Privacy Policy

Nutrition starts in the soil

Before any decision about fertilization, there’s a simpler question: what does this soil already have to offer? The answer is rarely obvious. Two neighboring plots, cultivated the same way and under the same rain, can respond quite differently to the same dose of fertilizer — and the difference usually lies in characteristics that aren’t visible to the naked eye, such as texture, organic matter content, and cation exchange capacity.

That’s why soil analysis remains the starting point of any serious recommendation. It turns impression into measurement: instead of thinking potassium is lacking, the grower comes to know how much is lacking, at what depth, and how urgently. From there, planning stops being a recurring expense and becomes an investment with an estimable return.

Fertilizing isn’t about replacing what the plant consumes. It’s about building, over several harvests, an environment in which the root can find what it needs exactly when it needs it.

The three moments of decision

In practice, a crop’s nutrition is resolved across three distinct windows, and confusing one with another is the most common mistake among beginners:

1. Correction — adjusts pH and neutralizes toxic aluminum. It’s foundational work, done in advance, with effects that extend across harvests.
2. Fertility building — raises phosphorus and potassium levels to the range appropriate for the intended crop.
   • Depends on the area’s history and the cultivation system adopted;
   • Is usually spread across two or three harvests, according to the farm’s cash flow.
3. Maintenance — replaces what the harvest removes, season after season, preserving what has already been built.

Those who skip the first step and go straight to the third almost always pay more in the end: without corrected pH, much of the applied fertilizer simply isn’t available to the plant. You can find details on each stage on our products page, and check regional recommendations on the Embrapa portal.

---

Macronutrients and micronutrients

The divide between macro and micro concerns the quantity required, not the importance. A boron deficiency compromises flower set just as effectively as a nitrogen deficiency compromises vegetative development — the difference lies only in the dose needed to correct each case.

Those the plant consumes in larger volume

Nitrogen, phosphorus, and potassium form the best-known trio, printed on formulations as N-P-K. Calcium, magnesium, and sulfur round out the macronutrient group, often supplied indirectly through lime or agricultural gypsum itself.

Those that make a difference in small doses

Boron, zinc, manganese, copper, iron, molybdenum, and chlorine are required in much smaller amounts, but their absence limits yield just as much as any other nutrient’s. In sandy soils with low organic matter, monitoring these elements is often what separates a good harvest from a merely decent one.

A note on visual diagnosis

Foliar symptoms help, but they show up late. By the time a deficiency becomes visible, part of the yield potential has already been lost. That’s why leaf analysis is used as a complement — not a substitute — for soil analysis.

Technical note

Reference values vary according to the crop, growth stage, and the lab responsible for the analysis. Always consult an agronomist before setting doses.

Quick requirement reference

Nutrient	Classification	Predominant function
Nitrogen (N)	Macronutrient	Vegetative growth and protein formation
Phosphorus (P)	Macronutrient	Early rooting and energy transfer
Potassium (K)	Macronutrient	Water regulation and grain filling
Boron (B)	Micronutrient	Cell wall formation and flower set
Zinc (Zn)	Micronutrient	Enzyme activation and hormone synthesis

From the report to the truck

Between the analysis result and field application lies a stretch where a lot gets decided: choice of source, granulometry, timing of application, delivery logistics, and, above all, the compatibility between what was recommended and what the farm can actually execute. A technically flawless recommendation that ignores the planting window or the available machinery’s capacity never turns into yield.

This is where technical follow-up stops being an optional service. Adjusting the recommendation to the operation’s reality tends to pay off more than chasing the ideal formulation on paper. No nutrition program survives logistics that don’t add up — and when that happens, the cost shows up at harvest, not on the invoice.

---

Frequently asked questions

How often should I redo the soil analysis?
In areas still building fertility, annually. In areas already corrected and stable, the interval can stretch to two years, as long as application history is kept on record.

Can I apply lime and fertilizer at the same time?
The practice is possible in some situations, but lime needs time and moisture to react. Getting ahead on correction is still the safest path — and the cheapest one in the medium term.

Ready-made formulations or custom fertilization?
It depends on how variable the area is. Homogeneous plots tend to be well served by market formulations; areas with an irregular history tend to respond better to a specific program.

Last updated: review before publishing.