Soil is the first link in the production chain in the field. It's where plants find support, water, and nutrients for their growth and development. But when fertility is low, roots face obstacles that compromise crop performance, and it's precisely at this point that good management can transform a plantation's production potential.
Poor, acidic, or unbalanced soils directly affect plant root development, resulting in less developed plants and consequently more susceptible to water stress, pests, and diseases. To reverse this situation, it is necessary to adopt a set of strategies and techniques capable of restoring soil health and promoting root development.
Do you know why root development is so important?
The root system is responsible for absorbing water and nutrients from the soil, but its function goes beyond that. Well-developed roots increase plants' tolerance to periods of drought and promote greater utilization of fertilizers and amendments. Furthermore, they contribute to the accumulation of organic matter in the soil, improve the physical structure of the cultivated area, and promote balanced growth of the plant's aerial part.
In soils with low fertility, the first negative impact usually appears precisely in rooting, with superficial, short or stunted roots, which are unable to explore the entire soil profile.
Understand what characterizes low fertility soil:
Soils poor in essential nutrients, with an acidic pH and low cation exchange capacity, hinder the absorption of elements essential for plant metabolism. Some signs indicate this condition, such as low organic matter, high aluminum content, and deficiencies in macronutrients such as phosphorus, potassium, calcium, and magnesium. They also present compaction, low porosity, and limited response to traditional fertilization.
In a scenario like this, it is important to go beyond simply replenishing nutrients as we know them: it is necessary to improve the physical, chemical, and biological quality of the soil in a comprehensive way.
Let's understand some effective strategies to promote stronger roots:
1. Complete soil analysis and diagnosis
Before any intervention, we need to understand the area's true needs. Chemical and physical soil analysis should be the starting point, as it allows us to identify specific nutritional deficiencies, acidity levels, and aluminum saturation, as well as information about the soil profile structure, such as grain size, compaction, and fertility distribution across different zones of the cultivated area. Based on this data, we can then develop a more efficient technical management and correction plan aligned with the soil's characteristics.
2. Acidity correction
In acidic soils, root activity is limited by aluminum toxicity and low nutrient availability. Applying an effective soil amendment is essential to neutralize acidity, raise pH, and create a more favorable environment for root development and nutrient absorption.
At this stage, ITAÚ Limestone, a Viter product, is an excellent choice. With high reactivity, high PRNT, and an ideal balance of calcium and magnesium, the amendment effectively raises pH and reduces aluminum saturation. This action improves the soil's chemical characteristics, promotes greater nutrient availability, and enhances root development, creating more stable and productive conditions for crops.
3. Use of agricultural gypsum to deepen roots
In addition to liming, agricultural gypsum acts directly on the subsurface layer of the soil, improving its physical structure and chemical composition at depth. Gypsum's main benefits include:
- provides calcium and sulfur, which are essential for root growth;
- reduces toxic aluminum in subsurface soil layers;
- increases water infiltration and retention;
- favors root growth.
An option for using soil conditioners are products such as optmix, which combine limestone and gypsum, and are carried out in a single application, proving to be a great ally in correcting and conditioning the soil efficiently, with greater agility and practicality.
4. Increase in organic matter content
As soil health improves with correction and proper management, another fundamental aspect comes into play: organic matter content. This component is one of the main indicators of soil quality and plays a decisive role in building a fertile and biologically active environment.
Organic matter helps improve the physical and chemical structure of the soil, making it more aerated and less compacted, in addition to stimulating the multiplication of beneficial microorganisms, acting as a gradual source of nutrients and maximizing the efficiency of fertilizers.
The application of organic compounds to the soil, such as animal waste, the accumulation of straw or plant residues, also contributes to the increase in organic matter, in addition to being an effective way to increase biological activity and water retention capacity.
5. Balanced fertilization with a focus on phosphorus
Phosphorus is one of the most important nutrients for root system formation. Its deficiency is common in tropical soils, such as those of Brazil, and can go unnoticed without careful analysis. Initial fertilization containing highly soluble phosphorus sources, combined with nitrogen and micronutrients, promotes crop uptake and early root establishment.
Therefore, one option is, whenever possible, to align this step with soil correction, so that the environment is chemically able to absorb the applied nutrients.
6. Be careful with compression
Even fertile soil can have poor rooting capacity if it's compacted. This is usually caused by excessive machinery traffic, inadequate soil preparation, or excessive trampling in pasture areas.
Compaction impedes root penetration, reduces aeration, and compromises water infiltration. In more severe cases, mechanical decompaction (with subsoilers and scarifiers) may be necessary, always combined with subsequent correction of soil chemical and biological factors.
And remember: Well-nourished roots are the foundation of a high-performance crop.
Improving rooting in low-fertility soils isn't a matter of a single input or a single practice. It's important to understand that there's a set of well-founded technical decisions, ranging from diagnosis to the integrated application of amendments, fertilizers, and soil conditioners.
Producers who invest in soil health harvest more resilient, productive plants that are better adapted to field challenges. And we at Viter are here to help you on this journey.
