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Salicylic Acid: Unleashing a Powerful Plant Elicitor

Farmers constantly strive to enhance the health and productivity of our crops. It is no secret that plants face numerous challenges, including pests, diseases, and environmental stressors. To combat these threats effectively, it’s crucial to explore innovative strategies that stimulate plant defence mechanisms. One such approach gaining recognition is the use of salicylic acid (SA) as a plant elicitor. Plant elicitors are compounds applied to plants that activate plant defence mechanisms. In this blog post, we will delve into the benefits of salicylic acid and how it can be leveraged to bolster the resilience of our crops.


Understanding Salicylic Acid

Salicylic acid is a naturally occurring compound found in various plants. It serves as a critical signalling molecule in plant defence responses, enabling them to ward off pathogens, pests, and abiotic stressors. When plants are exposed to these threats, they activate their innate defence mechanisms, leading to the accumulation of salicylic acid in the affected tissues.


Benefits of Salicylic Acid as an Elicitor

1. Disease Resistance: Salicylic acid plays a pivotal role in activating the plant’s immune system, triggering a cascade of defence responses. It enhances the production of antimicrobial compounds, strengthens cell walls, and activates pathogenesis-related (PR) proteins, which collectively combat invading pathogens. By applying salicylic acid as an elicitor, farmers can prime their crops to mount a rapid and robust defence against diseases.

2. Pest Management: In addition to combating diseases, salicylic acid also helps deter pests. It acts as a repellent and triggers a defensive response in plants, making them less palatable and more resistant to insect attacks. By incorporating salicylic acid-based elicitors into integrated pest management strategies, farmers can reduce their reliance on chemical insecticides and promote sustainable pest control practices.

3. Abiotic Stress Tolerance: Plants face numerous environmental stresses such as drought, heat, and cold, which can hamper their growth and productivity. Salicylic acid acts as a key player in regulating plant responses to abiotic stress. It helps plants to conserve water, minimise oxidative damage, and maintain cellular homeostasis. By applying salicylic acid, farmers can bolster the resilience of their crops, enabling them to withstand adverse environmental conditions.

4. Yield Enhancement: By harnessing the power of salicylic acid, farmers can witness improved crop yields. Plants treated with salicylic acid-based elicitors exhibit enhanced root development, increased photosynthetic efficiency, and better nutrient uptake. These factors contribute to overall plant vigour and translate into higher-quality yields. Furthermore, salicylic acid’s ability to mitigate stress and minimise yield losses makes it an invaluable tool for maximising agricultural productivity.

5. Superior Tank Mix Compatibility: compared to other elicitor products, such as chitosan and seaweed extract, there are far fewer issues when tank mixing with other agrochemicals. This is because unlike these extract-based products, salicylic acid is not based on carbohydrates that can fall out of solution (precipitate/flocculate) when they interact with the other agronomical formulations. As such, salicylic acid rarely requires a separate pass to get it onto the foliage of a crop.


Application Methods and Considerations

Salicylic acid-based elicitors can be applied to crops through various methods, including foliar sprays, seed treatments, and root drenching. It is essential to follow recommended dosage guidelines and application timings for optimal results. Additionally, it is crucial to source high-quality, reliable products from reputable suppliers to ensure efficacy and minimise potential side effects.

Until recently products containing salicylic acid never exceed a couple of percent concentration. This as because they were created using the standard methods of dissolving the product in water. This results in very large doses being required to get an effective dose onto a crop. However, Eutrema’s new 12.5% Salicylic Acid product is a soluble concentrate with a far lower dose rate. So farmers need to simply add 100-200mL into a 200 litre tank when applying another foliar treatment to get the full benefit of salicylic acid induced defence responses.

salicylic acid 5 litre
Our salicylic acid concentrate in a 5 litre polycan 



In the quest for sustainable and resilient agriculture, the use of salicylic acid as an elicitor of plant defence mechanisms offers immense potential. Its ability to boost disease resistance, manage pests, enhance stress tolerance, and improve yields make it a valuable asset for farmers. By incorporating salicylic acid-based elicitors into their crop management practices, farmers can unlock the natural defence mechanisms of plants, creating a healthier and more productive agricultural system.

So, let’s embrace the power of salicylic acid and empower our crops to thrive in the face of challenges, contributing to a more sustainable and secure food future. For more information or to discuss the use of salicylic acid on farms please get in contact with Eutrema!

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