YaraTera Krista K Plus 25kg: Water Soluble Potassium Nitrate Fertiliser (N 13.7%, K 38.4%)

YaraTera Krista K Plus: A Water Soluble Potassium Nitrate Fertiliser

YaraTera Krista K Plus is a fully water soluble potassium nitrate fertiliser (also called nitrate of potash) that supplies plants with fast-acting nitrate nitrogen and chloride-free potassium. It contains 13.7% nitrogen, all in the nitrate form, and 38.4% potassium (about 46% K₂O), giving a 1:3 N:K ratio that suits flowering and fruit development. Made by Yara, it's a fine crystalline powder that dissolves completely for fertigation, hydroponics and foliar feeding. Available in 1kg, 2kg, 4kg and 25kg.

What Is Potassium Nitrate Fertiliser Used For?

Potassium nitrate is used to supply high potassium with readily available nitrogen, especially from flowering through to harvest. It's commonly used for:

• Fertigation through drip, low-throw sprinklers, centre pivots and spray systems
• Hydroponic and greenhouse nutrient solutions
• Foliar feeding during flowering and fruit fill
• Custom blends with other water-soluble fertilisers

Is Potassium Nitrate Good for Plants?

Yes. Potassium supports fruit size, shape and colour, sugar content, water-use efficiency and stronger cell walls, which helps plants cope with heat, frost and disease pressure. The nitrate nitrogen is immediately available, and it also helps plants take up other cations such as calcium and magnesium.

Which Plants Need Potassium Nitrate?

• Fruiting vegetables: tomatoes, capsicums, cucumbers, melons and strawberries
• Fruit trees and vines: citrus, stone fruit, avocados, grapes and berries
• Flowering ornamentals and cut flowers
• Hydroponic and greenhouse crops
• Chloride-sensitive crops: avocados, berries, stone fruit and other crops that react badly to muriate of potash

Is Potassium Nitrate Water Soluble?

Yes. Krista K Plus is a fine crystalline powder that dissolves fully in water and leaves no residue, so it won't block drippers or filters. It has a low salt index, which helps limit salt build-up in hydroponic, recirculating and greenhouse systems. It's free of chloride and sodium, making it suitable for sensitive and high-value crops.

How to Use Krista K Plus

• Dissolve fully in water before injecting into your fertigation system or mixing a foliar spray.
• Use it mainly from flowering through fruit development, when potassium demand is highest.
• Match rates to your crop, growth stage and soil or tissue test. Commercial rates vary widely by crop.
• It mixes with most water-soluble fertilisers, including calcium nitrate. Don't combine calcium fertilisers with sulphate or phosphate fertilisers in the same stock tank, as they form precipitates.
• Always jar test before tank mixing with pesticides or other products.

Storage and Safety: A Class 5.1 Oxidiser

Potassium nitrate is classed as a Dangerous Good, Class 5.1 oxidising substance (UN1486). It isn't flammable itself, but it can intensify a fire if it mixes with combustible materials.

• Store in a cool, dry, well-ventilated area in the original sealed bag.
• Keep away from fuels, oils, timber, sawdust, paper, organic materials and other combustibles.
• Keep away from heat, sparks and open flames.
• Clean up spills promptly and don't let it mix with organic matter.
• Wear gloves and eye protection when handling.

Key Features and Benefits

• Potassium nitrate (nitrate of potash): N 13.7%, K 38.4% (about 46% K₂O)
• All nitrogen in the fast-acting nitrate form
• Low 1:3 N:K ratio for flowering and fruit development
• Fully water soluble fine crystals, no residue
• Chloride-free and sodium-free for sensitive crops
• Low salt index for hydroponics and greenhouses
• Compatible with drip, sprinkler, pivot and spray fertigation
• Made by Yara, available in 1kg, 2kg, 4kg and 25kg

Product Details

• Brand: Yara
• Product: YaraTera Krista K Plus
• Chemical name: Potassium nitrate (KNO₃)
• Analysis: N 13.7% (nitrate), K 38.4% (about 46% K₂O)
• Form: Fine crystalline powder, fully water soluble
• Chloride and sodium: Free
• Dangerous Goods: Class 5.1 oxidising substance, UN1486
• Sizes: 1kg, 2kg, 4kg, 25kg

Frequently Asked Questions

What is YaraTera Krista K Plus?

It's a fully water-soluble potassium nitrate fertiliser from Yara, with 13.7% nitrate nitrogen and 38.4% potassium, used for fertigation, hydroponics and foliar feeding.

What is the NPK of YaraTera Krista K Plus?

It's N 13.7% and K 38.4% (about 46% K₂O), with no phosphorus. That's a 1:3 N:K ratio for flowering and fruiting.

What is potassium nitrate fertilizer used for?

It supplies high potassium with fast-acting nitrate nitrogen, mainly through fertigation, hydroponics and foliar sprays during flowering and fruit development.

Is potassium nitrate good for plants?

Yes. It improves fruit size, colour and sugar content, supports water-use efficiency and helps plants handle stress, without adding chloride or sodium.

Which plants need potassium nitrate?

Fruiting vegetables, fruit trees, vines, berries, flowering ornamentals and hydroponic crops, especially chloride-sensitive crops like avocados and berries.

Is potassium nitrate water soluble?

Yes. Krista K Plus dissolves completely in water and leaves no residue, making it suitable for drip and hydroponic systems.

Can I mix potassium nitrate with calcium nitrate?

Yes, they're compatible and often mixed in the same stock tank. Keep calcium fertilisers separate from sulphate and phosphate fertilisers.

Where can I buy YaraTera Krista K Plus in Australia?

YaraTera Krista K Plus is available in 1kg to 25kg from Bonnyrigg Produce & Garden Supplies at 462 Elizabeth Dr, Bonnyrigg NSW 2177, Australia. You can visit our store or order online with delivery across Australia.