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Haifa SOP fertilizer is a potassium sulphate fertilizer for Nutrigation™ of all crops. It combines potassium and  sulfur, two nutrients essential for plant growth. Haifa SOP is a recommended source of potassium where soil pH needs to be lowered, when sulfur is required, or when N application rates should be limited (e.g. at the end of the season).

Providing concentrated nutrition, readily available for plant uptake. It enhances plant’s  resistance to drought, frost, insects and diseases, thus improving yield and quality. Haifa SOP helps gaining higher nutritional value of crops, better taste and appearance, and improved suitability for transport and storage. Haifa SOP is a crystalline product, fast dissolving, highly soluble and virtually free of chloride.



Available products


Haifa SOP™ GG for Nutrigation™ of all crops and for production of liquid fertilizers
Haifa SOP™ Agri  for direct soil application and for preparation of fertilizer blends
Haifa SOP™ Bio for organic cultivation on all crops. pH is not changing in the stock solution


Haifa SOP dissolves rapidly
Haifa SOP 
 features high dissolution rate compared to other SOP products. At 20°C, typical quantity of
100kg per 1000 liter of water will dissolve in few minutes to yield a clear 10% solution, with virtually no
insoluble residues.

Haifa SOP is ideal for salt-sensitive crops
Haifa SOP contains very low levels of chloride, which makes it ideal fertilizer for crops which are sensitive
to this detrimental element. Haifa SOP, with its very low salt index (46 in index), is a recommended
source of potassium where there is a risk of salinity build-up and in intensive cultivation systems, both
protected and in open field.

Haifa SOP is rich in sulfur
Haifa SOP with its high sulfur content (18% S) is the fertilizer of choice for plants with high sulfur requirements,
such as oilseed rape, sunflower, cabbage, onion, leek, and others.

Haifa SOP decreases the pH in the stock solution

Haifa SOP is a nitrogen-free source of potassium
Haifa SOP provides nitrogen-free potassium, which allows growers to schedule fertilization programs that match crop needs during stages of reduced nitrogen requirements.


A complete fertilization program for olive trees

Follow our thorough recommendation, including a program for foliar spraying and a fertilization recommendation for olive trees in spain

Controlled release nutrition for oil palm

Multicote™ Agri controlled release fertilizers - The ideal nutrition for oil palm seedlings at the nursery and for oil palm planting  The most efficient nutrition

Crop Guide: Olives

Index: Origin and history Plant description and physiology Worldwide cultivation of olives Olive cultivars Yields  

Haifa fertilizers help the Australian growers produce top strawberries | December 2011

The fertilizers dissolve extremely well and pose no problems through growers' pumps and irrigation systems. Also read how the Multicote fertilizer helped growers to input savings, as well as production and operational benefits. And: Nutrigation of crops via irrigation machines

Fertilizer dissolving tools: preparing fertilizer solution easily


Growers nowadays have various aids to help them dissolve water soluble fertilizers quickly and efficiently. Learn about common fertilizer dissolving tools, accompanied by demonstration videos

Crop deficiencies

Potato: Nutrient Deficiencies  

Optimal plant nutrition for sports field turf

Q: What are the controlled release fertilizer recommendations for sports field turf?

Grapes-table: Nutrient deficiencies

Grapes-table: Macro nutrients - P (phosphate)


Haifa Solution:


Success story: Poly-Feed ™ fertilizer in almond crop cultivation


 Learn how Haifa Poly-Feed™ helped Spanish Almond grower answer the need for cultivating efficiently for optimum  growth