Soil Nutrition26 September 2025Part 2 of 2

Crop Success in South Africa: Timing & Nutrient Management (Part 2)

Testing tells you what the soil needs. Timing is what turns that knowledge into yield.

A hand holding two cereal grain heads side by side, one healthy and green, one paler and weaker

In Part 1 we explored why soil health is the foundation of farming success, and how the DRIS nutrient system reveals exactly what soil and crop need. But testing alone isn't enough. To unlock a field's full potential, nutrients also have to be applied at the right time, in the right way.

This is where soil knowledge becomes smart action, turning analysis into higher yields and sustainable profit.

From knowledge to action

01Why timing matters as much as testingA poorly timed application wastes money and leaves crops underperforming.

Knowing what your soil needs is vital, but applying nutrients at the right stage of crop growth is what unlocks real results. A late or poorly timed application wastes money, harms the environment and leaves crops underperforming. So DRIS doesn't stop at soil testing, it aligns each application with the crop's growth phase for maximum impact.

02Phase 1: pre-plantingSetting the stage: correct imbalances before the seed goes in.

Before planting, soil analysis identifies imbalances and nutrient gaps. Custom blends can then correct deficiencies and prepare the field for germination.

Correcting soil pH and nutrient levels gives seeds a healthy start
Tailored mixes replace generic blends, preventing over-application and reducing risk to seedlings

03Phase 2: roots and aerationStrong, deep roots set up everything that follows.

Early vegetative growth is all about roots. Strong, deep root systems improve nutrient uptake and soil aeration, helping plants resist stress and prepare for higher yields.

04Phase 3: tuber initiationFor potatoes, this is where precision pays off most.

For tuber crops like potatoes, this is where precision matters most. Using foliar applications and precise nutrient ratios, DRIS supports:

Early tuber initiation
Strong stolon development, short and robust “runners”
Uniform tuber size and quality

That translates directly into better marketability and higher profits.

05Nutrient mobilityNot all nutrients behave the same way in the soil.

Immobile nutrients like phosphorus and potassium stay where they are applied.
Mobile nutrients like nitrogen and sulphur can leach out, especially in sandy soils or after heavy rain.

Applying the right nutrient at the wrong time leads to waste. DRIS builds a plan that accounts for these differences, reducing both risk and cost.

06The bigger pictureTest first, then apply at the right time. Farm smarter, not harder.

An integrated approach delivers:

Lower fertiliser costs through precision application
Higher yields and better quality from balanced nutrition
Sustainable soil management by tracking long-term change

Test first, then apply at the right time. Don't leave your harvest to chance, let your soil and science guide the way.

Start of the series

← Read Part 1: soil health foundations

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