ULTRA HUMIMAX

Fully water-soluble potassium humate from premium leonardite, improving soil structure, nutrient efficiency, and crop stress tolerance.

Product Details	Flake and Powder
Humic acid（dry basis）	80％
Water solubility	100％
potassium（as K₂O）	10％
pH(1:100dilution)	9-11

Leonardite-based high-activity potassium humate, rich in reactive carboxyl functional groups that promote efficient nutrient absorption and translocation.
100% water-soluble and fast dissolving, suitable for foliar spray, drip irrigation, fertigation, and liquid fertilizer formulations.
Excellent soil-conditioning performance, increasing organic matter content, improving water retention, and enhancing crop drought and stress tolerance.

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Details

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Ultra HumiMax is a potassium humate organic fertilizer based on leonardite, which is completely water soluble and fast dissolving. It carries highly active carboxyl functional groups that enable plants to absorb mineral nutrients more efficiently. This product has a significant soil conditioning effect, increases soil organic matter and improves crop resistance to drought and stress.Ultra HumiMax is available in both flake and powder form for different application methods, including foliar sprays, drip irrigation and liquid formulations.

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Benefits

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• Increases soil organic matter, improving soil physical and chemical properties and overall soil vitality.

• Promotes stable soil aggregate structure, enhancing aeration, water-holding capacity, and resistance to erosion.
• Reduces soil EC levels, optimizing the root-zone environment and alleviating salinity stress.
• Regulates nutrient release behavior, minimizing potassium loss and extending fertilizer efficiency.

• Improves fertilizer use efficiency, enhancing root uptake of potassium and other mineral nutrients.
• Optimizes the rhizosphere environment, supporting healthy root development and nutrient absorption.
• Enhances crop stress tolerance, improving resilience to drought and adverse growing conditions.
• Promotes crop growth and quality formation, supporting photosynthesis and metabolic activity for healthy, stable yields.

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Field Application Cases

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ULTRA HUMIMAX promotes strong and healthy root development, enhances nutrient uptake efficiency, ensures more uniform fruit enlargement, and significantly improves fruit quality.

After application of ULTRA HUMIMAX, cucumber plants develop a strong and extensive root system with abundant fine roots, while the soil becomes loose and well-aerated.

After application, maize plants develop thick and sturdy stalks with dark green, glossy leaves, showing vigorous overall growth.

Recommended Application

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Method	Crops	Period	Dosage	Use Suggestion
Root Irrigation	Vegetables(tomatoes, watermelon, peppers, etc.)	Post-transplant, continuous harvesting period	7.5-15 kg/Ha	Add 0.75-1.5 /1000L Water
	Vegetables(tomatoes, watermelon, peppers, etc.)	Post-transplant, continuous harvesting period	7.5-15 kg/Ha	Add 0.75-1.5 /1000L Water
	Fruit trees (Tangerine, apple, grape cherry)	Bud stage, young fruit stage	15-25 kg/Ha	Add 0.75-1.5 /1000L Water
	Berries (coffee, blueberries, etc.)	Bloom, Expansion	7.5-15 kg/Ha	Add 0.75-1.5 /1000L Water
	Tubers (potatoes, sugar beets, sweet potatoes, etc.)	Seedling stage, tuber expansion stage	7.5-15 kg/Ha	Add 0.75-1.5 /1000L Water
	oleander, lettuce, etc.	Seedling stage, pre-maturity stage	7.5-15 kg/Ha	Add 0.75-1.5 /1000L Water
	strawberries	Current bud stage, continuous harvesting period	7.5-15 kg/Ha	Add 0.75-1.5 /1000L Water
	cotton	Seedling, bud stage	7.5-15 kg/Ha	Add 0.75-1.5 /1000L Water
	banana	Seedling and spike stage	7.5-15 kg/Ha	Add 0.75-1.5 /1000L Water

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Honors and Qualifications

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latest News

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August 13 , 2026

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about us

Welcome to CityMax Group

Citymax group was established in the ancient city of Xi’an. With subsidiaries:Xi’an Citymax AgroChemical Co.,Ltd., Xi’an Greenfert Crop Science Co.,Ltd., Shaanxi Citymax Agrotech Co.,Ltd.