Application of Ultra HumiMax DF on Potatoes: Verification of Systematic Growth Promotion and Enhancement of Quality and Efficiency

Application period: May 2025

Target crop: Potatoes

Application method: Root drenching

Application rate: 1kg per hectare

Usage Context

During the formation and bulking period of potato tubers, the crop's demand for nitrogen, phosphorus, potassium, and functional nutrients increases significantly. If root absorption efficiency is insufficient or nutrient metabolism within the plant is limited, issues such as excessive aboveground growth, premature senescence, weak stems, slow tuber bulking, irregular tuber shapes and coarse skin, uneven size, and reduced stress resistance are likely to occur.

This demonstration centres on the application of Ultra HumiMax DF via root irrigation, investigating its effects on the regulation of potato above-ground growth, root vitality, and overall nutrient transport efficiency.

Before use, the overall growth of the potato plants is moderately weak, some lower leaves are yellowing and lack resilience, new roots develop slowly with fewer fine roots, the overall plant rhythm is slightly behind the normal growth cycle, flowering is limited, and the initial tuber swelling rate is slow.

【After using the product】

The test results indicate: The Ultra HumiMax DF treatment demonstrated systematic and robust growth regulation advantages in this potato field trial. It significantly outperformed the control in key agronomic indicators, including stem robustness, leaf chlorophyll content, tuber expansion rate, and tuber uniformity, with high consistency across replicates. This suggests that Ultra HumiMax DF can comprehensively optimise nutrient cycling in the soil-crop system and exerts a significant enhancing effect in coordinating above-ground growth with below-ground tuber development, with overall performance clearly superior to conventional treatments.

ULTRA HUMIMAX DF Product Overview

Ultra HumiMax DF is made from carefully selected high-quality young lignite from mining areas, activated using MAXMRT molecular recombination technology and blended with various inorganic nutrients. The product is highly active and easily soluble; it contains high-activity humic acid ≥50%, with a total nitrogen, phosphorus, and potassium content ≥20% (4-0-16), and is also rich in trace elements such as iron, copper, zinc, boron, and manganese. It can effectively improve soil structure, regulate soil microbial communities, promote root growth, and enhance fertiliser use efficiency and crop quality.

Product efficacy:

• Improve soil and reduce salinity and acidity

Humic acid promotes the formation of soil aggregates, improves aeration and porosity, alleviates compaction, and enhances the soil's water and nutrient retention capacity. It adsorbs salt ions to reduce salinity damage and forms stable complexes with heavy metals to reduce toxicity. It has a buffering effect, capable of regulating pH in both directions, helping to maintain soil vitality and health.

• Efficient Fertiliser · Control Loss and Increase Efficiency

Combining with nitrogen reduces volatilisation and leaching losses, prolongs fertiliser supply, and releases fixed phosphorus; it promotes soil potassium activation and absorption. Achieving 'nitrogen control, phosphorus release, potassium activation' significantly improves fertiliser utilisation.

• Enhance beneficial microbes and restore soil fertility

Provide beneficial bacteria with high-quality carbon sources to promote microbial growth and inhibit harmful bacteria. Promote nutrient cycling and mineralisation, enhance soil vitality, and help the soil "fertilise itself".

• Strengthen Roots and Seedlings·Enhance Quality

Promotes the growth of root hairs and lateral roots, enhancing absorption capacity; chelated trace elements improve photosynthesis and the performance of flowers and fruits. With continued use, crop roots become strong, leaves are dark green, and resistance and quality are significantly enhanced.

Product link：https://www.citymax-group.com/ultrahumimax-df-product/