BLOG #50

DROUGHT STRESS EXPLAINED

What happens to plants and how biostimulants can help

Drought stress occurs when plants do not have enough water for their needs. It affects growth, development and productivity. Understanding what happens inside the plant is the first step to managing its impact.

Drought Stress on wheat

1) WHAT HAPPENS DURING DROUGHT STRESS?

Water deficit

Water deficit

Limited water in the soil reduces water availability for the plant.

Stomatal closure

Stomatal closure

To reduce water loss, stomata close, limiting CO₂ uptake.

Reduce photosynthesis

Less CO₂ means less energy production and slower growth.

Oxidative stress

Oxidative stress

Imbalance of molecules (reactive oxygen species) damages cells.

Yield loss

Poor growth, smaller fruits or grains, and lower quality

2) KEY SYMPTOMS TO WATCH

Wilting : Leaves lose turgor.

Stunted Growth : Slower development and smaller plants.

Yellowing : Older leaves turn yellow.

Poor Fruit Set and Size

Reduced Yield and Quality

3) HOW BIOSTIMULANTS HELP PLANTS COPE WITH DROUGHT

1) Improve Root Development: Stronger, deeper roots explore more soil and access more water.

2) Enhance Water Use Efficiency: Help plants use water better and reduce water loss.

3) Support Photosynthesis: Keep photosynthesis active for more energy and better growth.

4) Reduce Oxidative Stress: Protect cells from damage and maintain plant health.

5) Improve Yield and Quality: Healthier plants result in better yields, even under water-limited conditions.


4) GOOD PRACTICES TO MANAGE DROUGHT

Monitor Soil Moisture : Irrigate based on crop needs and soil conditions.

Apply Biostimulants at Key Stages : Use preventively or at early stress symptoms for best results.

Combine with Good Agronomic Practices : Mulching, cover crops, and proper nutrition make a difference.

Choose the Right Product : Select biostimulants with proven ingredients and modes of action.

5) REMEMBER

Drought cannot always be avoided, but its impact can be reduced.

Biostimulants help plants stay strong, productive and more resilient under water stress conditions

Healthy plants are better prepared to face drought.
Farming with knowledge today for a more resilient tomorrow.