How to Keep Roots Active During Autumn and Winter with NHDelta | Ecoculture

During autumn and winter, keeping roots active is one of the greatest challenges in perennial crops. In crops like avocado, where harvest can extend until March or April, ensuring a healthy and functional root system during the colder months is essential to sustain fruit development and build up energy reserves for the next season.

In this article, we will explain why maintaining root activity during this period is so important, and how NHDelta technology from Ecoculture can make a significant difference in crop performance and long-term productivity.

Roots: the invisible engine of the tree

Roots are not only responsible for anchoring the plant; they are the metabolic engine that absorbs water and nutrients essential for fruit growth and for the formation of reserves that will fuel the following season’s flowering and fruit set.

However, during the cold months, roots are exposed to several stress factors, such as:

• Drop in soil temperature

• Excess moisture or soil compaction

• Root diseases and rot

• Reduced soil aeration

All these conditions lead to lower root activity, which results in:

• Reduced nutrient and water uptake

• Depletion of stored reserves

• Lower fruit quality and smaller size

• Higher risk of alternate bearing (biennial bearing) in trees like avocado

NHDelta: Amide nitrogen to keep roots alive and efficient

At Ecoculture Ibérica, we recommend the use of NHDelta, an innovative technology based on amide nitrogen (NH₂)complexed with different elements — calcium, potassium, or iron — depending on the specific needs of the crop and the time of year.

Unlike nitrate or ammonium forms, the amide nitrogen in NHDelta:

• Is directly absorbed by the roots without energy expenditure

• Stimulates the metabolic pathway of cytokinins, which are the hormones responsible for root hair formation — the main sites of nutrient absorption

• Promotes the internal synthesis of amino acids, eliminating the need for energy-consuming transamination processes

• Keeps the root system active and oxygenated even under low-temperature conditions

Agronomic benefits of NHDelta application

Regular use of NHDelta throughout the year — especially during autumn and winter — has shown multiple agronomic benefits in field trials:

1. Greater root development
   It increases the number and density of root hairs, improving the active absorption surface.

2. Improved nutrient efficiency
   Plants make better use of soil nutrients, allowing a reduction in nitrate fertilizer use without compromising yield or fruit quality.

3. Healthier and longer-lasting roots
   The root system remains active and metabolically efficient even when temperatures drop.

4. Reduced stress and defoliation
   Trees maintain their physiological balance, avoiding premature leaf drop that affects flowering and fruit set.

5. Consistent yearly production
   By maintaining active roots, trees achieve a more stable and uniform production, minimizing alternate bearing.

Application and recommended dosage

The NHDelta program should be maintained year-round, with special emphasis from autumn to winter, when root activity naturally slows down.

• Recommended dose: 5–10 L/ha per month, depending on crop vigor and fruit load.

• Application method: via localized irrigation or fertigation.

• Compatibility: can be combined with other Ecoculture products, such as XStress (to prevent cold stress) and Rainbow Wave (to stimulate flowering).

Conclusion

Maintaining continuous root activity is essential to ensure tree balance, fruit quality, and long-term productivity. In crops such as avocado, applying NHDelta during the colder months keeps roots alive, healthy, and functional — minimizing stress and preventing alternate bearing.

NHDelta is a strategic tool for achieving a more efficient, sustainable, and profitable agriculture all year round.

Ecoculture Biosciences – Advanced technology and plant nutrition for a more sustainable agriculture.