Haifa MKP Mono Potassium Phosphate 0-52-34 – Water Soluble Fertiliser for Fertigation, Foliar Feeding and Flowering

Mono Potassium Phosphate 0-52-34: Pure Phosphorus and Potassium

Haifa MKP Mono Potassium Phosphate is a high-purity, fully water soluble fertiliser that supplies concentrated phosphorus and potassium with no nitrogen. With an analysis of 0-52-34, this monopotassium phosphate delivers 52% phosphate (P₂O₅) and 34% potash (K₂O), making it one of the most concentrated straight PK fertilisers available. It is a go-to MKP fertiliser for fertigation, foliar feeding and hydroponics across vegetables, fruit, flowers and ornamentals.

A Flower Fertiliser for Bloom and Fruit Set

The nitrogen-free formula is what makes MKP so useful as a flower fertiliser. Phosphorus and potassium are in high demand at specific stages, root establishment early on, then flowering, fruit set and ripening. MKP delivers both without adding nitrogen that would push unwanted leafy growth at exactly the wrong time. Phosphorus supports energy transfer, root development and flower initiation, while potassium improves fruit quality, sugar content and colour. That makes it popular with growers of tomatoes, capsicums, strawberries, citrus, cut flowers, orchids and flowering pot plants.

A Clean, Soluble Fertiliser That Is Easy on Plants

As a soluble fertiliser, MKP dissolves completely into a clear solution without clogging drippers or nozzles. It is chloride-free and sodium-free, and has one of the lowest salt indexes of any water soluble fertilizer for plants, so there is little risk of burn even in foliar sprays or on sensitive crops. Haifa describes it on the bag as a water soluble fertilizer for Nutrigation and foliar sprays, and it is sold around the world as a monopotassium phosphate fertilizer for precision growing.

Key Features and Benefits

• Concentrated 0-52-34 analysis: 52% phosphate and 34% potash
• Nitrogen-free, so phosphorus and potassium can be applied without pushing leaf growth
• 100% water soluble, forming a clear solution with no clogging
• Chloride-free and sodium-free, safe for sensitive and chloride-shy crops
• Low salt index for good foliar tolerance and low burn risk
• Supports root establishment, flowering, fruit set and fruit quality
• Suitable for fertigation, foliar spraying and hydroponics

Product Details

• Brand: Haifa Chemicals Ltd
• Product: Haifa MKP, Mono Potassium Phosphate, Soluble Grade
• Chemical formula: KH₂PO₄ (CAS 7778-77-0)
• Analysis: 0-52-34
• Phosphorus pentoxide (P₂O₅): 52%, phosphorus (P): 22.7%
• Soluble potash (K₂O): 34%, potassium (K): 28.7%
• Available sizes: 2kg, 4kg and 25kg

How to Use

MKP dissolves readily in water, and solubility improves in warmer water. General guide rates:

• Fertigation: around 1 to 2kg per 1,000 litres of water, applied at key growth stages such as root establishment, pre-bloom and fruit set
• Foliar spray: a 0.5 to 1% solution (around 5 to 10g per litre), sprayed in the cooler parts of the day to avoid leaf stress
• Hydroponics: include in the nutrient solution according to crop and growth stage

Always match the rate to your crop, system and stage, and follow any product or agronomic guidance. As with any foliar feed, test on a small area first before treating a whole crop.

Frequently Asked Questions

What is monopotassium phosphate used for?
It is used to supply phosphorus and potassium at high-demand stages such as root establishment, flowering, fruit set and ripening, without adding nitrogen. It is popular in fertigation, foliar feeding and hydroponics for vegetables, fruit and flowering crops.

What is the analysis of Mono Potassium Phosphate 0-52-34?
It supplies 0% nitrogen, 52% phosphate (P₂O₅) and 34% potash (K₂O). On an elemental basis, that is 22.7% phosphorus and 28.7% potassium.

How do I mix and apply MKP fertiliser?
For fertigation, use around 1 to 2kg per 1,000 litres of water. For foliar spraying, use a 0.5 to 1% solution (about 5 to 10g per litre) in the cooler part of the day. In hydroponics, add it to the nutrient solution to suit your crop. Warmer water helps it dissolve faster.

Why use a nitrogen-free fertiliser?
At flowering and fruiting, extra nitrogen can push leafy growth at the expense of flowers and fruit. A nitrogen-free PK source like MKP lets you feed phosphorus and potassium precisely at those stages and manage nitrogen separately.

Is MKP safe for foliar spraying?
Yes. Its low salt index and chloride-free formula make it one of the more foliar-tolerant fertilisers, but use the correct concentration and test a small area first, especially in hot weather.

Where can I buy monopotassium phosphate in Australia?
Haifa MKP Mono Potassium Phosphate is available from BPG Supplies in 2kg, 4kg and 25kg, with local pickup from our Bonnyrigg store in Sydney's south-west and delivery options across Australia shown at checkout.