
HUMAC
For potatoes

Top quality and higher tuber yield: Stabilise your potato crop
Firm, uniform tubers • Drought resistance • Healthy, disease-free soil
Ensure a supply of essential nutrients and water in the root zone with HUMAC® Agro soil conditioner, which is based on activated natural humic acids. For a professional solution in organic farming.
Potatoes are heavy ‘consumers’ of nutrients and water. Their yield is extremely sensitive to fluctuations in moisture – uneven irrigation leads to misshapen tubers, cracking and susceptibility to disease. Furthermore, traditional fertilisation cannot always ensure the optimal utilisation of key elements such as potassium (K) and phosphorus (P).
The solution? Use HUMAC® Agro – a 100% natural soil conditioner based on activated humic acids. It brings about lasting improvements to the soil environment and acts as a smart nutrient and water manager, delivering exactly where the tubers need it.
How HUMAC® helps
🥔 1. Uniformity and quality of tubers
Thanks to nutrient chelation and a stable water regime, the plant experiences less stress. This leads to the formation of uniform tubers without deformities, with a higher dry matter content and a firm skin. Market quality and profit are improved.
💧 2. Maximum water retention for critical stages
The planting and tuber-filling periods are critical for water uptake. HUMAC® Agro increases the soil’s water-holding capacity, ensures stable moisture levels in the planting hole and protects potatoes from damage caused by drought.
🦠 3. Healthy soil and natural prevention
Humic acids stimulate the natural soil microflora and bind toxins. A healthier soil environment reduces the pressure from pathogens. Although this is not a fungicide, by promoting healthy soil life you indirectly help to reduce soil-borne diseases (e.g. leaf spot).
🧪 4. More efficient use of P and K
. Potatoes require large amounts of phosphorus and potassium. HUMAC® prevents the fixation and leaching of these essential elements and makes them available to the plant throughout the growing season. This allows you to maximise yield with the same amount of fertiliser.
Dosage
The key is to apply HUMAC® Agro at the right time before planting
; always apply it before planting and work it into the soil. It is safe and leaves no residues.
- Standard application rate: 300–500 kg/ha (depending on the humus content and the grower’s requirements).
- Application: Spread evenly over the entire area before ploughing or deep loosening. It must be worked into the root zone.
- Frequency: The treatment simply needs to be repeated every 3–4 years for long-term improvement in texture.
- Certification: Approved for organic farming (BIO).
An investment in the soil that pays off in the form of tubers
Stop struggling with disease and drought. Ensure your potatoes have the best possible growing conditions.

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