Can Phosphorus Be Tank Mixed with Calcium?  With Nova PeKacid®, the Answer Is Yes. 

Traditionally, calcium and phosphorus are not tank mixed. Under typical conditions, they react to form insoluble calcium phosphate—risking clogged systems and tying up nutrients in forms unavailable to the plant. 

Why Is Nova PeKacid Different? 

Nova PeKacid’s patented low pH formulation changes this interaction, helping keep phosphorus soluble and available—even in the presence of calcium and magnesium. 

What this means in practice: 

• Low pH conditions enable tank mixing with calcium and magnesium fertilizers  

• Neutralized bicarbonates without reliance on nitric acid (and risk of excess nitrogen)  

• Supplies readily available orthophosphate and chloride-free potassium  

• Provides greater nutritional flexibility, allowing calcium and magnesium applications alongside phosphorus to better meet crop demand  

• Acidifies the root zone, enhancing nutrient availability and uptake  

Nova PeKacid Compatibility notes: Avoid mixing with thiosulfate-based products or chelated micronutrients. 

Compatibility Is an Agronomic and an Economic Advantage

Compatibility isn’t just about avoiding problems—it’s a real agronomic benefit.

Well-formulated foliar and fertigation products designed for tank mix performance:

• Reduce the risk of precipitation and sedimentation
• Help prevent blockages in drip systems
• Improve spray solution stability
• Make combined passes safer and more predictable

This requires high quality, high purity ingredients, and often inputs with a lower pH.

Target the Root Zone – How Do Acidifying Fertilizers Improve Compatibility and Uptake?

Highly soluble, acidifying formulations like Nova PeKacid® (available in WSF and Liquid form) are engineered to dissolve completely and perform reliably even under challenging water conditions. By acidifying the soil solution in the rhizosphere or root zone, we can increase nutrient uptake where it’s needed most. Their dual-purpose function (nutrient supply and pH management) also keeps irrigation pipes and drippers clean too.

Don’t forget! Always perform a jar test before large-scale mixing. A small investment in verification can prevent significant loss in the field.

Finding Solutions to Work in the Tank and in the Field 

When nutrition and crop protection products are working together — growers can reduce risk, protect efficacy, and make every pass count. In today’s production systems, compatibility isn’t convenience…it’s strategy.

Contact your local ICL expert to learn more about how our products can optimize your crop protection strategy.