Do Premium Slug Pellets Survive the Speed and Spread Test?

We set out to test modern pellet application with the Stocks Pro-Jet 65

Do Premium Slug Pellets Survive the Speed and Spread Test?

Modern pellet application is faster, wider, and more demanding than ever. With spreaders like the Stocks Pro-Jet 65 capable of high forward speeds and long throws, pellets need to be tough enough to survive the journey from hopper to soil — and still land intact where slugs can find them.

That’s exactly what we set out to test.

Why Pellet Strength and Mass Matter

To achieve a uniform spread, a pellet needs adequate mass and consistent density. The larger the pellet, the greater its mass — and the greater the energy that can be imparted to propel it. This is why De Sangosse ferric phosphate pellets spread further, more evenly, and provide optimal protection over and above competitor pellets.

When pellets break up in the spreader or lose mass in-flight, you get poor baiting density, increased dust, and patchy control. A premium pellet solves that by delivering:

  • Durability – to survive high disc speeds and long throws without shattering.
  • Consistent spread pattern – to hit the working width evenly.
  • Low dust levels – to reduce waste and minimise environmental risk.

High-Speed Video: Proof in the Flight Path

Using high-speed video through a Stocks Ag Fan Pro-Jet 65 applicator, we assessed the ballistics of two pellets in real-world conditions:

  • De Sangosse premium ferric phosphate – minimal breakage, retaining size and shape throughout flight.
  • Dry process competitor – considerable breakage, with visible fragmentation before reaching the ground.

You can see the difference clearly in our side-by-side footage here.

Independent Spreadability Testing

In an independent spreadability test performed by SCS, De Sangosse ferric phosphate pellets achieved the best stability and uniform coverage at 24m+, with minimal breakage against three competitor pellets tested.
SCS Spreader & Sprayer Testing Ltd
De Sangosse ferric phosphate delivering superior spreadability compared to competitor pellets

What is CV?

The Coefficient of Variation (CV) is a standard way of measuring how evenly pellets are spread across the bout. It compares the variation in pellet distribution to the average, expressed as a percentage.

  • Lower CV = more even spread, fewer missed areas.
  • Higher CV = patchier spread, more risk of slug damage in untreated zones.

Results at typical application width (12m):

  • De Sangosse ferric phosphate pellet: CV 15.7%
  • Lentil-shaped pellet: CV 49.1%
  • Dry process pellet: CV 45.5%
  • Competitor wet process pellet: CV 44.7%

Results at wide application width (24m):

  • De Sangosse ferric phosphate pellet: CV 25.7%
  • Lentil-shaped pellet: CV 34.7%
  • Dry process pellet: CV 28.6%
  • Competitor wet process pellet: CV 52.2%

These results confirm that our pellets maintain accuracy and baiting density even at wide spreads, outperforming the competition.

Why De Sangosse Pellets Perform Better

The advantage comes down to De Sangosses TDS advanced wet process manufacturing processing:

  • Hardness – engineered to withstand high-impact acceleration.
  • Density – optimised for both spread width and baiting point consistency.
  • Uniform size and weight – for predictable flight characteristics.

This combination allows De Sangosse pellets to fly further, spread more evenly, and remain intact, ensuring slugs encounter them quickly.

The Farmer Advantage

  • Even coverage across the bout, reducing missed patches.
  • Reliable baiting points at both standard and wide working widths.
  • Consistent performance even at high forward speeds.

Conclusion

The speed and spread test, backed by independent SCS spreadability data, proves it — De Sangosse premium slug pellets survive the journey, land intact, and deliver control where it counts. That means better slug protection, fewer reapplications, and more confidence in the field.

Want to know more?

For more information visit Ferric Focus Smarter Slug Control