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Boron Deficiency

Boron Deficiency

A boron deficiency is recognisable by discolouration of the younger leaves. You’ll also see a rust-coloured deposit on the crop. New leaves seem to have their ends burned. A lack of boron also renders the crop fragile. Roots are also vulnerable to boron deficiency: their growth will lag behind.

How do you recognise a boron deficiency?

  • Rusty deposits on the younger leaves.
  • New leaves seem burned, thick and brittle.
  • The crop will be fragile.
  • Brown spots on the crop.
  • Twisted leaves.
an overview shot of some leaves and a stem that are suffering from a boron deficiency

What is the (possible) cause?

  • The soil or substrate has been in use for too long.
  • The pH value of the soil or substrate is too high.
  • The root environment is too dry.
  • Incorrect nutrition.
  • Boron is easily soluble. This means it can easily be washed out of the soil.

How can you prevent it?

Boron deficiencies are rare. Under normal circumstances plants will not suffer from it. However, during intense stress or a growth spurt the plant is more susceptible to deficiencies. Use one of our basic nutrients (like Dutch Pro Soil or Hydro/Cocos A+B) to reduce the likelihood of a deficiency. Also keep abiotic factors in mind. These include temperature, light intensity, acidity, amount of moisture and wind strength.
 

How can you cure it?

Make sure the moisture level of your soil is in order. Lowering the pH value can also be a solution. To do so, rinse your system with clean, pH-controlled water or use a pH additive like Growth Technology pH DOWN. Older, damaged leaves may not recover.
 

What does boron do for the plant?

Boron is important for cell stretching and cell division. It plays a role in the water management of the plant and the transport of carbohydrates. Additionally, it stimulates the flowering. It also helps with the production of sugars.
 
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