Boron: A Small Nutrient with a Big Impact

In Irish agriculture, micronutrients often don’t get the attention they deserve. Among the most overlooked is boron—a critical element for plant growth, root development, and nutrient transport.

From sugar beet and fodder beet to brassicas like oilseed rape, boron deficiency can quietly undermine crop health and yield potential. Because symptoms are subtle or delayed, many farmers don’t realise boron is the missing link until it’s too late.

Why Boron Deficiency Happens

Boron availability is heavily influenced by soil and weather. Key risk factors include:

• Soil Type: Acidic and sandy soils tend to leach boron more easily
• Organic Matter: While boron is tied up in organic matter, it can also become unavailable after fertilization
• Moisture and Stress: Drought or flooding can make boron less accessible to plants

Symptoms often appear in the youngest leaves—which may look green but are brittle, misshapen, or thick. In more advanced stages, growing points die back and fruit formation becomes irregular.

How Our Boron Granules Make a Difference

Charles Tennant Ireland’s granules are specially formulated to deliver boron precisely and efficiently:

• High boron content, tailored for responsive crops like beet and brassicas
• Uniform granule size that mixes evenly with NPK blends
• Optimal solubility matched to soil moisture and pH conditions
• Reduced risk of leaching and volatilisation—successful even in light and sandy soils
• Proven efficacy under Irish field conditions, supporting early root and leaf development

This targeted approach helps close the hidden micronutrient gap—empowering growers to proactively safeguard yield and quality.

Methods of Boron Application

Boron can be applied using several methods, each suited to specific crops, soil types, and management systems:

• Soil Application:
  The most common method. Boron can be applied as part of a base fertiliser blend or as a separate application. It is especially effective in sandy, low organic matter soils prone to deficiency. Granular forms like Charles Tennant Ireland’s boron granules are ideal for even distribution and gradual release.
• Foliar Application:
  Useful for quickly correcting in-season deficiencies or supplementing soil-applied boron. It’s typically applied at early growth stages or pre-flowering, particularly for crops like oilseed rape, where timing is critical.
• Fertigation (in irrigation systems):
  Delivers boron directly through drip or sprinkler systems. This method ensures uniform distribution and allows for precise timing, but is mostly suited to high-value crops with controlled irrigation.
• Seed Treatment:
  Less common, but boron can be applied as a coating on seeds to promote early root and shoot development. Most effective when combined with other methods in boron-deficient areas.

Choosing the right method depends on crop sensitivity, soil properties, and the stage of growth. A combination of soil and foliar applications is often the most reliable strategy for preventing deficiencies and ensuring optimal boron availability throughout the season.

Don’t Let Micronutrients Limit Your Yield

If your crops are underperforming or showing signs of irregular development, it’s worth reviewing your boron strategy.