Haifa Multi-K potassium nitrate products are designed for different growing systems, water conditions and plant-nutrition requirements. The important distinction is where and why each formulation is intended to be used.
Greenhouse drip fertigation, hydroponic production, hard or alkaline irrigation water, zinc nutrition, foliar feeding and soil-applied nutrition create different requirements. These conditions provide the basis for understanding the products within Haifa's potassium-nitrate-based portfolio.
This AgriFirst guide explains Multi-K GG, Multi-K Reci, Multi-K pHast, Multi-K Zn, Haifa Bonus and Haifa MultinpK, including their defining characteristics and the growing situations for which they are positioned.
What Is Haifa Multi-K Potassium Nitrate?
Haifa Multi-K is a potassium nitrate range that supplies potassium and nitrate-nitrogen. Its formulations are designed around different growing systems, water conditions and plant-nutrition requirements.
Potassium nitrate is a fully water-soluble source of potassium and nitrate-nitrogen. Understanding the Haifa Potassium Nitrate range therefore requires identifying the requirement each formulation is intended to address.
- Multi-K GG: greenhouse-grade potassium nitrate.
- Multi-K Reci: very-low-sodium potassium nitrate for hydroponic and recirculating systems.
- Multi-K pHast: acid-stabilised potassium nitrate for hard or alkaline irrigation water.
- Multi-K Zn: potassium nitrate combined with zinc.
- Haifa Bonus: potassium-nitrate-based formulation optimized for targeted foliar feeding.
- Haifa MultinpK: granular NPK nutrition for soil application.
The practical principle is to match the formulation with the farming condition or nutritional requirement it is designed to address.
Why Are There Different Haifa Multi-K Products?
Different Haifa Multi-K products exist because plant nutrition is used under different production conditions. Greenhouse fertigation, recirculating hydroponics, hard irrigation water, zinc nutrition, foliar feeding and soil application do not create the same product requirement.
No single product in this group should automatically be treated as the correct choice for every farm. The relevant starting point is the growing system, application route or nutritional condition that needs to be addressed.
Multi-K GG for Greenhouse and Drip Fertigation
Multi-K GG is Haifa's greenhouse-grade potassium nitrate with a 13-0-46 composition. It supplies potassium and nitrate-nitrogen in a fully water-soluble formulation that is free from chloride and sodium.
For greenhouse, polyhouse and drip-fertigation production, Multi-K GG is the greenhouse-grade option in the range. Its stated grade is 13-0-46, combining nitrate-nitrogen and potassium in one potassium nitrate formulation.
What Makes Multi-K GG Distinctive?
- Supplies potassium together with nitrate-nitrogen.
- Free from chloride and sodium.
- Fully water-soluble for fertigation.
- Supports fruit size, color, firmness and shelf-life.
- Supports plant tolerance to drought, frost and disease.
Multi-K GG Crops and Application
Multi-K GG is relevant across tomato, capsicum, cucumber, chilli, banana, grape, pomegranate, citrus, potato, leafy greens and many polyhouse vegetables and fruit crops.
It can be used through drip fertigation and can also be applied through foliar spraying. A specific feeding program should not be inferred from a general product description because crop and farm conditions vary.
Multi-K Reci for Hydroponic and Recirculating Systems
Multi-K Reci is a very-low-sodium potassium nitrate formulated for hydroponic and recirculating growing systems. It supplies potassium and nitrate-nitrogen while minimizing sodium accumulation in the nutrient solution.
The defining characteristic of Multi-K Reci is its very low sodium level. This is relevant to recirculating nutrient solutions where salt accumulation needs to be controlled.
Where Does Multi-K Reci Fit?
- NFT systems
- Recirculating hydroponics
- Drip-to-drain production
- Soilless growing systems
Its consistent purity is intended to support stable EC and nutrient balance while supplying potassium and nitrate-nitrogen without chloride.
Crops associated with Multi-K Reci include hydroponic leafy greens, tomato, cucumber, capsicum, strawberry and other crops grown in soilless systems.
Multi-K pHast for Hard or Alkaline Irrigation Water
Multi-K pHast is an acid-stabilised potassium nitrate intended for hard or alkaline irrigation water. It supplies potassium and nitrate-nitrogen while helping lower nutrient-solution pH and reduce scaling and emitter clogging.
Water quality is the defining consideration for Multi-K pHast. It is positioned for growers who require potassium nitrate while also working with hard or alkaline irrigation water.
By helping lower nutrient-solution pH, Multi-K pHast helps reduce scaling and precipitate formation associated with emitter clogging. This connects potassium nitrate nutrition with fertigation-system reliability.
Multi-K pHast vs Multi-K GG
Both products provide potassium and nitrate-nitrogen, but they address different conditions. Multi-K GG is the greenhouse-grade option, while Multi-K pHast adds an acid-stabilised characteristic for hard or alkaline irrigation water.
Multi-K pHast is suitable across fertigated vegetable, fruit and flower crops, particularly where irrigation-water quality contributes to drip-clogging problems.
Multi-K Zn for Potassium Nitrate and Zinc Nutrition
Multi-K Zn combines potassium nitrate with zinc in one formulation. It supplies potassium and nitrate-nitrogen while also addressing zinc nutrition.
Unlike a potassium nitrate formulation alone, Multi-K Zn incorporates zinc. This allows it to support potassium and nitrate-nitrogen nutrition while correcting or preventing zinc deficiency.
What Does Zinc Deficiency Look Like?
Classic indicators of zinc deficiency include small or narrow leaves, shortened internodes and poor growth as typical signs associated with zinc deficiency. A soil or tissue test can be used to confirm whether zinc deficiency is actually present.
