What is tomato tuta and how can you prevent it in your crops?
The tomato tuta is a devastating pest that mainly affects tomato crops and other related crops. Knowing what tomato tuta is and how to detect it in time is key to protecting your production.
Here we show you the best strategies to prevent and control this threat.
- What is tomato leafminer or Tuta absoluta?
- Identification and symptoms of tuta presence in your crops
- Effective methods to prevent Tuta absoluta in your crops
- Techniques and treatments for controlling and eliminating Tuta absoluta
- Best garden greenhouses to prevent tomato leafminer
What is tomato leafminer or Tuta absoluta?
The tomato leafminer or Tuta absoluta, also known as the tomato moth, is a small moth native to South America that has spread across much of the world since the early 2000s. Its ability to reproduce quickly and its voracity make it one of the most destructive pests for tomato cultivation.
This insect is characterised by an accelerated life cycle, which makes it difficult to control if action is not taken quickly. Since its arrival in Europe, Tuta absoluta has caused significant losses in agricultural production, affecting both small gardens and large farms.
Crops affected by Tuta absoluta
Although its name refers to tomato, this pest is not limited to it. It also attacks other solanaceous and cucurbit crops such as:
- Aubergine
- Pepper
- Potato
- Cucumber
However, it is on tomato plants where it causes the most severe damage, putting the quality and quantity of production at risk.
Economic and agricultural impact of the pest
The consequences of Tuta absoluta infestation are very serious. It has been documented that it can reduce production by up to 80% if not properly controlled. This means major losses for growers and increased costs in treatments and crop losses.
In addition, the presence of this pest affects fruit quality, causing visible damage that impacts its marketing and storage. Therefore, understanding what tomato leafminer is and how to manage it is crucial for any grower.
Identification and symptoms of tuta presence in your crops
Visible symptoms on leaves, stems and fruits
Detecting Tuta absoluta in time means recognising the signs it leaves on the plant. The main symptoms include:
- Galleries and tunnels in leaves and stems, where the caterpillar feeds by mining the internal tissue.
- Black spots on fruits and stems, which are the larval entry holes.
- Perforated and deformed fruits, with the presence of wilted tissue and sometimes rot.
These lesions weaken the plant and can be confused with damage from other pests, so careful inspection is necessary.
Difference between caterpillar and moth
Tuta has two visible stages for the grower:
- Caterpillar: the larval stage, small and greenish, which actively feeds by making tunnels inside the plant.
- Moth: the adult, a small greyish-brown insect responsible for laying eggs to perpetuate the pest.
It is the caterpillar that causes direct damage, but the moth is key to reproduction and spread.
Consequences of damage to the plant and fruits
When Tuta absoluta attacks, the plant loses vigour and productive capacity. Affected leaves do not perform photosynthesis properly and damaged fruits are not suitable for sale or consumption.
In addition, the presence of wounds makes it easier for secondary diseases to enter, which can further worsen the situation. For this reason, identifying tomato leafminer quickly is vital to avoid irreversible damage.
Effective methods to prevent Tuta absoluta in your crops
Cultural and crop management measures
Prevention is the best weapon against Tuta absoluta. Some recommended practices include:
- Crop rotation to prevent the pest from becoming permanently established.
- Removal of infected plant remains that may harbour larvae.
- Maintaining a clean environment free of weeds that may serve as shelter.
- Sowing at times that hinder the pest’s development.
Use of physical barriers and traps
Installing garden greenhouses is an effective way to protect crops from moth entry, creating a physical boundary that prevents access.
Within this category, models such as the tunnel greenhouse, the straight-wall tunnel greenhouse and the mini-tunnel greenhouse stand out, as they are especially recommended for controlling flying pests and minimising the incidence of tuta.
In addition, chromatic traps and pheromones can help detect and reduce the population of adult moths.
Importance of monitoring and early detection
Constant monitoring allows the pest to be detected before it causes severe damage. It is advisable to regularly inspect leaves and fruits for the first signs of attack.
Using pheromone traps to capture adult moths is a simple and effective method to anticipate the problem and act in time.
Techniques and treatments for controlling and eliminating Tuta absoluta
Chemical treatments: advantages and precautions
When the pest is already established, chemical treatments may be necessary to slow its advance. However, they must be used with caution to avoid resistance and damage to the ecosystem.
It is essential to choose authorised products and follow application instructions, as well as respecting pre-harvest intervals.
Biological control and ecological methods
There are natural enemies of Tuta absoluta, such as certain predatory insects and parasitoids that can be integrated into crop management to keep the pest under control.
The use of biological products, plant extracts or specific microorganisms also offers a sustainable and less aggressive alternative for the environment.
Integration of methods for sustainable management
Successful control of tuta involves combining several strategies. For example, maintaining constant monitoring, applying cultural measures, using greenhouses and physical barriers, and complementing these with chemical or biological treatments when necessary.
This integration reduces dependence on pesticides and improves crop health in the long term.
Best garden greenhouses to prevent tomato leafminer
FERTRI’s garden greenhouses offer a practical and efficient solution to protect your crops from Tuta absoluta. With these structures, you can better control environmental conditions, creating an environment less favourable to the pest and ensuring healthier plant growth.
Among the featured models are the tunnel greenhouse, the straight-wall tunnel greenhouse and the mini-tunnel greenhouse, all designed to provide effective protection against flying insects and facilitate crop management.
We invite you to review each model so you can choose the one that best suits your project. And if you have any other questions, you can contact us and we will advise you.