented an alternative based on a microorganism found in the Caatinga, capable of preventing the germination of the invasive plant.
The research arises as a direct response to a practical problem in the field. Buva competes with agricultural crops for water, light, and nutrients, particularly affecting no-till areas and reducing the productive potential of farms.
-
Researchers identify marks of Ice Age megafloods in the United States, a phenomenon that crossed Montana, Idaho, Washington, and Oregon, sculpted rolling hills like waves, and left giant scars that still challenge the landscape.
-
The world’s smallest war drone fits in the palm of your hand, weighs 70 grams, is ready in less than a minute, and has already been delivered to over 45 countries. The Black Hornet nanodrone allows soldiers to spy on dangerous areas without leaving cover.
-
Study of surgical instruments found in Pompeii reveals that a Roman doctor died trying to escape Vesuvius carrying his entire professional kit, with tomography and X-ray identifying previously unknown tools.
-
NASA has just tested a “giant” the size of a car that could change everything in the lunar race: a fuel cell that turns water into energy and then recharges itself, without any refueling from Earth. See how it works.
Invasive Weed Changes The Routine Of The Rural Producer
In recent years, the presence of buva has ceased to be sporadic and now represents a constant risk.
The invasive plant spreads easily and shows resistance to different active ingredients used in chemical control.
As a consequence, producers need to apply more products, increase dosages, or combine herbicides, which raises management costs and amplifies environmental impacts.
This scenario reinforces the need for solutions that go beyond traditional methods. It is at this point that science begins to explore less obvious paths.
Caatinga Enters The Radar Of Agricultural Research
As buva advances in crops, researchers have turned their attention to the Caatinga, a biome characterized by extreme climate and great microbial diversity.
In these adverse conditions, bacteria develop natural substances to survive and compete.
According to Embrapa Meio Ambiente researcher Itamar Melo, this environment encourages unprecedented discoveries.
“The Caatinga can be seen as a natural laboratory. The microorganisms that live in this environment have developed unique survival strategies and often produce novel molecules that can be harnessed for different applications,” he states.
It was in this context that a specific bacterium caught the attention of scientists due to its ability to directly interfere with the germination of buva.
Natural Substances Against The Invasive Plant
During the research, the scientists identified that the bacterium produces compounds with a direct effect on weeds.
Among them are 3-hydroxybenzoic acid and albocyclin. Albocyclin, in particular, showed an unprecedented result.
According to researcher Danilo Tosta Souza from Embrapa Meio Ambiente, this is a groundbreaking discovery.
“This is the first record of the phytotoxic activity of albocyclin,” he explains.
These substances demonstrated potential to prevent the germination of the invasive plant, even in cases of resistance to chemical herbicides.
Bioherbicide From Embrapa May Reduce Dependence On Chemicals
One of the most relevant points of the research is that the effect does not depend solely on the isolation of the compounds.
The fermented broth of the bacterium, used in its crude form, also showed action against dicotyledonous invasive plants.
For researcher Luiz Alberto Beraldo de Moraes, this detail is strategic.
“The use of the fermented broth eliminates the need for purification of the compounds, which can reduce costs and make the process more viable from an industrial perspective,” he asserts.
This paves the way for the development of a bioherbicide, a biological product that can reduce industrial costs and facilitate application in the field.
Invasive Plant And The Future Of Agricultural Management
The advance of buva highlights the limits of isolated chemical control.
Therefore, the research fits into the concept of integrated weed management, which combines different strategies to reduce environmental impacts and increase control efficiency.
In this model, biological solutions gain ground for acting more specifically and sustainably, especially against hard-to-control invasive plants.
Despite the potential, researchers emphasize that the bioherbicide is not yet commercially available.
The next steps involve greenhouse tests, field experiments, formulation development, and environmental safety assessments.
Only after these stages will it be possible to think about the registration and commercial use of the technology.
The research reinforces that the Caatinga, often associated only with water scarcity, is also a source of solutions for modern agricultural challenges.
By transforming biodiversity into technology, the study points to a new path to face the advance of the invasive plant in Brazilian crops.
-
1 person reacted to this.