Multi-K Zn is fully water-soluble and free from chloride and sodium. It can be used through fertigation or foliar application where zinc deficiency is a concern.
Relevant crops include citrus, grape, cereals, maize, vegetables and other zinc-responsive crops.
Haifa Bonus for Targeted Foliar Nutrition
Haifa Bonus is a potassium-nitrate-based product optimized for foliar feeding. It is intended to provide potassium and nitrogen through rapid leaf uptake while supporting fruit set, sizing, coloring and crop quality.
The primary distinction of Haifa Bonus is its focus on foliar nutrition rather than greenhouse, hydroponic or irrigation-water management. It can complement drip fertigation where targeted foliar feeding is required.
What Is Haifa Bonus Intended to Support?
- Rapid potassium and nitrogen delivery through leaf uptake
- Fruit set
- Fruit sizing
- Color development
- Targeted foliar nutrition alongside drip fertigation
Haifa Bonus is chloride- and sodium-free and is described as having a low scorch risk when used at recommended rates.
Its listed crop suitability includes grape, pomegranate, citrus, tomato, capsicum, banana and other fruiting crops.
Haifa MultinpK for Soil-Applied NPK Nutrition
Haifa MultinpK is a granular NPK complex based on potassium nitrate for soil application. It provides balanced N-P-K in every granule and offers an option where fertigation is not being used.
Haifa MultinpK extends the comparison beyond water-soluble fertigation products. It is intended for soil application in field crops, orchards and plantations and can be broadcast or band-applied.
Its distinguishing feature is balanced N-P-K within every granule together with a potassium-nitrate base that provides chloride-free potassium.
This makes Haifa MultinpK different from Multi-K GG, Multi-K Reci, Multi-K Zn and Multi-K pHast when the farming setup is considered. It is a soil-applied granular product rather than one selected primarily around drip or hydroponic nutrient solutions.
Its listed crop range includes cereals, pulses, oilseeds, vegetables, orchards and plantation crops.
Multi-K GG vs Reci vs pHast vs Zn: Key Differences
The main difference between these Haifa potassium-nitrate-based products is the growing condition or nutritional requirement they are designed to address. Product type, primary distinction and relevant context provide the clearest basis for comparing the range.
| Product | Product Type | Primary Distinction | Relevant Context |
|---|---|---|---|
| Multi-K GG | 13-0-46 potassium nitrate | Greenhouse-grade formulation | Greenhouse and drip fertigation |
| Multi-K Reci | Low-sodium potassium nitrate | Very low sodium | Hydroponic and recirculating systems |
| Multi-K pHast | Acid-stabilised potassium nitrate | Helps lower nutrient-solution pH | Hard or alkaline irrigation water |
| Multi-K Zn | Potassium nitrate + zinc | Includes zinc nutrition | Where zinc deficiency is a concern |
| Haifa Bonus | Foliar-grade potassium nitrate formulation | Rapid leaf uptake | Targeted foliar nutrition |
| Haifa MultinpK | Granular NPK complex | Balanced N-P-K for soil application | Field crops, orchards and plantations |
Which Haifa Multi-K Product Fits Your Farming Situation?
Product selection begins by identifying the farming condition that needs to be addressed. Growing system, crop, soil, water quality and growth stage are relevant when building the final nutrition strategy.
Are You Using Greenhouse or Drip Fertigation?
Multi-K GG is the greenhouse-grade 13-0-46 potassium nitrate option.
Is the Crop Grown Hydroponically or in a Recirculating System?
Multi-K Reci is designed around very low sodium for recirculating, NFT and other soilless growing situations.
Is Hard or Alkaline Irrigation Water a Concern?
Multi-K pHast is the acid-stabilised formulation developed for hard or alkaline irrigation-water conditions.
Is Zinc Nutrition Also Required?
Multi-K Zn combines potassium nitrate with zinc.
Is the Requirement Specifically Foliar?
Haifa Bonus is optimized around targeted foliar feeding.
Is a Soil-Applied Granular NPK Required?
Haifa MultinpK provides the soil-applied granular NPK option, particularly where fertigation is not being used.
How Haifa Multi-K Fits Into the Wider Plant Nutrition Range
Haifa Multi-K represents the potassium nitrate category within the wider Haifa plant nutrition portfolio available through AgriFirst. The wider portfolio also includes separate categories for water-soluble fertilizers, controlled-release nutrition, micronutrients and biostimulants.
Keeping these categories separate helps growers research plant nutrition according to the type of product required.
- Explore Haifa Water Soluble Fertilizers for products beyond the potassium nitrate category.
- AgriFirst also lists Haifa Controlled Release products as a separate plant-nutrition category.
- The Haifa Micronutrients range is available under Haifa Micro.
- The broader portfolio also includes Haifa Biostimulants under HaifaStim.
Main Takeaway: Match the Product to the Requirement
Haifa Multi-K should be understood as a group of purpose-specific potassium-nitrate-based products rather than one fertilizer used in the same way under every condition. The relevant formulation depends on the nutritional requirement and the conditions in which the crop is being grown.
The practical starting point is to identify the production condition or nutritional requirement first and then evaluate the formulation designed for that situation. This provides a clearer basis for discussing plant nutrition than selecting a product solely by its nutrient name.
Build a Crop-Specific Haifa Nutrition Plan with AgriFirst
We carefully evaluate what each Haifa formulation is designed to do. A crop-specific feeding program requires consideration of the crop, soil, water quality, growth stage and farming setup.
AgriFirst works with growers on plant nutrition at the farm level rather than treating one fertilizer program as suitable for every situation. The nutrition plan can be aligned with the conditions under which the crop is actually being grown.
Growers can connect with an AgriFirst Agronomist for a custom, crop-specific feeding schedule — or use our Haifa product finder to get started.
